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• Is there a Distributed SAN/Storage System out there?

  - by Joel Coel

  Like many other places, we ask our users not to save files to their local machines. Instead, we encourage that they be put on a file server so that others (with appropriate permissions) can use them and that the files are backed up properly. The result of this is that most users have large hard drives that are sitting mainly empty. It's 2010 now. Surely there is a system out there that lets you turn that empty space into a virtual SAN or document library? What I envision is a client program that is pushed out to users' PCs that coordinates with a central server. The server looks to users just like a normal file server, but instead of keeping entire file contents it merely keeps a record of where those files can be found among various user PCs. It then coordinates with the right clients to serve up file requests. The client software would be able to respond to such requests directly, as well as be smart enough to cache recent files locally. For redundancy the server could make sure files are copied to multiple PCs, perhaps allowing you to define groups in different locations so that an instance of the entire repository lives in each group to protect against a disaster in one building taking down everything else. Obviously you wouldn't point your database server here, but for simpler things I see several advantages: Files can often be transferred from a nearer machine. Disk space grows automatically as your company does. Should ultimately be cheaper, as you don't need to keep a separate set of disks I can see a few downsides as well: Occasional degradation of user pc performance, if the machine has to serve or accept a large file transfer during a busy period. Writes have to be propogated around the network several times (though I suspect this isn't really much of a problem, as reading happens in most places more than writing) Still need a way to send a complete copy of the data offsite occasionally, and this would make it very hard to do differentials Think of this like a cloud storage system that lives entirely within your corporate LAN and makes use of your existing user equipment. Our old main file server is due for retirement in about 2 years, and I'm looking into replacing it with a small SAN. I'm thinking something like this would be a better fit. As a school, we have a couple computer labs I can leave running that would be perfect for adding a little extra redundancy to the system. Unfortunately, the closest thing I can find is Dienst, and it's just a paper that dates back to 1994. Am I just using the wrong buzzwords in my searches, or does this really not exist? If not, is there a big downside that I'm missing?

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• PHP 5.2 to 5.3 not upgrading, no errors

  - by Webnet

  I'm following this guide: http://atik97.wordpress.com/2010/06/12/how-to-upgrade-to-php-5-3-in-ubuntu-9-10/ I've done all the steps, but it's still showing php 5.2.6 - any ideas? I have also tried -cgi instead of -cli, neither have any effect. update I've tried rebooting the server to see if that would have any effect and unfortunately it didn't update Output of dpkg -l *php*: Desired=Unknown/Install/Remove/Purge/Hold | Status=Not/Inst/Cfg-files/Unpacked/Failed-cfg/Half-inst/trig-aWait/Trig-pend |/ Err?=(none)/Hold/Reinst-required/X=both-problems (Status,Err: uppercase=bad) ||/ Name Version Description +++-=============================================-=============================================-========================================================================================================== un libapache2-mod-php4 <none> (no description available) ii libapache2-mod-php5 5.2.6.dfsg.1-3ubuntu4.6 server-side, HTML-embedded scripting language (Apache 2 module) un libapache2-mod-php5filter <none> (no description available) ii php-pear 5.2.6.dfsg.1-3ubuntu4.6 PEAR - PHP Extension and Application Repository un php4-cli <none> (no description available) un php4-dev <none> (no description available) un php4-mysql <none> (no description available) un php4-pear <none> (no description available) ii php5 5.2.6.dfsg.1-3ubuntu4.6 server-side, HTML-embedded scripting language (metapackage) ii php5-cgi 5.2.6.dfsg.1-3ubuntu4.6 server-side, HTML-embedded scripting language (CGI binary) ii php5-cli 5.2.6.dfsg.1-3ubuntu4.6 command-line interpreter for the php5 scripting language ii php5-common 5.2.6.dfsg.1-3ubuntu4.6 Common files for packages built from the php5 source ii php5-curl 5.2.6.dfsg.1-3ubuntu4.6 CURL module for php5 un php5-dev <none> (no description available) ii php5-gd 5.2.6.dfsg.1-3ubuntu4.6 GD module for php5 ii php5-imap 5.2.6-0ubuntu5.1 IMAP module for php5 un php5-json <none> (no description available) ii php5-mcrypt 5.2.6-0ubuntu2 MCrypt module for php5 ii php5-mysql 5.2.6.dfsg.1-3ubuntu4.6 MySQL module for php5 un php5-mysqli <none> (no description available) ii php5-xsl 5.2.6.dfsg.1-3ubuntu4.6 XSL module for php5 un phpapi-20060613+lfs <none> (no description available) ii phpmyadmin 4:3.1.2-1ubuntu0.2 MySQL web administration tool update The following commands and their outputs: grep php53 /etc/apt/sources.list deb http://php53.dotdeb.org stable all deb-src http://php53.dotdeb.org stable all apt-cache search -f "libapache2-mod-php5" http://pastebin.com/XNXdsXYC update I've updated the question with more details on installed packages.

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• Varnish server in front of nginx server with multiple virtualhosts

  - by Garreth 00

  I have tried to search for a solution for this, but can't find any documentation/tips on my specific setup. My setup: Backendserver: ngnix: 2 different websites (2 top domains) in virtualenv, running gunicorn/python/django Backendserver hardware(VPS) 2gb ram, 8 CPU Databaseserver: postgresql - pg_bouncer Backendserver hardware (VPS) 1gb ram, 8 CPU Varnishserver: only running varnish Varnishserver hardware (VPS) 1gb ram, 8 CPU I'm trying to set up a varnish server to handle rare spike in traffic (20 000 unique req/s) The spike happens when a tv program mention one of the sites. What do I need to do, to make the varnish server cache both sites/domains on my backendserver? My /etc/varnish/default.vcl : backend django_backend { .host = "local.backendserver.com"; .port = "8080"; } My /usr/local/nginx/site-avaible/domain1.com upstream gunicorn_domain1 { server unix:/home/<USER>/.virtualenvs/<DOMAIN1>/<APP1>/run/gunicorn.sock fail_timeout=0; } server { listen 80; listen 8080; server_name domain1.com; rewrite ^ http://www.domains.com$request_uri? permanent; } server { listen 80 default_server; listen 8080; client_max_body_size 4G; server_name www.domain1.com; keepalive_timeout 5; # path for static files root /home/<USER>/<APP>-media/; location / { proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; proxy_set_header Host $http_host; proxy_redirect off; if (!-f $request_filename) { proxy_pass http://gunicorn_domain1; break; } } } My /usr/local/nginx/site-avaible/domain2.com upstream gunicorn_domain2 { server unix:/home/<USER>/.virtualenvs/<DOMAIN2>/<APP2>/run/gunicorn.sock fail_timeout=0; } server { listen 80; listen 8080; server_name domain2.com; rewrite ^ http://www.domains.com$request_uri? permanent; } server { listen 80; listen 8080; client_max_body_size 4G; server_name www.domain2.com; keepalive_timeout 5; # path for static files root /home/<USER>/<APP>-media/; location / { proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; proxy_set_header Host $http_host; proxy_redirect off; if (!-f $request_filename) { proxy_pass http://gunicorn_domain2; break; } } } Right now, If I try the Ip of the varnishserver I only get served domain1.com. Would everything be correct if I change the DNS of the two domain to point to the varnishserver, or is there extra setup before it would work? Question 2: Do I need a dedicated server for varnish, or could I just install varnish on my backendserver, or would the server run out of memory quick?

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• What are the most likely bottlenecks determining the performance of CamStudio screen recording?

  - by Steve314

  When doing screen recording, I can get a frame rate of maybe 15 frames per second for the full screen on my 1080p monitor using the XVID codec. I can increase the speed a bit by recording a region, changing screen modes, and tweaking other settings, but I'm curious what hardware upgrades might give me the biggest bang for my buck. My PC is budget, but modern... Athlon 2 X4 645 (3.1GHz, quad core, limited cache) processor. 4GB single channel DDR3 1066 RAM. ASRock motherboard with NVidia GeForce 7025/nForce 630a Chipset. ATI Radeon HD 5450 graphics card - 512MB on board, not configured to steal system RAM. I dual-boot Windows XP and Windows 7. For the moment, XP is my bigger performance concern as it's still my getting-things-done O/S as opposed to my browser-host O/S. My goal is to make a few programming-related tutorials. For a lot of that I don't need screen recording - I can make up some slides, record audio with the PC switched off, yada yada. When I do need screen recording, I'll mostly be recording Notepad++, Visual Studio or a command prompt. Occasionally, I may be recording some kind of graphics or diagram program and using my pre-Bamboo cheap Wacom tablet - I have the CS2 versions of Photoshop and Illustrator, but I'd much more likely be using Microsoft Paint. Basically, what I'll be recording won't be making huge demands on the machine - but recording a fair number of pixels (720p preferred) will be useful. What's particularly wierd - not so long ago I still had a five-year-old Pentium 4 based PC. And (with the same 1080p monitor) it could record at not far from the same frame rate. So clearly the performance issues are more subtle than just throw-money-at-it. My first guess would be that the main bottleneck is the bandwidth for transferring data to/from the graphics card. Is that likely to be correct? In support of that, see this [Radeon HD 5450 review][1] - the memory bandwidth is only 12.8 GB/s. If you can't get data out of graphics memory quickly, you can't transfer it back to the system memory quickly. Apparently, that's slower than some top-end cards in 2002.

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• Exchange IMAP4 connector - Error Event ID 2006

  - by MikeB

  A couple of users in my organisation use IMAP4 to connect to Exchange 2007 (Update rollup 9 applied) because they prefer Thunderbird / Postbox clients. One of the users is generating errors in the Application Log as follows: An exception Microsoft.Exchange.Data.Storage.ConversionFailedException occurred while converting message Imap4Message 1523, user "*******", folder *********, subject: "******", date: "*******" into MIME format. Microsoft.Exchange.Data.Storage.ConversionFailedException: Message content has become corrupted. ---> System.ArgumentException: Value should be a valid content type in the form 'token/token' Parameter name: value at Microsoft.Exchange.Data.Mime.ContentTypeHeader.set_Value(String value) at Microsoft.Exchange.Data.Storage.MimeStreamWriter.WriteHeader(HeaderId type, String data) at Microsoft.Exchange.Data.Storage.ItemToMimeConverter.WriteMimeStreamAttachment(StreamAttachmentBase attachment, MimeFlags flags) --- End of inner exception stack trace --- at Microsoft.Exchange.Data.Storage.ItemToMimeConverter.WriteMimeStreamAttachment(StreamAttachmentBase attachment, MimeFlags flags) at Microsoft.Exchange.Data.Storage.ItemToMimeConverter.WriteMimeAttachment(MimePartInfo part, MimeFlags flags) at Microsoft.Exchange.Data.Storage.ItemToMimeConverter.WriteMimePart(MimePartInfo part, MimeFlags mimeFlags) at Microsoft.Exchange.Data.Storage.ItemToMimeConverter.WriteMimeParts(List`1 parts, MimeFlags mimeFlags) at Microsoft.Exchange.Data.Storage.ItemToMimeConverter.WriteMimePart(MimePartInfo part, MimeFlags mimeFlags) at Microsoft.Exchange.Data.Storage.ImapItemConverter.<>c__DisplayClass2.<WriteMimePart>b__0() at Microsoft.Exchange.Data.Storage.ConvertUtils.CallCts(Trace tracer, String methodName, String exceptionString, CtsCall ctsCall) at Microsoft.Exchange.Data.Storage.ImapItemConverter.WriteMimePart(ItemToMimeConverter converter, MimeStreamWriter writer, OutboundConversionOptions options, MimePartInfo partInfo, MimeFlags conversionFlags) at Microsoft.Exchange.Data.Storage.ImapItemConverter.GetBody(Stream outStream) at Microsoft.Exchange.Data.Storage.ImapItemConverter.GetBody(Stream outStream, UInt32[] indices) From my reading around it seems that the suggestion is to ask users to log in to Outlook / OWA and view the messages there. However, having logged in as the users myself, the messages cannot be found either through searching or by browsing the folder detailed in the log entry. The server returns the following error to the client: "The message could not be retrieved using the IMAP4 protocol. The message has not been deleted and may be accessible using either Microsoft Outlook or Microsoft Office Outlook Web Access. You can also try contacting the original sender of the message to find out about the contents of the message. Retrieval of this message will be retried when the server is updated with a fix that addresses the problem." Messages were transferred in to Exchange by copying them from the old Apple Xserve, accessed using IMAP. So my question, finally: 1. Is there any way to get the IMAP Exchange connector to rebuild its cache of messages since it doesn't seem to be pulling them directly from the MAPI store? 2. Alternatively, if there is no database, any ideas on why these messages don't appear in Outlook or OWA would be gratefully received. Many thanks, Mike

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• Repeated requests on our server?

  - by pitty.platsch

  I encountered something strange in the access log of our Apache server which I cannot explain. Requests for webpages that I or my colleagues do from the office's Windows network get repeated by another IP (that we don't know) a couple of seconds later. The user agent repeating our requests is Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0; .NET CLR 2.0.50727; .NET CLR 3.0.04506.648; .NET CLR 3.5.21022; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729; InfoPath.2) Has anyone an idea? Update: I've got some more information now. The referrer of the replicate is set to the URL I requested before and it's not the exact same request as the protocol version is changed from 'HTTP/1.1' to 'HTTP/1.0'. The IP is not just one, it's just one of a subnet (80.40.134.*). It's just the first request to a resource that's get repeated, so it seems the "spy" is building up some kind of cache of visited places. The repeater is also picky. I tried randomly URLs with different HTTP status codes and different file patterns. 301s and 200s are redone, 404s not. Image extensions seem to be ignored. While doing my tests I discovered that this behavior seems to be common as I found other clients visiting just after the first requests: 66.249.73.184 - - [25/Oct/2012:10:51:33 +0100] "GET /foobar/ HTTP/1.1" 200 10952 "-" "Mediapartners-Google" 50.17.125.180 - - [25/Oct/2012:10:51:33 +0100] "GET /foobar/ HTTP/1.1" 200 41312 "-" "Mozilla/5.0 (compatible; proximic; +http://www.proximic.com/info/spider.php)" I wasn't aware about this practice, so I don't see it that much as a threat anymore. I still want to find out who this is, so any further help is appreciated. I'll try later if this also happens if I query some other server where I have access to the access logs and will update here then.

