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• Optimize Windows file access over network

  - by Djizeus

  At my company I frequently need to access shared files over a Windows network. These files are located on the other side of the planet, so I guess the file share goes through some kind of VPN over Internet, but I don't control this and it is supposed to be "transparent" for me. However it is extremely slow. Displaying the content of a directory in the file explorer takes about 10s. Even if over the Internet, I did not expect that retrieving a list of file names would be that long. Are there any settings to optimize this from my Windows XP workstation, or is it mostly related to the way the network is configured? The only thing I have found so far is to cache all file names, while by default only short file names are cached (http://support.microsoft.com/kb/843418).

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• Is a memory upgrade a viable option to fix performance issues? [closed]

  - by ratchet freak

  I'm currently seeing my PC getting bogged down by Firefox 11.0 alone with only one hundred tabs open. Resulting in a memory use of over 530M , VM size of over 800M and an insane amount of page faults (easily reaching 100 million over the course of the day). The PF delta during normal operation easily reaches 7k with peaks to 15k sometimes reaching over 20k. This leads to a (real) deterioration to response time when switching, opening and closing tabs, opening menus, typing, ... My question is: Am I right in assuming that plugging in more RAM (either adding 2x1GB or replacing the existing RAM with 2x2GB or 4x1GB) will solve this problem? My specs: Windows XP Home Edition SP3 (32 bit) Intel Core Duo 2,4 GHz 