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• SQLS Timeouts - High Reads in Profiler

  - by lb01

  I've audited a SQLS2008 server with Profiler for one day.. the overhead didn't seem to trouble this new client my company has. They are using a legacy VB6 application as a front-end. They're experiencing timeouts once SQLS RAM usage is high. The server is currently running x64 sqls2008 on a VM with nearly 9 GB of RAM. SQL Server's 'max server memory option' is currently set to 6GB. I've put the results of the trace in a table and queried them using this query. SELECT TextData, ApplicationName, Reads FROM [TraceWednesday] WHERE textdata is not null and EventClass = 12 GROUP BY TextData, ApplicationName, Reads ORDER BY Reads DESC As I expected, some values are very high. Top Reads, in pages. 2504188 1965910 1445636 1252433 1239108 1210153 1088580 1072725 Am I correct in thinking that the top one (2504188 pages) is 20033504 KB, which then is roughly ~20'000 MB, 20GB? These queries are often executed and can take quite some time to run. Eventually RAM is used up because of the cache fattening, and timeouts occur once SQL cannot 'splash' pages in the buffer pool as much. Costs go up. Am I correct in my understanding? I've read that I should tune the associated T-SQL and create appropriate indices. Obviously cutting down the I/O would make SQL Server use less RAM. OR, maybe it might just slow down the process of chewing up the whole RAM. If a lot less pages are read, maybe it'll all run much better even when usage is high? (less time swapping, etc.) Currently, our only option is to restart SQL once a week when RAM usage is high, suddenly the timeouts disappear. SQL breathes again. I'm sure lots of DBAs have been in this situation.. I'm asking before I start digging out all of the bad T-SQL and put indices here and there, is there is something else I can do? Any advice except from what I know (not much yet..) Much appreciated. Leo.

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• On ESXi, guest machines hang for significant intervals compared to real machines. How can I fix this?

  - by Tarbox

  This is ESXi version 5.0.0. We plan on upgrading to 5.5 eventually. I have four code profiles, two taken on a real, unvirtualized machine, two taken on a virtual machine. Ordering the list of subroutines by time spent in each one, the two real profiles are practically identical. The two virtual profiles are different from each other and from the real profiles: a subset of subroutines are taking a lot more time on the virtual machines, and the subset is different for each run. The two virtual profiles take a similar amount of time, which is 3 times the amount of time the real profiles take. This gross "how long does it take?" result is consistent after hundreds of tests across three different virtual machines on two different host machines -- the virtual machine is just slower. I've only the code profiling on the four, however. Here's the most guilty set of lines: This is the real machine: 8µs $text = '' unless defined $text; 1.48ms foreach ( split( "\n", $text ) ) { This is the first run on the virtual machine: 20.1ms $text = '' unless defined $text; 1.49ms foreach ( split( "\n", $text ) ) { This is the second run on the virtual machine: 6µs $text = '' unless defined $text; 21.9ms foreach ( split( "\n", $text ) ) { My WAG is that the VM is swapping out the thread and then swapping it back in, destroying some level of cache in the process, but these code profiles were taken when the vm in question was the only active vm on the host, so... what? What does that mean? The guest itself is under light load, this is a latency problem for my users rather than throughput. The host is also under a light load, if I knew what resources to assign where, I could do it without worrying about the cost. I've attempted to lock memory, reserve cpu, assign a restrictive affinity, and disable hyperthread sharing. They don't help, it still takes the VM 2-4x the amount of time to do the same thing as the real machine. The host the tests were run on is 6x2.50GHz, Intel Xeon E5-26400 w/ 16gigs of ram. The guest exhibits the same performance under a wide combination of settings. The real machine is 4x2.13GHz, Xeon E5506 w/ 2 gigs of ram. Thank you for all advice.

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• What DNS server to use for dynamic load-balancing of website?

  - by Marki555

  I will have 2 servers in different datacenters (different countries) and I want to use DNS load-balancing mainly for High Availability of website hosted on those 2 servers. It is just ad tracking site, which records hit in local database and returns few lines on html code. I want to return 2 A records each time because of DNS pinning in browsers (if one server fails, browser will try second A record which it has already cached). Both servers will be acting also as DNS servers for redundancy. Now comes my proposed solution: I will use BIND and have both servers as a master for that zone. On each server there will be running script, which will periodically test availability (http) of both servers and remove IP from DNS in case of failure. Now the questions :) 1) Is BIND suitable for this solution? I think BIND performance is good and it is easy to manipulate the zone file via script. And as I will modify the zone only in case of failure/maintenance, the modifications (and thus bind reload) won't be often. 2) I plan to use TTL of 5 minutes. The website will have about 1000-3000 req/s but from distinct clients (each IP only 1-3 requests), so I think the DNS load won't be too much. I suppose their ISPs will cache the responses for those 5 mins. Is there any reason to lower the TTL even more? 3) Is my master-master approach good? Or should I make one of the servers master and the other one slave? Right now each server can monitor both itself and the other one. If only webservice fails, both DNS nodes will notice it. If the whole server fails, then the remaining DNS node will notice it and the failed node will not answer DNS queries anyway. 4) Is it a big issue when one NS server does not respond to queries? If yes, I can make a third DNS, so anytime at least 2 of them would accept queries... 5) Should I rewrite the zone file via script, or just use dynamic DNS update (for example via nsupdateutility)?

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• Nginx SSL redirect for one specific page only

  - by jjiceman

  I read and followed this question in order to configure nginx to force SSL for one page (admin.php for XenForo), and it is working well for a few of the site administrators but is not for myself. I was wondering if anyone has any advice on how to improve this configuration: ... ssl_certificate example.net.crt; ssl_certificate_key example.key; server { listen 80 default; listen 443 ssl; server_name www.example.net example.net; access_log /srv/www/example.net/logs/access.log; error_log /srv/www/example.net/logs/error.log; root /srv/www/example.net/public_html; index index.php index.html; location / { if ( $scheme = https ){ rewrite ^ http://example.net$request_uri? permanent; } try_files $uri $uri/ /index.php?$uri&$args; index index.php index.html; } location ^~ /admin.php { if ( $scheme = http ) { rewrite ^ https://example.net$request_uri? permanent; } try_files $uri /index.php; include fastcgi_params; fastcgi_pass 127.0.0.1:9000; fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name; fastcgi_param HTTPS on; } location ~ \.php$ { try_files $uri /index.php; include fastcgi_params; fastcgi_pass 127.0.0.1:9000; fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name; fastcgi_param HTTPS off; } } ... It seems that the extra information in the location ^~ /admin.php block is unecessary, does anyone know of an easy way to avoid duplicate code? Without it it skips the php block and just returns the php files. Currently it applies https correctly in Firefox when I navigate to admin.php. In Chrome, it downloads the admin.php page. When returning to the non-https website in Firefox, it does not correctly return to http but stays as SSL. Like I said earlier, this only happens for me, the other admins can go back and forth without a problem. Is this an issue on my end that I can fix? And does anyone know of any ways I could reduce duplicate configuration options in the configuration? Thanks in advance! EDIT: Clearing the cache / cookies seemed to work. Is this the right way to do http/https redirection? I sort of made it up as I went along.

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• Why is my concurrency capacity so low for my web app on a LAMP EC2 instance?

  - by AMF

  I come from a web developer background and have been humming along building my PHP app, using the CakePHP framework. The problem arose when I began the ab (Apache Bench) testing on the Amazon EC2 instance in which the app resides. I'm getting pretty horrendous average page load times, even though I'm running a c1.medium instance (2 cores, 2GB RAM), and I think I'm doing everything right. I would run: ab -n 200 -c 20 http://localhost/heavy-but-view-cached-page.php Here are the results: Concurrency Level: 20 Time taken for tests: 48.197 seconds Complete requests: 200 Failed requests: 0 Write errors: 0 Total transferred: 392111200 bytes HTML transferred: 392047600 bytes Requests per second: 4.15 [#/sec] (mean) Time per request: 4819.723 [ms] (mean) Time per request: 240.986 [ms] (mean, across all concurrent requests) Transfer rate: 7944.88 [Kbytes/sec] received While the ab test is running, I run VMStat, which shows that Swap stays at 0, CPU is constantly at 80-100% (although I'm not sure I can trust this on a VM), RAM utilization ramps up to about 1.6G (leaving 400M free). Load goes up to about 8 and site slows to a crawl. Here's what I think I'm doing right on the code side: In Chrome browser uncached pages typically load in 800-1000ms, and cached pages load in 300-500ms. Not stunning, but not terrible either. Thanks to view caching, there might be at most one DB query per page-load to write session data. So we can rule out a DB bottleneck. I have APC on. I am using Memcached to serve the view cache and other site caches. xhprof code profiler shows that cached pages take up 10MB-40MB in memory and 100ms - 1000ms in wall time. Pages that would be the worst offenders would look something like this in xhprof: Total Incl. Wall Time (microsec): 330,143 microsecs Total Incl. CPU (microsecs): 320,019 microsecs Total Incl. MemUse (bytes): 36,786,192 bytes Total Incl. PeakMemUse (bytes): 46,667,008 bytes Number of Function Calls: 5,195 My Apache config: KeepAlive On MaxKeepAliveRequests 100 KeepAliveTimeout 3 <IfModule mpm_prefork_module> StartServers 5 MinSpareServers 5 MaxSpareServers 10 MaxClients 120 MaxRequestsPerChild 1000 </IfModule> Is there something wrong with the server? Some gotcha with the EC2? Or is it my code? Some obvious setting I should look into? Too many DNS lookups? What am I missing? I really want to get to 1,000 concurrency capacity, but at this rate, it ain't gonna happen.

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• SQLS Timeouts - High Reads in Profiler

  - by lb01

  Hi I've audited a SQLS2008 server with Profiler for one day.. the overhead didn't seem to trouble this new client my company has. They are using a legacy VB6 application as a front-end. They're experiencing timeouts once SQLS RAM usage is high. The server is currently running x64 sqls2008 on a VM with nearly 9 GB of RAM. SQL Server's 'max server memory option' is currently set to 6GB. I've put the results of the trace in a table and queried them using this query. SELECT TextData, ApplicationName, Reads FROM [TraceWednesday] WHERE textdata is not null and EventClass = 12 GROUP BY TextData, ApplicationName, Reads ORDER BY Reads DESC As I expected, some values are very high. Top Reads, in pages. 2504188 1965910 1445636 1252433 1239108 1210153 1088580 1072725 Am I correct in thinking that the top one (2504188 pages) is 20033504 KB, which then is roughly ~20'000 MB, 20GB? These queries are often executed and can take quite some time to run. Eventually RAM is used up because of the cache fattening, and timeouts occur once SQL cannot 'splash' pages in the buffer pool as much. Costs go up. Am I correct in my understanding? I've read that I should tune the associated T-SQL and create appropriate indices. Obviously cutting down the I/O would make SQL Server use less RAM. OR, maybe it might just slow down the process of chewing up the whole RAM. If a lot less pages are read, maybe it'll all run much better even when usage is high? (less time swapping, etc.) Currently, our only option is to restart SQL once a week when RAM usage is high, suddenly the timeouts disappear. SQL breathes again. I'm sure lots of DBAs have been in this situation.. I'm asking before I start digging out all of the bad T-SQL and put indices here and there, is there is something else I can do? Any advice except from what I know (not much yet..) Much appreciated. Leo.

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• Why is Linux choosing the wrong source ip address

  - by Scheintod

  and what to do to let it choose the right one? This all happens inside an OpenVZ container: The Host is Debian/Wheezy with Redhat/OpenVZ Kernel: root@mycl2:~# uname -a Linux mycl2 2.6.32-openvz-042stab081.5-amd64 #1 SMP Mon Sep 30 16:40:27 MSK 2013 x86_64 GNU/Linux The container has two (virtual) network interfaces. One in public and one in private address-space: root@mycl2:~# ifconfig lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B) venet0 Link encap:UNSPEC HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 inet addr:127.0.0.2 P-t-P:127.0.0.2 Bcast:0.0.0.0 Mask:255.255.255.255 UP BROADCAST POINTOPOINT RUNNING NOARP MTU:1500 Metric:1 RX packets:475 errors:0 dropped:0 overruns:0 frame:0 TX packets:775 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:32059 (31.3 KiB) TX bytes:56309 (54.9 KiB) venet0:0 Link encap:UNSPEC HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 inet addr:80.123.123.29 P-t-P:80.123.123.29 Bcast:80.123.123.29 Mask:255.255.255.255 UP BROADCAST POINTOPOINT RUNNING NOARP MTU:1500 Metric:1 venet0:1 Link encap:UNSPEC HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 inet addr:10.0.1.29 P-t-P:10.0.1.29 Bcast:10.0.1.29 Mask:255.255.255.255 UP BROADCAST POINTOPOINT RUNNING NOARP MTU:1500 Metric:1 The route to the private network is set manually: root@mycl2:~# route -n Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 10.0.0.0 0.0.0.0 255.0.0.0 U 0 0 0 venet0 0.0.0.0 0.0.0.0 0.0.0.0 U 0 0 0 venet0 Tring to ping others on the private network leads to the wrong source address been choosen: root@mycl2:~# ip route get 10.0.1.26 10.0.1.26 dev venet0 src 80.123.123.29 cache mtu 1500 advmss 1460 hoplimit 64 Why is this and what can I do about it? EDIT: If I create the route with (thanks to Joshua) ip route add 10.0.0.0/8 dev venet0 src 10.0.1.29 it is working. But according to man ip-route the src parameter should only set the source-ip if this route is chosen. But if this route is chosen then the source-ip would be that anyway.

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• Why Photoshop CS5's photomerge's result immediately disappear?

  - by koiyu

  I have a bunch of JPG-files which I want to stitch together with Photoshop's Photomerge function. I choose File → Automate → Photomerge... and browse for the files. Photoshop opens the files and starts analyzing. I see the process bar filling and different phases are mentioned on the process bar. Nothing weird there. When the merging is done (and if I don't blink my eyes), I can see layers-palette is populated with the chosen files and, by quickly judging from the layer thumbnails, they're properly aligned. Sometimes the image window itself can be seen, but not always. Problem is that the layers and the image disappear in a flash. There is no error message. Everything is like prior starting the photomerge. No file has been changed. I could continue to use Photoshop normally. This is what I've tried so far: Loaded folder which has 38 JPG images, 4272 x 2848 and ˜ 5 megabytes per file Loaded the same files, but chose Use Files instead of Use Folder in the photomerge's window Loaded 19 JPG images, 4272 x 2848 and ˜ 5 megabytes per file Loaded 10 JPG images, ⇑ see above Loaded 5 JPG images, see above Loaded 3 JPG images, see above Scaled the images to 2256 x 1504 and ˜< 1 megabytes per file Loaded in a set of 38, 19, 10, 5, 3 Following steps are tested with these smaller files and with a set of 5 images Read Adobe's forums and reduced the amount of RAM Photoshop uses gradually from ˜ 80 % to 50 % (though I didn't understand the logic behind this) Would've reduced cache tile size to 128K, but it was set so already Disabled OpenGL Scaled the images to 800 x 533 and ˜ 100 kilobytes per file, loaded a set of 5 Read more unanswered threads around the internet In between each test I closed and reopened Photoshop. This is the first time I've even tried using photomerge. Am I doing something wrong? How can I locate what is the problem? How do I fix this? Photoshop is 64 bit Extended CS5 version. I'm on a mid-2010 quad-core (i5) iMac with up-to-date Mac OS X 10.6.6. Edit: Weird. First loading the images into one file via File → Scripts → Load Files into Stack… and then using Edit → Auto-Align Layers…, which, effectively, is the same as photomerge (even the dialog looks kind of the same), works! Even with the original JPGs without any issues. This doesn't fix photomerge, though.

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• Nginx config - serving index.html not working

  - by Bill

  I can't figure out how to redirect / to index.html. I've gone through the threads on serverfault and I think I've tried every suggestion including: rewrite statements within location / index index.html at the server level, within location / and within static content moving node.js proxy statements to location ~ /i instead of within location / Obviously something is wrong somewhere else in my configuration. Here is my nginx.conf: worker_processes 1; pid /home/logs/nginx.pid; events { worker_connections 1024; } http { include mime.types; default_type application/octet-stream; sendfile on; keepalive_timeout 65; error_log /home/logs/error.log; access_log /home/logs/access.log combined; include sites-enabled/*; } and my server config located in sites-enabled server { root /home/www/public; listen 80; server_name localhost; # proxy request to node location / { index index.html index.htm; proxy_set_header Host $http_host; proxy_set_header X-Real-IP $remote_addr; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; proxy_set_header X-NginX-Proxy true; proxy_pass http://127.0.0.1:3010; proxy_redirect off; break; } # static content location ~ \.(?:ico|jpe?g|jpeg|gif|css|png|js|swf|xml|woff|eot|svg|ttf|html)$ { access_log off; add_header Pragma public; add_header Cache-Control public; expires 30d; } gzip on; gzip_vary on; gzip_http_version 1.0; gzip_comp_level 2; gzip_proxied any; gzip_min_length 1000; gzip_disable "msie6"; gzip_types text/plain text/css application/json application/x-javascript text/xml application/xml application/xml+rss text/javascript; } Everything else is working just fine. Requests get proxied to node correctly and static content is served correctly. I just need to be able to forward requests made to / to /index.html.

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• mysql not starting

  - by Eiriks

  I have a server running on rackspace.com, it been running for about a year (collecting data for a project) and no problems. Now it seems mysql froze (could not connect either through ssh command line, remote app (sequel pro) or web (pages using the db just froze). I got a bit eager to fix this quick and rebooted the virtual server, running ubuntu 10.10. It is a small virtual LAMP server (10gig storage - I'm only using 1, 256mb ram -has not been a problem). Now after the reboot, I cannot get mysql to start again. service mysql status mysql stop/waiting I believe this just means mysql is not running. How do I get this running again? service mysql start start: Job failed to start No. Just typing 'mysql' gives: mysql ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (111) There is a .sock file in this folder, 'ls -l' gives: srwxrwxrwx 1 mysql mysql 0 2012-12-01 17:20 mysqld.sock From googleing this for a while now, I see that many talk about the logfile and my.cnf. Logs Not sure witch ones I should look at. This log-file is empty: 'var/log/mysql/error.log', so is the 'var/log/mysql.err' and 'var/log/mysql.log'. my.cnf is located in '/etc/mysql' and looks like this. Can't see anything clearly wrong with it either. # # The MySQL database server configuration file. # # You can copy this to one of: # - "/etc/mysql/my.cnf" to set global options, # - "~/.my.cnf" to set user-specific options. # # One can use all long options that the program supports. # Run program with --help to get a list of available options and with # --print-defaults to see which it would actually understand and use. # # For explanations see # http://dev.mysql.com/doc/mysql/en/server-system-variables.html # This will be passed to all mysql clients # It has been reported that passwords should be enclosed with ticks/quotes # escpecially if they contain "#" chars... # Remember to edit /etc/mysql/debian.cnf when changing the socket location. [client] port = 3306 socket = /var/run/mysqld/mysqld.sock # Here is entries for some specific programs # The following values assume you have at least 32M ram # This was formally known as [safe_mysqld]. Both versions are currently parsed. [mysqld_safe] socket = /var/run/mysqld/mysqld.sock nice = 0 [mysqld] # # * Basic Settings # # # * IMPORTANT # If you make changes to these settings and your system uses apparmor, you may # also need to also adjust /etc/apparmor.d/usr.sbin.mysqld. # user = mysql socket = /var/run/mysqld/mysqld.sock port = 3306 basedir = /usr datadir = /var/lib/mysql tmpdir = /tmp skip-external-locking # # Instead of skip-networking the default is now to listen only on # localhost which is more compatible and is not less secure. bind-address = 127.0.0.1 # # * Fine Tuning # key_buffer = 16M max_allowed_packet = 16M thread_stack = 192K thread_cache_size = 8 # This replaces the startup script and checks MyISAM tables if needed # the first time they are touched myisam-recover = BACKUP #max_connections = 100 #table_cache = 64 #thread_concurrency = 10 # # * Query Cache Configuration # query_cache_limit = 1M query_cache_size = 16M # # * Logging and Replication # # Both location gets rotated by the cronjob. # Be aware that this log type is a performance killer. # As of 5.1 you can enable the log at runtime! #general_log_file = /var/log/mysql/mysql.log #general_log = 1 log_error = /var/log/mysql/error.log # Here you can see queries with especially long duration #log_slow_queries = /var/log/mysql/mysql-slow.log #long_query_time = 2 #log-queries-not-using-indexes # # The following can be used as easy to replay backup logs or for replication. # note: if you are setting up a replication slave, see README.Debian about # other settings you may need to change. #server-id = 1 #log_bin = /var/log/mysql/mysql-bin.log expire_logs_days = 10 max_binlog_size = 100M #binlog_do_db = include_database_name #binlog_ignore_db = include_database_name # # * InnoDB # # InnoDB is enabled by default with a 10MB datafile in /var/lib/mysql/. # Read the manual for more InnoDB related options. There are many! # # * Security Features # # Read the manual, too, if you want chroot! # chroot = /var/lib/mysql/ # # For generating SSL certificates I recommend the OpenSSL GUI "tinyca". # # ssl-ca=/etc/mysql/cacert.pem # ssl-cert=/etc/mysql/server-cert.pem # ssl-key=/etc/mysql/server-key.pem [mysqldump] quick quote-names max_allowed_packet = 16M [mysql] #no-auto-rehash # faster start of mysql but no tab completition [isamchk] key_buffer = 16M # # * IMPORTANT: Additional settings that can override those from this file! # The files must end with '.cnf', otherwise they'll be ignored. # !includedir /etc/mysql/conf.d/ I need the data in the database (so i'd like to avoid reinstalling), and I need it back up running again. All hint, tips and solutions are welcomed and appreciated.

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• WPF ListView as a DataGrid – Part 3

  - by psheriff

  I have had a lot of great feedback on the blog post about turning the ListView into a DataGrid by creating GridViewColumn objects on the fly. So, in the last 2 parts, I showed a couple of different methods for accomplishing this. Let’s now look at one more and that is use Reflection to extract the properties from a Product, Customer, or Employee object to create the columns. Yes, Reflection is a slower approach, but you could create the columns one time then cache the View object for re-use. Another potential drawback is you may have columns in your object that you do not wish to display on your ListView. But, just because so many people asked, here is how to accomplish this using Reflection.   Figure 1: Use Reflection to create GridViewColumns. Using Reflection to gather property names is actually quite simple. First you need to pass any type (Product, Customer, Employee, etc.) to a method like I did in my last two blog posts on this subject. Below is the method that I created in the WPFListViewCommon class that now uses reflection. C#public static GridView CreateGridViewColumns(Type anyType){  // Create the GridView  GridView gv = new GridView();  GridViewColumn gvc;   // Get the public properties.  PropertyInfo[] propInfo =          anyType.GetProperties(BindingFlags.Public |                                BindingFlags.Instance);   foreach (PropertyInfo item in propInfo)  {    gvc = new GridViewColumn();    gvc.DisplayMemberBinding = new Binding(item.Name);    gvc.Header = item.Name;    gvc.Width = Double.NaN;    gv.Columns.Add(gvc);  }   return gv;} VB.NETPublic Shared Function CreateGridViewColumns( _  ByVal anyType As Type) As GridView  ' Create the GridView   Dim gv As New GridView()  Dim gvc As GridViewColumn   ' Get the public properties.   Dim propInfo As PropertyInfo() = _    anyType.GetProperties(BindingFlags.Public Or _                          BindingFlags.Instance)   For Each item As PropertyInfo In propInfo    gvc = New GridViewColumn()    gvc.DisplayMemberBinding = New Binding(item.Name)    gvc.Header = item.Name    gvc.Width = [Double].NaN    gv.Columns.Add(gvc)  Next   Return gvEnd Function The key to using Relection is using the GetProperties method on the type you pass in. When you pass in a Product object as Type, you can now use the GetProperties method and specify, via flags, which properties you wish to return. In the code that I wrote, I am just retrieving the Public properties and only those that are Instance properties. I do not want any static/Shared properties or private properties. GetProperties returns an array of PropertyInfo objects. You can loop through this array and build your GridViewColumn objects by reading the Name property from the PropertyInfo object. Build the Product Screen To populate the ListView shown in Figure 1, you might write code like the following: C#private void CollectionSample(){  Product prod = new Product();   // Setup the GridView Columns  lstData.View =      WPFListViewCommon.CreateGridViewColumns(typeOf(Product));  lstData.DataContext = prod.GetProducts();} VB.NETPrivate Sub CollectionSample()  Dim prod As New Product()   ' Setup the GridView Columns  lstData.View = WPFListViewCommon.CreateGridViewColumns( _       GetType(Product))  lstData.DataContext = prod.GetProducts()End Sub All you need to do now is to pass in a Type object from your Product class that you can get by using the typeOf() function in C# or the GetType() function in VB. That’s all there is to it! Summary There are so many different ways to approach the same problem in programming. That is what makes programming so much fun! In this blog post I showed you how to create ListView columns on the fly using Reflection. This gives you a lot of flexibility without having to write extra code as was done previously. NOTE: You can download the complete sample code (in both VB and C#) at my website. http://www.pdsa.com/downloads. Choose Tips & Tricks, then "WPF ListView as a DataGrid – Part 3" from the drop-down. Good Luck with your Coding,Paul Sheriff ** SPECIAL OFFER FOR MY BLOG READERS **Visit http://www.pdsa.com/Event/Blog for a free eBook on "Fundamentals of N-Tier".  

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• Error "exit signal Bus error (7)" How to continue after making a backtrace?

  - by Mikel

  I have a Centos Server in 1and1 with Apache, Magento, MagentoBooster and Xcache installed. The server usually (1-8 times per day) prints this error "exit signal Bus error (7)" and sometimes this causes Apache not to respond. I have made a backtrace with GDB, but I don't know how to continue. gdb /usr/sbin/httpd core.XXXX --batch --quiet -ex "thread apply all bt full" backtrace.log The backtrace: [New Thread 15312] [Thread debugging using libthread_db enabled] Core was generated by `/usr/sbin/httpd'. Program terminated with signal 7, Bus error. #0 0x00002abcf6c7324e in memcpy () from /lib64/libc.so.6 Thread 1 (Thread 0x2abcf8c72300 (LWP 15312)): #0 0x00002abcf6c7324e in memcpy () from /lib64/libc.so.6 No symbol table info available. #1 0x00002abd02e6b9c7 in ?? () from /usr/lib64/php/modules//php_ioncube_loader_lin_5.2_x86_64.so No symbol table info available. #2 0x00002abd02ed4d47 in _zval_dup () from /usr/lib64/php/modules//php_ioncube_loader_lin_5.2_x86_64.so No symbol table info available. #3 0x00002abd02ecdffb in ?? () from /usr/lib64/php/modules//php_ioncube_loader_lin_5.2_x86_64.so No symbol table info available. #4 0x00002abd02c32636 in xc_compile_file (h=0x7fffc3e7e4f0, type=2) at /opt/xcache-1.3.2-rc1/xcache.c:1060 __orig_bailout = 0x7fffc3e88f10 __bailout = {{__jmpbuf = {46991244125792, 3379122525071325456, 46991369192208, 140736480142576, 140736480142656, 46991244125792, 3379207471940512272, 3379122524988693332}, __mask_was_saved = 0, __saved_mask = {__val = {46991369228841, 46991369206800, 46991369195208, 46991382361728, 46991369196536, 46991369206984, 46991369210744, 0, 46991240130544, 140733193388033, 0, 140736480142296, 46991240361284, 46991369207528, 46991369232128, 3}}}} sandbox = {alloc = 0, filename = 0x2abd078dd0e0 "/var/www/vhosts/DOMAIN/httpdocs/var/ait_rewrite/67b58abff9e6bd7b400bb2fc1903bf2f.php", orig_included_files = {nTableSize = 256, nTableMask = 255, nNumOfElements = 191, nNextFreeElement = 0, pInternalPointer = 0x2abcf4da53d0, pListHead = 0x2abcf4da53d0, pListTail = 0x2abd07dfeb28, arBuckets = 0x2abd0896d690, pDestructor = 0, persistent = 0 '\000', nApplyCount = 0 '\000', bApplyProtection = 1 '\001'}, tmp_included_files = 0x2abd0069e830, orig_zend_constants = 0x2abd0d630b60, tmp_zend_constants = {nTableSize = 2048, nTableMask = 2047, nNumOfElements = 1559, nNextFreeElement = 0, pInternalPointer = 0x2abd08283760, pListHead = 0x2abd08283760, pListTail = 0x2abd08320810, arBuckets = 0x2abd08302aa0, pDestructor = 0x2abd02c34850 <xc_free_zend_constant>, persistent = 1 '\001', nApplyCount = 0 '\000', bApplyProtection = 1 '\001'}, orig_function_table = 0x2abd0d61f340, orig_class_table = 0x2abd0d61f2b0, orig_auto_globals = 0x2abd0d618910, tmp_function_table = {nTableSize = 2048, nTableMask = 2047, nNumOfElements = 1555, nNextFreeElement = 0, pInternalPointer = 0x2abd08320ce0, pListHead = 0x2abd08320ce0, pListTail = 0x2abd0933fe60, arBuckets = 0x2abd079c8500, pDestructor = 0x2abd0033e1d0 <zend_function_dtor>, persistent = 1 '\001', nApplyCount = 0 '\000', bApplyProtection = 0 '\000'}, tmp_class_table = { nTableSize = 16, nTableMask = 15, nNumOfElements = 0, nNextFreeElement = 0, pInternalPointer = 0x0, pListHead = 0x0, pListTail = 0x0, arBuckets = 0x2abd079dbf60, pDestructor = 0x2abd0033dcf0 <destroy_zend_class>, persistent = 1 '\001', nApplyCount = 0 '\000', bApplyProtection = 0 '\000'}, tmp_auto_globals = {nTableSize = 16, nTableMask = 15, nNumOfElements = 9, nNextFreeElement = 0, pInternalPointer = 0x2abd0933ffc0, pListHead = 0x2abd0933ffc0, pListTail = 0x2abd093403e0, arBuckets = 0x2abd09340470, pDestructor = 0, persistent = 1 '\001', nApplyCount = 0 '\000', bApplyProtection = 0 '\000'}, tmp_internal_constant_tail = 0x2abd08320810, tmp_internal_function_tail = 0x2abd0933fe60, tmp_internal_class_tail = 0x0, orig_user_error_handler_error_reporting = 8191} op_array = <value optimized out> xce = {type = XC_TYPE_PHP, hvalue = 2460, next = 0x2abd0d939e60, cache = 0x2abd0d90b038, size = 10, refcount = 46991369191320, hits = 4, ctime = 46991362335072, atime = 8, dtime = 46991240673248, ttl = 46991369192096, name = {lval = 46991363920096, dval = 2.3216818564143281e-310, str = { val = 0x2abd078dd0e0 "/var/www/vhosts/DOMAIN/httpdocs/var/ait_rewrite/67b58abff9e6bd7b400bb2fc1903bf2f.php", len = 107}, ht = 0x2abd078dd0e0, obj = {handle = 126734560, handlers = 0x2abd0000006b}}, data = {php = 0x7fffc3e7e440, var = 0x7fffc3e7e440}, have_references = 0 '\000'} stored_xce = 0x0 php = {sourcesize = 8947, device = 64769, inode = 9907963, mtime = 1353055102, op_array = 0x2abd00344004, constinfo_cnt = 1, constinfos = 0x0, funcinfo_cnt = 132120232, funcinfos = 0x8, classinfo_cnt = 8, classinfos = 0x0, have_early_binding = 168 '\250', autoglobal_cnt = 10941, autoglobals = 0x8} cache = 0x2abd0d90b038 catched = <value optimized out> filename = <value optimized out> opened_path_buffer = "\000\000\000\000\000\000\000\000I\032\065\000\275*\000\000\300\347i\000\275*\000\000\001\000\000\000\000\000\000\000\377\377\377\377\000\000\000\000\000\000\000\000\003\000\000\000[\337\227\337,\002pr\n\000\000\000\000\000\000\000P\323\347\303\377\177\000\000\357\367\220\b\275*\000\000\243\002M\a\275*\000\000\005", '\000' <repeats 15 times>"\357, \367\220\b\275*\000\000\244\002M\a\275*\000\000Du0\000\275*\000\000\b\000\000\000\000\000\000\000\232b=\365\000\000\000\000\002\000\000\000\377\177\000\000\005\000\000\000\275*\000\000\220\322\347\303\377\177\000\000\000\020\000\000\000\000\000\000,\324\347\303\377\177\000\000`\321\347\303^", '\000' <repeats 27 times>, "\f\000\000 \001", '\000' <repeats 11 times>"\260, \322\347\303", '\000' <repeats 12 times>, "P\323\347\303\377\177\000\000x\225\332\364\004\000\000\000\001\000\000\000\031\000\000\000\300\331\336\a\275*\000\000\300\331\336\a\275*\000\000"... old_constinfo_cnt = 1559 old_funcinfo_cnt = 1555 old_classinfo_cnt = 0 #5 0x00002abd003290bf in compile_filename () from /etc/httpd/modules/libphp5.so No symbol table info available. #6 0x00002abd00398ded in ?? () from /etc/httpd/modules/libphp5.so No symbol table info available. #7 0x00002abd0036628c in execute () from /etc/httpd/modules/libphp5.so No symbol table info available. #8 0x00002abd0033b796 in zend_call_function () from /etc/httpd/modules/libphp5.so No symbol table info available. #9 0x00002abd0035b1e1 in zend_call_method () from /etc/httpd/modules/libphp5.so No symbol table info available. #10 0x00002abd00273bf4 in zif_spl_autoload_call () from /etc/httpd/modules/libphp5.so No symbol table info available. #11 0x00002abd0033b945 in zend_call_function () from /etc/httpd/modules/libphp5.so No symbol table info available. #12 0x00002abd0033c51e in zend_lookup_class_ex () from /etc/httpd/modules/libphp5.so No symbol table info available. #13 0x00002abd0033c728 in zend_fetch_class () from /etc/httpd/modules/libphp5.so No symbol table info available. #14 0x00002abd003a61ab in ?? () from /etc/httpd/modules/libphp5.so No symbol table info available. #15 0x00002abd0036628c in execute () from /etc/httpd/modules/libphp5.so No symbol table info available. #16 0x00002abd00366b91 in ?? () from /etc/httpd/modules/libphp5.so No symbol table info available. #17 0x00002abd0036628c in execute () from /etc/httpd/modules/libphp5.so No symbol table info available. #18 0x00002abd00366b91 in ?? () from /etc/httpd/modules/libphp5.so No symbol table info available. #19 0x00002abd0036628c in execute () from /etc/httpd/modules/libphp5.so No symbol table info available. #20 0x00002abd00366b91 in ?? () from /etc/httpd/modules/libphp5.so No symbol table info available. #21 0x00002abd0036628c in execute () from /etc/httpd/modules/libphp5.so No symbol table info available. #22 0x00002abd00366b91 in ?? () from /etc/httpd/modules/libphp5.so No symbol table info available. #23 0x00002abd0036628c in execute () from /etc/httpd/modules/libphp5.so No symbol table info available. #24 0x00002abd00366b91 in ?? () from /etc/httpd/modules/libphp5.so No symbol table info available. #25 0x00002abd0036628c in execute () from /etc/httpd/modules/libphp5.so No symbol table info available. #26 0x00002abd00366b91 in ?? () from /etc/httpd/modules/libphp5.so No symbol table info available. #27 0x00002abd0036628c in execute () from /etc/httpd/modules/libphp5.so No symbol table info available. #28 0x00002abd00366b91 in ?? () from /etc/httpd/modules/libphp5.so No symbol table info available. #29 0x00002abd0036628c in execute () from /etc/httpd/modules/libphp5.so No symbol table info available. #30 0x00002abd00366b91 in ?? () from /etc/httpd/modules/libphp5.so No symbol table info available. #31 0x00002abd0036628c in execute () from /etc/httpd/modules/libphp5.so No symbol table info available. #32 0x00002abd00366b91 in ?? () from /etc/httpd/modules/libphp5.so No symbol table info available. #33 0x00002abd0036628c in execute () from /etc/httpd/modules/libphp5.so No symbol table info available. #34 0x00002abd00366b91 in ?? () from /etc/httpd/modules/libphp5.so No symbol table info available. #35 0x00002abd0036628c in execute () from /etc/httpd/modules/libphp5.so No symbol table info available. #36 0x00002abd00366b91 in ?? () from /etc/httpd/modules/libphp5.so No symbol table info available. #37 0x00002abd0036628c in execute () from /etc/httpd/modules/libphp5.so No symbol table info available. #38 0x00002abd00346943 in zend_execute_scripts () from /etc/httpd/modules/libphp5.so No symbol table info available. #39 0x00002abd00306898 in php_execute_script () from /etc/httpd/modules/libphp5.so No symbol table info available. #40 0x00002abd003cb09d in ?? () from /etc/httpd/modules/libphp5.so No symbol table info available. #41 0x00002abcf4cfca0a in ap_run_handler () No symbol table info available. #42 0x00002abcf4cffe98 in ap_invoke_handler () No symbol table info available. #43 0x00002abcf4d0a74a in ap_internal_redirect () No symbol table info available. #44 0x00002abcfdb45bf0 in ap_make_dirstr_parent () from /etc/httpd/modules/mod_rewrite.so No symbol table info available. #45 0x00002abcf4cfca0a in ap_run_handler () No symbol table info available. #46 0x00002abcf4cffe98 in ap_invoke_handler () No symbol table info available. #47 0x00002abcf4d0a8f8 in ap_process_request () No symbol table info available. #48 0x00002abcf4d07b30 in ?? () No symbol table info available. #49 0x00002abcf4d03c92 in ap_run_process_connection () No symbol table info available. #50 0x00002abcf4d0e7a9 in ?? () No symbol table info available. #51 0x00002abcf4d0ea3a in ?? () No symbol table info available. #52 0x00002abcf4d0f29d in ap_mpm_run () No symbol table info available. #53 0x00002abcf4ce9e48 in main () No symbol table info available. Can anyone help me? ADITIONAL INFO php -v PHP 5.2.10 (cli) (built: Nov 13 2009 11:44:05) Copyright (c) 1997-2009 The PHP Group Zend Engine v2.2.0, Copyright (c) 1998-2009 Zend Technologies with XCache v1.3.2-rc1, Copyright (c) 2005-2011, by mOo with the ionCube PHP Loader v3.1.28, Copyright (c) 2002-2007, by ionCube Ltd. httpd -v Server version: Apache/2.2.3 Server built: May 4 2011 06:51:15 Apache modules: core prefork http_core mod_so mod_auth_basic mod_auth_digest mod_authn_file mod_authn_alias mod_authn_anon mod_authn_dbm mod_authn_default mod_authz_host mod_authz_user mod_authz_owner mod_authz_groupfile mod_authz_dbm mod_authz_default util_ldap mod_authnz_ldap mod_include mod_log_config mod_logio mod_env mod_ext_filter mod_mime_magic mod_expires mod_deflate mod_headers mod_usertrack mod_setenvif mod_mime mod_dav mod_status mod_autoindex mod_info mod_dav_fs mod_vhost_alias mod_negotiation mod_dir mod_actions mod_speling mod_userdir mod_alias mod_rewrite mod_proxy mod_proxy_balancer mod_proxy_ftp mod_proxy_http mod_proxy_connect mod_cache mod_suexec mod_disk_cache mod_file_cache mod_mem_cache mod_cgi mod_version mod_fcgid mod_perl mod_php5 mod_proxy_ajp mod_python mod_ssl Aditional modules: dbase ionCube Loader sysvsem sysvshm EDIT (November 18) I have disabled some suspicious modules and the error persist. The new backtrace: [New Thread 12403] [Thread debugging using libthread_db enabled] Core was generated by `/usr/sbin/httpd'. Program terminated with signal 7, Bus error. #0 0x00002b0c5754a24e in memcpy () from /lib64/libc.so.6 Thread 1 (Thread 0x2b0c59549300 (LWP 12403)): #0 0x00002b0c5754a24e in memcpy () from /lib64/libc.so.6 No symbol table info available. #1 0x00002b0c558519c7 in ?? () from /usr/lib64/php/modules//php_ioncube_loader_lin_5.2_x86_64.so No symbol table info available. #2 0x00002b0c558bad47 in _zval_dup () from /usr/lib64/php/modules//php_ioncube_loader_lin_5.2_x86_64.so No symbol table info available. #3 0x00002b0c558b3ffb in ?? () from /usr/lib64/php/modules//php_ioncube_loader_lin_5.2_x86_64.so No symbol table info available. #4 0x00002b0c60d650bf in compile_filename () from /etc/httpd/modules/libphp5.so No symbol table info available. #5 0x00002b0c60dd4ded in ?? () from /etc/httpd/modules/libphp5.so No symbol table info available. #6 0x00002b0c60da228c in execute () from /etc/httpd/modules/libphp5.so No symbol table info available. #7 0x00002b0c60d77796 in zend_call_function () from /etc/httpd/modules/libphp5.so No symbol table info available. #8 0x00002b0c60d971e1 in zend_call_method () from /etc/httpd/modules/libphp5.so No symbol table info available. #9 0x00002b0c60cafbf4 in zif_spl_autoload_call () from /etc/httpd/modules/libphp5.so No symbol table info available. #10 0x00002b0c60d77945 in zend_call_function () from /etc/httpd/modules/libphp5.so No symbol table info available. #11 0x00002b0c60d7851e in zend_lookup_class_ex () from /etc/httpd/modules/libphp5.so No symbol table info available. #12 0x00002b0c60d78728 in zend_fetch_class () from /etc/httpd/modules/libphp5.so No symbol table info available. #13 0x00002b0c60de21ab in ?? () from /etc/httpd/modules/libphp5.so No symbol table info available. #14 0x00002b0c60da228c in execute () from /etc/httpd/modules/libphp5.so No symbol table info available. #15 0x00002b0c60da2b91 in ?? () from /etc/httpd/modules/libphp5.so No symbol table info available. #16 0x00002b0c60da228c in execute () from /etc/httpd/modules/libphp5.so No symbol table info available. #17 0x00002b0c60da2b91 in ?? () from /etc/httpd/modules/libphp5.so No symbol table info available. #18 0x00002b0c60da228c in execute () from /etc/httpd/modules/libphp5.so No symbol table info available. #19 0x00002b0c60da2b91 in ?? () from /etc/httpd/modules/libphp5.so No symbol table info available. #20 0x00002b0c60da228c in execute () from /etc/httpd/modules/libphp5.so No symbol table info available. #21 0x00002b0c60da2b91 in ?? () from /etc/httpd/modules/libphp5.so No symbol table info available. #22 0x00002b0c60da228c in execute () from /etc/httpd/modules/libphp5.so No symbol table info available. #23 0x00002b0c60da2b91 in ?? () from /etc/httpd/modules/libphp5.so No symbol table info available. #24 0x00002b0c60da228c in execute () from /etc/httpd/modules/libphp5.so No symbol table info available. #25 0x00002b0c60da2b91 in ?? () from /etc/httpd/modules/libphp5.so No symbol table info available. #26 0x00002b0c60da228c in execute () from /etc/httpd/modules/libphp5.so No symbol table info available. #27 0x00002b0c60da2b91 in ?? () from /etc/httpd/modules/libphp5.so No symbol table info available. #28 0x00002b0c60da228c in execute () from /etc/httpd/modules/libphp5.so No symbol table info available. #29 0x00002b0c60da2b91 in ?? () from /etc/httpd/modules/libphp5.so No symbol table info available. #30 0x00002b0c60da228c in execute () from /etc/httpd/modules/libphp5.so No symbol table info available. #31 0x00002b0c60da2b91 in ?? () from /etc/httpd/modules/libphp5.so No symbol table info available. #32 0x00002b0c60da228c in execute () from /etc/httpd/modules/libphp5.so No symbol table info available. #33 0x00002b0c60da2b91 in ?? () from /etc/httpd/modules/libphp5.so No symbol table info available. #34 0x00002b0c60da228c in execute () from /etc/httpd/modules/libphp5.so No symbol table info available. #35 0x00002b0c60da2b91 in ?? () from /etc/httpd/modules/libphp5.so No symbol table info available. #36 0x00002b0c60da228c in execute () from /etc/httpd/modules/libphp5.so No symbol table info available. #37 0x00002b0c60da2b91 in ?? () from /etc/httpd/modules/libphp5.so No symbol table info available. #38 0x00002b0c60da228c in execute () from /etc/httpd/modules/libphp5.so No symbol table info available. #39 0x00002b0c60d82943 in zend_execute_scripts () from /etc/httpd/modules/libphp5.so No symbol table info available. #40 0x00002b0c60d42898 in php_execute_script () from /etc/httpd/modules/libphp5.so No symbol table info available. #41 0x00002b0c60e0709d in ?? () from /etc/httpd/modules/libphp5.so No symbol table info available. #42 0x00002b0c555d3a0a in ap_run_handler () No symbol table info available. #43 0x00002b0c555d6e98 in ap_invoke_handler () No symbol table info available. #44 0x00002b0c555e174a in ap_internal_redirect () No symbol table info available. #45 0x00002b0c5e41cbf0 in ap_make_dirstr_parent () from /etc/httpd/modules/mod_rewrite.so No symbol table info available. #46 0x00002b0c555d3a0a in ap_run_handler () No symbol table info available. #47 0x00002b0c555d6e98 in ap_invoke_handler () No symbol table info available. #48 0x00002b0c555e18f8 in ap_process_request () No symbol table info available. #49 0x00002b0c555deb30 in ?? () No symbol table info available. #50 0x00002b0c555dac92 in ap_run_process_connection () No symbol table info available. #51 0x00002b0c555e57a9 in ?? () No symbol table info available. #52 0x00002b0c555e5a3a in ?? () No symbol table info available. #53 0x00002b0c555e629d in ap_mpm_run () No symbol table info available. #54 0x00002b0c555c0e48 in main () No symbol table info available.

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• Using Oracle ADF Data Visualization Tools (DVT) Line Graphs to Display Weather Information

  - by Christian David Straub

  OverviewA guest post by Jeanne Waldman.I have a simple JDeveloper Fusion application that retrieves weather data. I wanted to compare the week's temperatures of different locations in a graph. I decided to check out the dvt:lineGraph component, and it took me a few minutes to add it to my jspx page and supply it with data.Drag and Drop the dvt:lineGraph onto your pageI opened my .jspx page in design modeIn the Component Palette, I selected ADF Data Visualization.Then I dragged 'Line' onto my page.A dialog popped up giving me options of the type of line graph. I chose the default.A lineGraph displayed with some default data. Hook up your weather dataNow I wanted to hook up my own data. I browsed the tagdoc, and I found the tabularData attribute.Attribute: tabularDataType: java.util.ListTagDoc:Specifies a list of data that the graph uses to create a grid and populate itself. The List consists of a three-member Object array for each data value to be passed to the graph. The members of each array must be organized as follows: The first member (index 0) is the column label, in the grid, of the data value. This is generally a String. If the graph has a time axis, then this should be a Java Date. Column labels typically identify groups in the graph. The second member (index 1) is the row label, in the grid, of the data value. This is generally a String. Row labels appear as series labels in the graph (usually in the legend). The third member (index 2) is the data value, which is usually a Double.The first member is the column label of the data value. This would be the day of the week.The second member is the row label of the data value. This would be the location name.The third member is the data value, usually a Double. This would be the temperature. I already had all this information, I just needed to put it in a List with a three-member Object array for each data value.   /**    * This is used for the lineGraph to show the data for each location.    */   public List<Object[]> getTabularData()   {      List<Object[]> tabularData = new ArrayList<Object []>();      List<WeatherForecast> weatherForecastList = getWeatherForecastList();      // loop through the list and build up the tabular data. Then cache it.      for(WeatherForecast wf : weatherForecastList)      {        List<ForecastDay> forecastDayList = wf.getForecastDayList();        String location = wf.getLocation();        for (ForecastDay fday : forecastDayList)        {          String day = fday.getPrettyDate();          String highTemp = fday.getHighF();          tabularData.add(new Object[]{day, location, Double.valueOf(highTemp)});        }             }      return tabularData;    }  Now I bound the lineGraph to this method by setting tabularData to#{weatherForAllLocationsBean.tabularData}weatherForAllLocationsBean is my bean that is defined in faces-config.xml. Adding a barGraphIn about 30 seconds, I added a barGraph with the same data. I dragged and dropped a bar graph onto the page, used the same tabularData as I did in the line graph. The page looks like this:  ConclusionI was very happy how fast it was to hook up my weather data to these graphs. They look great, and they have built in functionality. For instance, I can hide/show a location by clicking on the name of the location in the legend.

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• Enabling Http caching and compression in IIS 7 for asp.net websites

  - by anil.kasalanati

  Caching – There are 2 ways to set Http caching 1-      Use Max age property 2-      Expires header. Doing the changes via IIS Console – 1.       Select the website for which you want to enable caching and then select Http Responses in the features tab       2.       Select the Expires webcontent and on changing the After setting you can generate the max age property for the cache control    3.       Following is the screenshot of the headers   Then you can use some tool like fiddler and see 302 response coming from the server. Doing it web.config way – We can add static content section in the system.webserver section <system.webServer>   <staticContent>             <clientCache cacheControlMode="UseMaxAge" cacheControlMaxAge="365.00:00:00" />   </staticContent> Compression - By default static compression is enabled on IIS 7.0 but the only thing which falls under that category is CSS but this is not enough for most of the websites using lots of javascript.  If you just thought by enabling dynamic compression would fix this then you are wrong so please follow following steps –   In some machines the dynamic compression is not enabled and following are the steps to enable it – Open server manager Roles > Web Server (IIS) Role Services (scroll down) > Add Role Services Add desired role (Web Server > Performance > Dynamic Content Compression) Next, Install, Wait…Done!   ?  Roles > Web Server (IIS) ?  Role Services (scroll down) > Add Role Services     Add desired role (Web Server > Performance > Dynamic Content Compression)     Next, Install, Wait…Done!     Enable  - ?  Open server manager ?  Roles > Web Server (IIS) > Internet Information Services (IIS) Manager   Next pane: Sites > Default Web Site > Your Web Site Main pane: IIS > Compression         Then comes the custom configuration for encrypting javascript resources. The problem is that the compression in IIS 7 completely works on the mime types and by default there is a mismatch in the mime types Go to following location C:\Windows\System32\inetsrv\config Open applicationHost.config The mimemap is as follows  <mimeMap fileExtension=".js" mimeType="application/javascript" />   So the section in the staticTypes should be changed          <add mimeType="application/javascript" enabled="true" />     Doing the web.config way –   We can add following section in the system.webserver section <system.webServer> <urlCompression doDynamicCompression="false"  doStaticCompression="true"/> More Information/References – ·         http://weblogs.asp.net/owscott/archive/2009/02/22/iis-7-compression-good-bad-how-much.aspx ·         http://www.west-wind.com/weblog/posts/98538.aspx  

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• nm-applet gone?

  - by welp

  nm-applet seems to have disappeared from my system. I am running 12.10. Here's what I get when I check my package manager logs: ? ~ grep network-manager /var/log/dpkg.log 2012-10-06 10:37:08 upgrade network-manager-gnome:amd64 0.9.6.2-0ubuntu5 0.9.6.2-0ubuntu6 2012-10-06 10:37:08 status half-configured network-manager-gnome:amd64 0.9.6.2-0ubuntu5 2012-10-06 10:37:08 status unpacked network-manager-gnome:amd64 0.9.6.2-0ubuntu5 2012-10-06 10:37:08 status half-installed network-manager-gnome:amd64 0.9.6.2-0ubuntu5 2012-10-06 10:37:08 status half-installed network-manager-gnome:amd64 0.9.6.2-0ubuntu5 2012-10-06 10:37:08 status half-installed network-manager-gnome:amd64 0.9.6.2-0ubuntu5 2012-10-06 10:37:08 status half-installed network-manager-gnome:amd64 0.9.6.2-0ubuntu5 2012-10-06 10:37:08 status half-installed network-manager-gnome:amd64 0.9.6.2-0ubuntu5 2012-10-06 10:37:08 status half-installed network-manager-gnome:amd64 0.9.6.2-0ubuntu5 2012-10-06 10:37:08 status half-installed network-manager-gnome:amd64 0.9.6.2-0ubuntu5 2012-10-06 10:37:09 status half-installed network-manager-gnome:amd64 0.9.6.2-0ubuntu5 2012-10-06 10:37:09 status unpacked network-manager-gnome:amd64 0.9.6.2-0ubuntu6 2012-10-06 10:37:09 status unpacked network-manager-gnome:amd64 0.9.6.2-0ubuntu6 2012-10-06 10:39:50 configure network-manager-gnome:amd64 0.9.6.2-0ubuntu6 2012-10-06 10:39:50 status unpacked network-manager-gnome:amd64 0.9.6.2-0ubuntu6 2012-10-06 10:39:50 status unpacked network-manager-gnome:amd64 0.9.6.2-0ubuntu6 2012-10-06 10:39:50 status half-configured network-manager-gnome:amd64 0.9.6.2-0ubuntu6 2012-10-06 10:39:50 status installed network-manager-gnome:amd64 0.9.6.2-0ubuntu6 2012-10-28 22:27:23 status installed network-manager-gnome:amd64 0.9.6.2-0ubuntu6 2012-10-28 22:27:23 remove network-manager-gnome:amd64 0.9.6.2-0ubuntu6 2012-10-28 22:27:23 status half-configured network-manager-gnome:amd64 0.9.6.2-0ubuntu6 2012-10-28 22:27:23 status half-installed network-manager-gnome:amd64 0.9.6.2-0ubuntu6 2012-10-28 22:27:23 status half-installed network-manager-gnome:amd64 0.9.6.2-0ubuntu6 2012-10-28 22:27:23 status half-installed network-manager-gnome:amd64 0.9.6.2-0ubuntu6 2012-10-28 22:27:23 status half-installed network-manager-gnome:amd64 0.9.6.2-0ubuntu6 2012-10-28 22:27:23 status half-installed network-manager-gnome:amd64 0.9.6.2-0ubuntu6 2012-10-28 22:27:23 status half-installed network-manager-gnome:amd64 0.9.6.2-0ubuntu6 2012-10-28 22:27:23 status half-installed network-manager-gnome:amd64 0.9.6.2-0ubuntu6 2012-10-28 22:27:23 status half-installed network-manager-gnome:amd64 0.9.6.2-0ubuntu6 2012-10-28 22:27:23 status config-files network-manager-gnome:amd64 0.9.6.2-0ubuntu6 2012-10-28 22:27:23 status config-files network-manager-gnome:amd64 0.9.6.2-0ubuntu6 2012-10-31 19:58:03 install network-manager-gnome:amd64 0.9.6.2-0ubuntu6 0.9.6.2-0ubuntu6 2012-10-31 19:58:03 status half-installed network-manager-gnome:amd64 0.9.6.2-0ubuntu6 2012-10-31 19:58:03 status half-installed network-manager-gnome:amd64 0.9.6.2-0ubuntu6 2012-10-31 19:58:03 status half-installed network-manager-gnome:amd64 0.9.6.2-0ubuntu6 2012-10-31 19:58:03 status half-installed network-manager-gnome:amd64 0.9.6.2-0ubuntu6 2012-10-31 19:58:03 status half-installed network-manager-gnome:amd64 0.9.6.2-0ubuntu6 2012-10-31 19:58:03 status half-installed network-manager-gnome:amd64 0.9.6.2-0ubuntu6 2012-10-31 19:58:03 status half-installed network-manager-gnome:amd64 0.9.6.2-0ubuntu6 2012-10-31 19:58:03 status half-installed network-manager-gnome:amd64 0.9.6.2-0ubuntu6 2012-10-31 19:58:03 status unpacked network-manager-gnome:amd64 0.9.6.2-0ubuntu6 2012-10-31 19:58:03 status unpacked network-manager-gnome:amd64 0.9.6.2-0ubuntu6 2012-10-31 19:58:06 configure network-manager-gnome:amd64 0.9.6.2-0ubuntu6 2012-10-31 19:58:06 status unpacked network-manager-gnome:amd64 0.9.6.2-0ubuntu6 2012-10-31 19:58:07 status unpacked network-manager-gnome:amd64 0.9.6.2-0ubuntu6 2012-10-31 19:58:07 status half-configured network-manager-gnome:amd64 0.9.6.2-0ubuntu6 2012-10-31 19:58:07 status installed network-manager-gnome:amd64 0.9.6.2-0ubuntu6 ? ~ Unfortunately, I cannot find network-manager-applet package at all: ? ~ apt-cache search network-manager-applet ? ~ Here are the contents of /etc/apt/sources.list: ? ~ cat /etc/apt/sources.list # deb cdrom:[Ubuntu 12.04 LTS _Precise Pangolin_ - Release amd64 (20120425)]/ dists/precise/main/binary-i386/ # deb cdrom:[Ubuntu 12.04 LTS _Precise Pangolin_ - Release amd64 (20120425)]/ dists/precise/restricted/binary-i386/ # deb cdrom:[Ubuntu 12.04 LTS _Precise Pangolin_ - Release amd64 (20120425)]/ precise main restricted # See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to # newer versions of the distribution. deb http://gb.archive.ubuntu.com/ubuntu/ quantal main restricted deb-src http://gb.archive.ubuntu.com/ubuntu/ quantal main restricted ## Major bug fix updates produced after the final release of the ## distribution. deb http://gb.archive.ubuntu.com/ubuntu/ quantal-updates main restricted deb-src http://gb.archive.ubuntu.com/ubuntu/ quantal-updates main restricted ## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu ## team. Also, please note that software in universe WILL NOT receive any ## review or updates from the Ubuntu security team. deb http://gb.archive.ubuntu.com/ubuntu/ quantal universe deb-src http://gb.archive.ubuntu.com/ubuntu/ quantal universe deb http://gb.archive.ubuntu.com/ubuntu/ quantal-updates universe deb-src http://gb.archive.ubuntu.com/ubuntu/ quantal-updates universe ## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu ## team, and may not be under a free licence. Please satisfy yourself as to ## your rights to use the software. Also, please note that software in ## multiverse WILL NOT receive any review or updates from the Ubuntu ## security team. deb http://gb.archive.ubuntu.com/ubuntu/ quantal multiverse deb-src http://gb.archive.ubuntu.com/ubuntu/ quantal multiverse deb http://gb.archive.ubuntu.com/ubuntu/ quantal-updates multiverse deb-src http://gb.archive.ubuntu.com/ubuntu/ quantal-updates multiverse ## N.B. software from this repository may not have been tested as ## extensively as that contained in the main release, although it includes ## newer versions of some applications which may provide useful features. ## Also, please note that software in backports WILL NOT receive any review ## or updates from the Ubuntu security team. deb http://gb.archive.ubuntu.com/ubuntu/ quantal-backports main restricted universe multiverse deb-src http://gb.archive.ubuntu.com/ubuntu/ quantal-backports main restricted universe multiverse deb http://security.ubuntu.com/ubuntu quantal-security main restricted deb-src http://security.ubuntu.com/ubuntu quantal-security main restricted deb http://security.ubuntu.com/ubuntu quantal-security universe deb-src http://security.ubuntu.com/ubuntu quantal-security universe deb http://security.ubuntu.com/ubuntu quantal-security multiverse deb-src http://security.ubuntu.com/ubuntu quantal-security multiverse ## Uncomment the following two lines to add software from Canonical's ## 'partner' repository. ## This software is not part of Ubuntu, but is offered by Canonical and the ## respective vendors as a service to Ubuntu users. # deb http://archive.canonical.com/ubuntu precise partner # deb-src http://archive.canonical.com/ubuntu precise partner ## This software is not part of Ubuntu, but is offered by third-party ## developers who want to ship their latest software. deb http://extras.ubuntu.com/ubuntu quantal main deb-src http://extras.ubuntu.com/ubuntu quantal main ? ~ Right now, I can't think of anything else. Happy to provide more info upon request.

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• SQL SERVER – LCK_M_XXX – Wait Type – Day 15 of 28

  - by pinaldave

  Locking is a mechanism used by the SQL Server Database Engine to synchronize access by multiple users to the same piece of data, at the same time. In simpler words, it maintains the integrity of data by protecting (or preventing) access to the database object. From Book On-Line: LCK_M_BU Occurs when a task is waiting to acquire a Bulk Update (BU) lock. LCK_M_IS Occurs when a task is waiting to acquire an Intent Shared (IS) lock. LCK_M_IU Occurs when a task is waiting to acquire an Intent Update (IU) lock. LCK_M_IX Occurs when a task is waiting to acquire an Intent Exclusive (IX) lock. LCK_M_S Occurs when a task is waiting to acquire a Shared lock. LCK_M_SCH_M Occurs when a task is waiting to acquire a Schema Modify lock. LCK_M_SCH_S Occurs when a task is waiting to acquire a Schema Share lock. LCK_M_SIU Occurs when a task is waiting to acquire a Shared With Intent Update lock. LCK_M_SIX Occurs when a task is waiting to acquire a Shared With Intent Exclusive lock. LCK_M_U Occurs when a task is waiting to acquire an Update lock. LCK_M_UIX Occurs when a task is waiting to acquire an Update With Intent Exclusive lock. LCK_M_X Occurs when a task is waiting to acquire an Exclusive lock. LCK_M_XXX Explanation: I think the explanation of this wait type is the simplest. When any task is waiting to acquire lock on any resource, this particular wait type occurs. The common reason for the task to be waiting to put lock on the resource is that the resource is already locked and some other operations may be going on within it. This wait also indicates that resources are not available or are occupied at the moment due to some reasons. There is a good chance that the waiting queries start to time out if this wait type is very high. Client application may degrade the performance as well. You can use various methods to find blocking queries: EXEC sp_who2 SQL SERVER – Quickest Way to Identify Blocking Query and Resolution – Dirty Solution DMV – sys.dm_tran_locks DMV – sys.dm_os_waiting_tasks Reducing LCK_M_XXX wait: Check the Explicit Transactions. If transactions are very long, this wait type can start building up because of other waiting transactions. Keep the transactions small. Serialization Isolation can build up this wait type. If that is an acceptable isolation for your business, this wait type may be natural. The default isolation of SQL Server is ‘Read Committed’. One of my clients has changed their isolation to “Read Uncommitted”. I strongly discourage the use of this because this will probably lead to having lots of dirty data in the database. Identify blocking queries mentioned using various methods described above, and then optimize them. Partition can be one of the options to consider because this will allow transactions to execute concurrently on different partitions. If there are runaway queries, use timeout. (Please discuss this solution with your database architect first as timeout can work against you). Check if there is no memory and IO-related issue using the following counters: Checking Memory Related Perfmon Counters SQLServer: Memory Manager\Memory Grants Pending (Consistent higher value than 0-2) SQLServer: Memory Manager\Memory Grants Outstanding (Consistent higher value, Benchmark) SQLServer: Buffer Manager\Buffer Hit Cache Ratio (Higher is better, greater than 90% for usually smooth running system) SQLServer: Buffer Manager\Page Life Expectancy (Consistent lower value than 300 seconds) Memory: Available Mbytes (Information only) Memory: Page Faults/sec (Benchmark only) Memory: Pages/sec (Benchmark only) Checking Disk Related Perfmon Counters Average Disk sec/Read (Consistent higher value than 4-8 millisecond is not good) Average Disk sec/Write (Consistent higher value than 4-8 millisecond is not good) Average Disk Read/Write Queue Length (Consistent higher value than benchmark is not good) Read all the post in the Wait Types and Queue series. Note: The information presented here is from my experience and there is no way that I claim it to be accurate. I suggest reading Book OnLine for further clarification. All the discussion of Wait Stats in this blog is generic and varies from system to system. It is recommended that you test this on a development server before implementing it to a production server. Reference: Pinal Dave (http://blog.SQLAuthority.com) Filed under: Pinal Dave, PostADay, SQL, SQL Authority, SQL Query, SQL Server, SQL Tips and Tricks, SQL Wait Stats, SQL Wait Types, T SQL, Technology

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• Using the “Settings.settings” functionalities in VB.NET can be tricky…

  - by Vincent Grondin

  Sometime you’re searching for something forever and when you find it, you realize it was right under your nose.  Maybe you were distracted by other things around… or maybe that thing right under your nose was so well hidden that it deserves a blog post…   That happened to me a few days ago while using the “Settings.settings” functionalities in my VB.NET application…  I thought it was a cool feature and I decided to use it…  So there I am adding new settings with “USER” scope and StringCollection as the data type, testing my application and everything works perfectly fine...  That was before I decided to modify the “Value” of one of my settings…  After changing the value of one of my settings, I start my application again and, to my surprise, my new values aren’t showing!  Hmmm… That’s odd…  My setting was a pretty long list of strings so I was rather angry at myself for not saving my work after I was done…  So I open up the Settings.setting in the designer and click the ellipsis symbol to enter my string collection again, but to my great pleasure (and disbelief) my strings are there!!!  Alright, you rock VB.NET!  You’ve just save me a bunch of typing time and I’m thinking it’s just a simple Visual Studio glitch…  I hit “Save” then “Save All” (just in case) and finally I rebuild everything and fire up my app once again.  Huh?  Where are my darn strings????????  Ok there’s a bug there…  I open up the app.config and my new strings are there!!!  Alright, let’s recap…  My new strings are in the app.config, they show correctly in the Settings.settings designer UI but they aren’t showing at runtime…  Hmmmm?  Let’s try something else…  Let’s start the application but outside Visual Studio this time… I fire up the exe and BAM!  My strings where there!  I “alt-tab” and hit “F5” and BOOM, no strings!  So it’s a bug in the Visual Studio environment… or could it be a FEATURE?  I must admit that I’m a little confused over what’s a bug and what’s a feature in Visual Studio… lol!   Finally I found out there’s a “cache” for your Visual Studio located here:  C:\Users\<your username>\AppData\Local\Microsoft\<your app name and a very weird temp ID>\<your app version>\user.config When using the “Settings.settings” with a setting of scope “user”, this file is out of sync with your app.config until you manually decide to update it… The button is right there… under your nose… at the top left corner of your screen in the settings designer…  See the big “Synchronize” button there?  Yep…  Now that’s user friendly isn’t it?  Oh, and wait until you see what it does when you click it…  It prompts you and basically says:  “Would you like your settings to start working inside Visual Studio now that you found out that I exist?” and of course the right answer is yes… or rather “OK”…  Unfortunately, you have to do this every time you edit a value… On the other hand, adding and removing settings seem to work flawlessly without having to click this magical button… go figure!  Oh and I almost forgot… this great “feature” is only available for VB.NET…  A project in C# using Settings.settings will work perfectly EVEN when editing values… Here’s a screenshot that shows this important button: Button Using other data types appears to work perfectly well…   Maybe it’s simply related to the StringCollection data type?  If you are a VB.NET programmer, you should pay attention to this when you plan on using the settings functionalities and your scope is “user” and your data type is StringCollection… Happy coding all!

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• Android edtftpj/PRo SFTP heap worker problem

  - by Mr. Kakakuwa Bird

  Hi I am using edtftpj-pro3.1 trial copy in my android app to make SFTP connection with the server. After few connections with the server with 5-6 file transfers, my app is crashing with following exception. Is it causing the problem or what could be the problem?? I tried setParallelMode(false) in SSHFTPClient, but it is not working. Exception i'm getting is, 05-31 18:28:12.661: ERROR/dalvikvm(589): HeapWorker is wedged: 10173ms spent inside Lcom/enterprisedt/net/j2ssh/sftp/SftpFileInputStream;.finalize()V 05-31 18:28:12.661: INFO/dalvikvm(589): DALVIK THREADS: 05-31 18:28:12.661: INFO/dalvikvm(589): "main" prio=5 tid=3 WAIT 05-31 18:28:12.661: INFO/dalvikvm(589): | group="main" sCount=1 dsCount=0 s=N obj=0x4001b260 self=0xbd18 05-31 18:28:12.661: INFO/dalvikvm(589): | sysTid=589 nice=0 sched=0/0 cgrp=default handle=-1343993192 05-31 18:28:12.661: INFO/dalvikvm(589): at java.lang.Object.wait(Native Method) 05-31 18:28:12.661: INFO/dalvikvm(589): - waiting on <0x122d70 (a android.os.MessageQueue) 05-31 18:28:12.661: INFO/dalvikvm(589): at java.lang.Object.wait(Object.java:288) 05-31 18:28:12.661: INFO/dalvikvm(589): at android.os.MessageQueue.next(MessageQueue.java:148) 05-31 18:28:12.661: INFO/dalvikvm(589): at android.os.Looper.loop(Looper.java:110) 05-31 18:28:12.661: INFO/dalvikvm(589): at android.app.ActivityThread.main(ActivityThread.java:4363) 05-31 18:28:12.661: INFO/dalvikvm(589): at java.lang.reflect.Method.invokeNative(Native Method) 05-31 18:28:12.661: INFO/dalvikvm(589): at java.lang.reflect.Method.invoke(Method.java:521) 05-31 18:28:12.661: INFO/dalvikvm(589): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860) 05-31 18:28:12.661: INFO/dalvikvm(589): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618) 05-31 18:28:12.661: INFO/dalvikvm(589): at dalvik.system.NativeStart.main(Native Method) 05-31 18:28:12.671: INFO/dalvikvm(589): "Transport protocol 1" daemon prio=5 tid=29 NATIVE 05-31 18:28:12.671: INFO/dalvikvm(589): | group="main" sCount=1 dsCount=0 s=N obj=0x44774768 self=0x3a7938 05-31 18:28:12.671: INFO/dalvikvm(589): | sysTid=605 nice=0 sched=0/0 cgrp=default handle=3834600 05-31 18:28:12.671: INFO/dalvikvm(589): at org.apache.harmony.luni.platform.OSNetworkSystem.receiveStreamImpl(Native Method) 05-31 18:28:12.671: INFO/dalvikvm(589): at org.apache.harmony.luni.platform.OSNetworkSystem.receiveStream(OSNetworkSystem.java:478) 05-31 18:28:12.671: INFO/dalvikvm(589): at org.apache.harmony.luni.net.PlainSocketImpl.read(PlainSocketImpl.java:565) 05-31 18:28:12.671: INFO/dalvikvm(589): at org.apache.harmony.luni.net.SocketInputStream.read(SocketInputStream.java:87) 05-31 18:28:12.671: INFO/dalvikvm(589): at org.apache.harmony.luni.net.SocketInputStream.read(SocketInputStream.java:67) 05-31 18:28:12.671: INFO/dalvikvm(589): at java.io.BufferedInputStream.fillbuf(BufferedInputStream.java:157) 05-31 18:28:12.671: INFO/dalvikvm(589): at java.io.BufferedInputStream.read(BufferedInputStream.java:346) 05-31 18:28:12.671: INFO/dalvikvm(589): at java.io.BufferedInputStream.read(BufferedInputStream.java:341) 05-31 18:28:12.671: INFO/dalvikvm(589): at com.enterprisedt.net.j2ssh.transport.A.A((null):-1) 05-31 18:28:12.671: INFO/dalvikvm(589): at com.enterprisedt.net.j2ssh.transport.A.B((null):-1) 05-31 18:28:12.671: INFO/dalvikvm(589): at com.enterprisedt.net.j2ssh.transport.TransportProtocolCommon.processMessages((null):-1) 05-31 18:28:12.671: INFO/dalvikvm(589): at com.enterprisedt.net.j2ssh.transport.TransportProtocolCommon.startBinaryPacketProtocol((null):-1) 05-31 18:28:12.671: INFO/dalvikvm(589): at com.enterprisedt.net.j2ssh.transport.TransportProtocolCommon.run((null):-1) 05-31 18:28:12.671: INFO/dalvikvm(589): at java.lang.Thread.run(Thread.java:1096) 05-31 18:28:12.671: INFO/dalvikvm(589): "StreamFrameSender" prio=5 tid=27 TIMED_WAIT 05-31 18:28:12.671: INFO/dalvikvm(589): | group="main" sCount=1 dsCount=0 s=N obj=0x44750a60 self=0x3964d8 05-31 18:28:12.671: INFO/dalvikvm(589): | sysTid=603 nice=0 sched=0/0 cgrp=default handle=3761648 05-31 18:28:12.671: INFO/dalvikvm(589): at java.lang.Object.wait(Native Method) 05-31 18:28:12.671: INFO/dalvikvm(589): - waiting on <0x399478 (a com.corventis.gateway.ppp.StreamFrameSender) 05-31 18:28:12.671: INFO/dalvikvm(589): at java.lang.Object.wait(Object.java:326) 05-31 18:28:12.671: INFO/dalvikvm(589): at com.corventis.gateway.ppp.StreamFrameSender.run(StreamFrameSender.java:154) 05-31 18:28:12.671: INFO/dalvikvm(589): at com.corventis.gateway.util.MonitoredRunnable.run(MonitoredRunnable.java:41) 05-31 18:28:12.671: INFO/dalvikvm(589): at java.lang.Thread.run(Thread.java:1096) 05-31 18:28:12.671: INFO/dalvikvm(589): "SftpActiveWorker" prio=5 tid=25 TIMED_WAIT 05-31 18:28:12.671: INFO/dalvikvm(589): | group="main" sCount=1 dsCount=0 s=N obj=0x447522b0 self=0x398e00 05-31 18:28:12.671: INFO/dalvikvm(589): | sysTid=604 nice=0 sched=0/0 cgrp=default handle=3762704 05-31 18:28:12.671: INFO/dalvikvm(589): at java.lang.Object.wait(Native Method) 05-31 18:28:12.671: INFO/dalvikvm(589): - waiting on <0x3962d8 (a com.corventis.gateway.hostcommunicator.SftpActiveWorker) 05-31 18:28:12.671: INFO/dalvikvm(589): at java.lang.Object.wait(Object.java:326) 05-31 18:28:12.671: INFO/dalvikvm(589): at com.corventis.gateway.hostcommunicator.SftpActiveWorker.run(SftpActiveWorker.java:151) 05-31 18:28:12.671: INFO/dalvikvm(589): at com.corventis.gateway.util.MonitoredRunnable.run(MonitoredRunnable.java:41) 05-31 18:28:12.671: INFO/dalvikvm(589): at java.lang.Thread.run(Thread.java:1096) 05-31 18:28:12.671: INFO/dalvikvm(589): "Thread-12" prio=5 tid=23 NATIVE 05-31 18:28:12.671: INFO/dalvikvm(589): | group="main" sCount=1 dsCount=0 s=N obj=0x4474aca8 self=0x115690 05-31 18:28:12.671: INFO/dalvikvm(589): | sysTid=602 nice=0 sched=0/0 cgrp=default handle=878120 05-31 18:28:12.671: INFO/dalvikvm(589): at android.bluetooth.BluetoothSocket.acceptNative(Native Method) 05-31 18:28:12.681: INFO/dalvikvm(589): at android.bluetooth.BluetoothSocket.accept(BluetoothSocket.java:287) 05-31 18:28:12.681: INFO/dalvikvm(589): at android.bluetooth.BluetoothServerSocket.accept(BluetoothServerSocket.java:105) 05-31 18:28:12.681: INFO/dalvikvm(589): at android.bluetooth.BluetoothServerSocket.accept(BluetoothServerSocket.java:91) 05-31 18:28:12.681: INFO/dalvikvm(589): at com.corventis.gateway.bluetooth.BluetoothManager.openPort(BluetoothManager.java:215) 05-31 18:28:12.681: INFO/dalvikvm(589): at com.corventis.gateway.bluetooth.BluetoothManager.open(BluetoothManager.java:84) 05-31 18:28:12.681: INFO/dalvikvm(589): at com.corventis.gateway.patchcommunicator.PatchCommunicator.open(PatchCommunicator.java:123) 05-31 18:28:12.681: INFO/dalvikvm(589): at com.corventis.gateway.patchcommunicator.PatchCommunicatorRunnable.run(PatchCommunicatorRunnable.java:134) 05-31 18:28:12.681: INFO/dalvikvm(589): at java.lang.Thread.run(Thread.java:1096) 05-31 18:28:12.681: INFO/dalvikvm(589): "HfGatewayApplication" prio=5 tid=21 RUNNABLE 05-31 18:28:12.681: INFO/dalvikvm(589): | group="main" sCount=0 dsCount=0 s=N obj=0x4472d9b0 self=0x120928 05-31 18:28:12.681: INFO/dalvikvm(589): | sysTid=601 nice=0 sched=0/0 cgrp=default handle=1264672 05-31 18:28:12.681: INFO/dalvikvm(589): at com.jcraft.jzlib.Deflate.deflateInit2(Deflate.java:~1361) 05-31 18:28:12.681: INFO/dalvikvm(589): at com.jcraft.jzlib.Deflate.deflateInit(Deflate.java:1316) 05-31 18:28:12.681: INFO/dalvikvm(589): at com.jcraft.jzlib.ZStream.deflateInit(ZStream.java:127) 05-31 18:28:12.681: INFO/dalvikvm(589): at com.jcraft.jzlib.ZStream.deflateInit(ZStream.java:120) 05-31 18:28:12.681: INFO/dalvikvm(589): at com.jcraft.jzlib.ZOutputStream.(ZOutputStream.java:62) 05-31 18:28:12.681: INFO/dalvikvm(589): at com.corventis.gateway.zipfile.ZipStorer.addStream(ZipStorer.java:211) 05-31 18:28:12.681: INFO/dalvikvm(589): at com.corventis.gateway.zipfile.ZipStorer.createZip(ZipStorer.java:127) 05-31 18:28:12.681: INFO/dalvikvm(589): at com.corventis.gateway.hostcommunicator.HostCommunicator.scanAndCompress(HostCommunicator.java:453) 05-31 18:28:12.681: INFO/dalvikvm(589): at com.corventis.gateway.hostcommunicator.HostCommunicator.doWork(HostCommunicator.java:1434) 05-31 18:28:12.681: INFO/dalvikvm(589): at com.corventis.gateway.hf.HfGatewayApplication.doWork(HfGatewayApplication.java:621) 05-31 18:28:12.681: INFO/dalvikvm(589): at com.corventis.gateway.hf.HfGatewayApplication.run(HfGatewayApplication.java:546) 05-31 18:28:12.681: INFO/dalvikvm(589): at com.corventis.gateway.util.MonitoredRunnable.run(MonitoredRunnable.java:41) 05-31 18:28:12.681: INFO/dalvikvm(589): at java.lang.Thread.run(Thread.java:1096) 05-31 18:28:12.681: INFO/dalvikvm(589): "Thread-10" prio=5 tid=19 TIMED_WAIT 05-31 18:28:12.681: INFO/dalvikvm(589): | group="main" sCount=1 dsCount=0 s=N obj=0x447287f8 self=0x1451b8 05-31 18:28:12.681: INFO/dalvikvm(589): | sysTid=598 nice=0 sched=0/0 cgrp=default handle=1331920 05-31 18:28:12.681: INFO/dalvikvm(589): at java.lang.VMThread.sleep(Native Method) 05-31 18:28:12.681: INFO/dalvikvm(589): at java.lang.Thread.sleep(Thread.java:1306) 05-31 18:28:12.681: INFO/dalvikvm(589): at java.lang.Thread.sleep(Thread.java:1286) 05-31 18:28:12.681: INFO/dalvikvm(589): at com.corventis.gateway.util.Watchdog.run(Watchdog.java:167) 05-31 18:28:12.681: INFO/dalvikvm(589): at java.lang.Thread.run(Thread.java:1096) 05-31 18:28:12.681: INFO/dalvikvm(589): "Thread-9" prio=5 tid=17 RUNNABLE 05-31 18:28:12.681: INFO/dalvikvm(589): | group="main" sCount=1 dsCount=0 s=Y obj=0x44722c90 self=0x114e20 05-31 18:28:12.681: INFO/dalvikvm(589): | sysTid=597 nice=0 sched=0/0 cgrp=default handle=1200048 05-31 18:28:12.681: INFO/dalvikvm(589): at com.corventis.gateway.time.Time.currentTimeMillis(Time.java:~77) 05-31 18:28:12.681: INFO/dalvikvm(589): at com.corventis.gateway.patchcommunicator.PatchCommunicatorState$1.run(PatchCommunicatorState.java:27) 05-31 18:28:12.681: INFO/dalvikvm(589): "Thread-8" prio=5 tid=15 RUNNABLE 05-31 18:28:12.681: INFO/dalvikvm(589): | group="main" sCount=1 dsCount=0 s=Y obj=0x44722430 self=0x124dd0 05-31 18:28:12.681: INFO/dalvikvm(589): | sysTid=596 nice=0 sched=0/0 cgrp=default handle=1199848 05-31 18:28:12.681: INFO/dalvikvm(589): at com.corventis.gateway.time.Time.currentTimeMillis(Time.java:~80) 05-31 18:28:12.681: INFO/dalvikvm(589): at com.corventis.gateway.hostcommunicator.HostCommunicatorState$1.run(HostCommunicatorState.java:35) 05-31 18:28:12.681: INFO/dalvikvm(589): "Binder Thread #2" prio=5 tid=13 NATIVE 05-31 18:28:12.681: INFO/dalvikvm(589): | group="main" sCount=1 dsCount=0 s=N obj=0x4471ccc0 self=0x149b60 05-31 18:28:12.681: INFO/dalvikvm(589): | sysTid=595 nice=0 sched=0/0 cgrp=default handle=1317992 05-31 18:28:12.681: INFO/dalvikvm(589): at dalvik.system.NativeStart.run(Native Method) 05-31 18:28:12.681: INFO/dalvikvm(589): "Binder Thread #1" prio=5 tid=11 NATIVE 05-31 18:28:12.681: INFO/dalvikvm(589): | group="main" sCount=1 dsCount=0 s=N obj=0x447159a8 self=0x123298 05-31 18:28:12.681: INFO/dalvikvm(589): | sysTid=594 nice=0 sched=0/0 cgrp=default handle=1164896 05-31 18:28:12.681: INFO/dalvikvm(589): at dalvik.system.NativeStart.run(Native Method) 05-31 18:28:12.691: INFO/dalvikvm(589): "JDWP" daemon prio=5 tid=9 VMWAIT 05-31 18:28:12.691: INFO/dalvikvm(589): | group="system" sCount=1 dsCount=0 s=N obj=0x4470f2a0 self=0x141a90 05-31 18:28:12.691: INFO/dalvikvm(589): | sysTid=593 nice=0 sched=0/0 cgrp=default handle=1316864 05-31 18:28:12.691: INFO/dalvikvm(589): at dalvik.system.NativeStart.run(Native Method) 05-31 18:28:12.691: INFO/dalvikvm(589): "Signal Catcher" daemon prio=5 tid=7 VMWAIT 05-31 18:28:12.691: INFO/dalvikvm(589): | group="system" sCount=1 dsCount=0 s=N obj=0x4470f1e8 self=0x124970 05-31 18:28:12.691: INFO/dalvikvm(589): | sysTid=592 nice=0 sched=0/0 cgrp=default handle=1316800 05-31 18:28:12.691: INFO/dalvikvm(589): at dalvik.system.NativeStart.run(Native Method) 05-31 18:28:12.691: INFO/dalvikvm(589): "HeapWorker" daemon prio=5 tid=5 MONITOR 05-31 18:28:12.691: INFO/dalvikvm(589): | group="system" sCount=1 dsCount=0 s=N obj=0x431b4550 self=0x141670 05-31 18:28:12.691: INFO/dalvikvm(589): | sysTid=591 nice=0 sched=0/0 cgrp=default handle=1316400 05-31 18:28:12.691: INFO/dalvikvm(589): at com.enterprisedt.net.j2ssh.sftp.SftpSubsystemClient.closeHandle((null):~-1) 05-31 18:28:12.691: INFO/dalvikvm(589): at com.enterprisedt.net.j2ssh.sftp.SftpSubsystemClient.closeFile((null):-1) 05-31 18:28:12.691: INFO/dalvikvm(589): at com.enterprisedt.net.j2ssh.sftp.SftpFile.close((null):-1) 05-31 18:28:12.691: INFO/dalvikvm(589): at com.enterprisedt.net.j2ssh.sftp.SftpFileInputStream.close((null):-1) 05-31 18:28:12.691: INFO/dalvikvm(589): at com.enterprisedt.net.j2ssh.sftp.SftpFileInputStream.finalize((null):-1) 05-31 18:28:12.691: INFO/dalvikvm(589): at dalvik.system.NativeStart.run(Native Method) 05-31 18:28:12.691: ERROR/dalvikvm(589): VM aborting 05-31 18:28:12.801: INFO/DEBUG(49): * ** * ** * ** * ** * ** * 05-31 18:28:12.801: INFO/DEBUG(49): Build fingerprint: 'google/passion/passion/mahimahi:2.1-update1/ERE27/24178:user/release-keys' 05-31 18:28:12.801: INFO/DEBUG(49): pid: 589, tid: 601 com.corventis.gateway.hf <<< 05-31 18:28:12.801: INFO/DEBUG(49): signal 11 (SIGSEGV), fault addr deadd00d 05-31 18:28:12.801: INFO/DEBUG(49): r0 00000026 r1 afe13329 r2 afe13329 r3 00000000 05-31 18:28:12.801: INFO/DEBUG(49): r4 ad081f50 r5 400091e8 r6 009b3a6a r7 00000000 05-31 18:28:12.801: INFO/DEBUG(49): r8 000002e8 r9 ad082ba0 10 ad082ba0 fp 00000000 05-31 18:28:12.801: INFO/DEBUG(49): ip deadd00d sp 46937c58 lr afe14373 pc ad035b4c cpsr 20000030 05-31 18:28:12.851: INFO/DEBUG(49): #00 pc 00035b4c /system/lib/libdvm.so 05-31 18:28:12.861: INFO/DEBUG(49): #01 pc 00044d7c /system/lib/libdvm.so 05-31 18:28:12.861: INFO/DEBUG(49): #02 pc 000162e4 /system/lib/libdvm.so 05-31 18:28:12.861: INFO/DEBUG(49): #03 pc 00016b60 /system/lib/libdvm.so 05-31 18:28:12.861: INFO/DEBUG(49): #04 pc 00016ce0 /system/lib/libdvm.so 05-31 18:28:12.861: INFO/DEBUG(49): #05 pc 00057b64 /system/lib/libdvm.so 05-31 18:28:12.861: INFO/DEBUG(49): #06 pc 00057cc0 /system/lib/libdvm.so 05-31 18:28:12.871: INFO/DEBUG(49): #07 pc 00057dd4 /system/lib/libdvm.so 05-31 18:28:12.871: INFO/DEBUG(49): #08 pc 00012ffc /system/lib/libdvm.so 05-31 18:28:12.871: INFO/DEBUG(49): #09 pc 00019338 /system/lib/libdvm.so 05-31 18:28:12.871: INFO/DEBUG(49): #10 pc 00018804 /system/lib/libdvm.so 05-31 18:28:12.871: INFO/DEBUG(49): #11 pc 0004eed0 /system/lib/libdvm.so 05-31 18:28:12.871: INFO/DEBUG(49): #12 pc 0004eef8 /system/lib/libdvm.so 05-31 18:28:12.871: INFO/DEBUG(49): #13 pc 000426d4 /system/lib/libdvm.so 05-31 18:28:12.881: INFO/DEBUG(49): #14 pc 0000fd74 /system/lib/libc.so 05-31 18:28:12.881: INFO/DEBUG(49): #15 pc 0000f840 /system/lib/libc.so 05-31 18:28:12.881: INFO/DEBUG(49): code around pc: 05-31 18:28:12.881: INFO/DEBUG(49): ad035b3c 58234808 b1036b9b f8df4798 2026c01c 05-31 18:28:12.881: INFO/DEBUG(49): ad035b4c 0000f88c ef52f7d8 0004c428 fffe631c 05-31 18:28:12.881: INFO/DEBUG(49): ad035b5c fffe94f4 000002f8 deadd00d f8dfb40e 05-31 18:28:12.881: INFO/DEBUG(49): code around lr: 05-31 18:28:12.881: INFO/DEBUG(49): afe14360 686768a5 f9b5e008 b120000c 46289201 05-31 18:28:12.881: INFO/DEBUG(49): afe14370 9a014790 35544306 37fff117 6824d5f3 05-31 18:28:12.881: INFO/DEBUG(49): afe14380 d1ed2c00 bdfe4630 00026ab0 000000b4 05-31 18:28:12.881: INFO/DEBUG(49): stack: 05-31 18:28:12.881: INFO/DEBUG(49): 46937c18 00000015 05-31 18:28:12.881: INFO/DEBUG(49): 46937c1c afe13359 /system/lib/libc.so 05-31 18:28:12.881: INFO/DEBUG(49): 46937c20 afe3b02c /system/lib/libc.so 05-31 18:28:12.891: INFO/DEBUG(49): 46937c24 afe3afd8 /system/lib/libc.so 05-31 18:28:12.891: INFO/DEBUG(49): 46937c28 00000000 05-31 18:28:12.891: INFO/DEBUG(49): 46937c2c afe14373 /system/lib/libc.so 05-31 18:28:12.891: INFO/DEBUG(49): 46937c30 afe13329 /system/lib/libc.so 05-31 18:28:12.891: INFO/DEBUG(49): 46937c34 afe13329 /system/lib/libc.so 05-31 18:28:12.891: INFO/DEBUG(49): 46937c38 afe13380 /system/lib/libc.so 05-31 18:28:12.891: INFO/DEBUG(49): 46937c3c ad081f50 /system/lib/libdvm.so 05-31 18:28:12.891: INFO/DEBUG(49): 46937c40 400091e8 /dev/ashmem/mspace/dalvik-heap/zygote/0 (deleted) 05-31 18:28:12.891: INFO/DEBUG(49): 46937c44 009b3a6a 05-31 18:28:12.891: INFO/DEBUG(49): 46937c48 00000000 05-31 18:28:12.891: INFO/DEBUG(49): 46937c4c afe1338d /system/lib/libc.so 05-31 18:28:12.891: INFO/DEBUG(49): 46937c50 df002777 05-31 18:28:12.891: INFO/DEBUG(49): 46937c54 e3a070ad 05-31 18:28:12.891: INFO/DEBUG(49): #00 46937c58 ad06f573 /system/lib/libdvm.so 05-31 18:28:12.891: INFO/DEBUG(49): 46937c5c ad044d81 /system/lib/libdvm.so 05-31 18:28:12.891: INFO/DEBUG(49): #01 46937c60 000027bd 05-31 18:28:12.891: INFO/DEBUG(49): 46937c64 00000000 05-31 18:28:12.891: INFO/DEBUG(49): 46937c68 463b6ab4 /data/dalvik-cache/data@[email protected]@classes.dex 05-31 18:28:12.891: INFO/DEBUG(49): 46937c6c 463d1ecf /data/dalvik-cache/data@[email protected]@classes.dex 05-31 18:28:12.891: INFO/DEBUG(49): 46937c70 00140450 [heap] 05-31 18:28:12.891: INFO/DEBUG(49): 46937c74 ad041d2b /system/lib/libdvm.so 05-31 18:28:12.891: INFO/DEBUG(49): 46937c78 ad082f2c /system/lib/libdvm.so 05-31 18:28:12.891: INFO/DEBUG(49): 46937c7c ad06826c /system/lib/libdvm.so 05-31 18:28:12.891: INFO/DEBUG(49): 46937c80 00140450 [heap] 05-31 18:28:12.891: INFO/DEBUG(49): 46937c84 00000000 05-31 18:28:12.891: INFO/DEBUG(49): 46937c88 000002f8 05-31 18:28:12.891: INFO/DEBUG(49): 46937c8c 400091e8 /dev/ashmem/mspace/dalvik-heap/zygote/0 (deleted) 05-31 18:28:12.891: INFO/DEBUG(49): 46937c90 ad081f50 /system/lib/libdvm.so 05-31 18:28:12.891: INFO/DEBUG(49): 46937c94 000002f8 05-31 18:28:12.891: INFO/DEBUG(49): 46937c98 00002710 05-31 18:28:12.891: INFO/DEBUG(49): 46937c9c ad0162e8 /system/lib/libdvm.so Thanks & Regards,

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• System locking up with suspicious messages about hard disk

  - by Chris Conway

  My system has started behaving strangely, intermittently locking up. I see messages like the following in syslog: Nov 18 22:22:00 claypool kernel: [ 3428.078156] ata3.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 Nov 18 22:22:00 claypool kernel: [ 3428.078163] ata3.00: irq_stat 0x40000000 Nov 18 22:22:00 claypool kernel: [ 3428.078167] sr 2:0:0:0: CDB: Test Unit Ready: 00 00 00 00 00 00 Nov 18 22:22:00 claypool kernel: [ 3428.078182] ata3.00: cmd a0/00:00:00:00:00/00:00:00:00:00/a0 tag 0 Nov 18 22:22:00 claypool kernel: [ 3428.078184] res 50/00:03:00:00:00/00:00:00:00:00/a0 Emask 0x1 (device error) Nov 18 22:22:00 claypool kernel: [ 3428.078188] ata3.00: status: { DRDY } Nov 18 22:22:00 claypool kernel: [ 3428.080887] ata3.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 Nov 18 22:22:00 claypool kernel: [ 3428.080890] ata3.00: irq_stat 0x40000000 Nov 18 22:22:00 claypool kernel: [ 3428.080893] sr 2:0:0:0: CDB: Test Unit Ready: 00 00 00 00 00 00 Nov 18 22:22:00 claypool kernel: [ 3428.080905] ata3.00: cmd a0/00:00:00:00:00/00:00:00:00:00/a0 tag 0 Nov 18 22:22:00 claypool kernel: [ 3428.080906] res 50/00:03:00:00:00/00:00:00:00:00/a0 Emask 0x1 (device error) Nov 18 22:22:00 claypool kernel: [ 3428.080910] ata3.00: status: { DRDY } And then this: Nov 18 23:13:56 claypool kernel: [ 6544.000798] ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 frozen Nov 18 23:13:56 claypool kernel: [ 6544.000804] ata1.00: failed command: FLUSH CACHE EXT Nov 18 23:13:56 claypool kernel: [ 6544.000814] ata1.00: cmd ea/00:00:00:00:00/00:00:00:00:00/a0 tag 0 Nov 18 23:13:56 claypool kernel: [ 6544.000815] res 40/00:00:00:4f:c2/00:00:00:00:00/40 Emask 0x4 (timeout) Nov 18 23:13:56 claypool kernel: [ 6544.000819] ata1.00: status: { DRDY } Nov 18 23:13:56 claypool kernel: [ 6544.000825] ata1: hard resetting link Nov 18 23:14:01 claypool kernel: [ 6549.360324] ata1: link is slow to respond, please be patient (ready=0) Nov 18 23:14:06 claypool kernel: [ 6554.008091] ata1: COMRESET failed (errno=-16) Nov 18 23:14:06 claypool kernel: [ 6554.008103] ata1: hard resetting link Nov 18 23:14:11 claypool kernel: [ 6559.372246] ata1: link is slow to respond, please be patient (ready=0) Nov 18 23:14:16 claypool kernel: [ 6564.020228] ata1: COMRESET failed (errno=-16) Nov 18 23:14:16 claypool kernel: [ 6564.020235] ata1: hard resetting link Nov 18 23:14:21 claypool kernel: [ 6569.380109] ata1: link is slow to respond, please be patient (ready=0) Nov 18 23:14:31 claypool kernel: [ 6579.460243] ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 300) Nov 18 23:14:31 claypool kernel: [ 6579.486595] ata1.00: configured for UDMA/133 Nov 18 23:14:31 claypool kernel: [ 6579.486601] ata1.00: retrying FLUSH 0xea Emask 0x4 Nov 18 23:14:31 claypool kernel: [ 6579.486939] ata1.00: device reported invalid CHS sector 0 Nov 18 23:14:31 claypool kernel: [ 6579.486952] ata1: EH complete Nov 18 23:17:01 claypool CRON[3910]: (root) CMD ( cd / && run-parts --report /etc/cron.hourly) Nov 18 23:17:01 claypool CRON[3908]: (CRON) error (grandchild #3910 failed with exit status 1) Nov 18 23:17:01 claypool postfix/sendmail[3925]: fatal: open /etc/postfix/main.cf: No such file or directory Nov 18 23:17:01 claypool CRON[3908]: (root) MAIL (mailed 1 byte of output; but got status 0x004b, #012) Nov 18 23:39:01 claypool CRON[4200]: (root) CMD ( [ -x /usr/lib/php5/maxlifetime ] && [ -d /var/lib/php5 ] && find /var/lib/php5/ -type f -cmin +$(/usr/lib/php5/maxlifetime) -print0 | xargs -n 200 -r -0 rm) There are no messages marked after 23:39. When I next tried to use the machine, it would not return from the screensaver (blank screen), nor switch to another terminal, and I had to hard reboot it. [UPDATE] The output of smartctl is here. I had trouble getting this, because / is being mounted read-only (?!), which prevents most applications from running. Also, it may not be related, but I have the following worrying messages in dmesg: [ 10.084596] k8temp 0000:00:18.3: Temperature readouts might be wrong - check erratum #141 [ 10.098477] i2c i2c-0: nForce2 SMBus adapter at 0x600 [ 10.098483] ACPI: resource nForce2_smbus [io 0x0700-0x073f] conflicts with ACPI region SM00 [??? 0x00000700-0x0000073f flags 0x30] [ 10.098486] ACPI: This conflict may cause random problems and system instability [ 10.098487] ACPI: If an ACPI driver is available for this device, you should use it instead of the native driver [ 10.098509] i2c i2c-1: nForce2 SMBus adapter at 0x700 [ 10.112570] Linux agpgart interface v0.103 [ 10.155329] atk: Resources not safely usable due to acpi_enforce_resources kernel parameter [ 10.161506] it87: Found IT8712F chip at 0x290, revision 8 [ 10.161517] it87: VID is disabled (pins used for GPIO) [ 10.161527] it87: in3 is VCC (+5V) [ 10.161528] it87: in7 is VCCH (+5V Stand-By) [ 10.161560] ACPI: resource it87 [io 0x0295-0x0296] conflicts with ACPI region ECRE [??? 0x00000290-0x000002af flags 0x45] [ 10.161562] ACPI: This conflict may cause random problems and system instability [ 10.161564] ACPI: If an ACPI driver is available for this device, you should use it instead of the native driver [UPDATE 2] I swapped in a new SATA cable, per Phil's suggestion. The current output of smartctl is here, if it helps. [UPDATE 3] I don't think the cable fixed it. The system hasn't locked up yet, but my media player crashed a few minutes ago and I have the following in the syslog: Nov 20 16:07:17 claypool kernel: [ 2294.400033] ata1: link is slow to respond, please be patient (ready=0) Nov 20 16:07:47 claypool kernel: [ 2324.084581] ata1: COMRESET failed (errno=-16) Nov 20 16:07:47 claypool kernel: [ 2324.084588] ata1: limiting SATA link speed to 1.5 Gbps Nov 20 16:07:47 claypool kernel: [ 2324.084592] ata1: hard resetting link I get the following response from smartctl: $ sudo smartctl -a /dev/sda [sudo] password for chris: sudo: Can't open /var/lib/sudo/chris/0: Read-only file system smartctl 5.40 2010-03-16 r3077 [i686-pc-linux-gnu] (local build) Copyright (C) 2002-10 by Bruce Allen, http://smartmontools.sourceforge.net Device: /0:0:0:0 Version: scsiModePageOffset: response length too short, resp_len=47 offset=50 bd_len=46 >> Terminate command early due to bad response to IEC mode page A mandatory SMART command failed: exiting. To continue, add one or more '-T permissive' options.

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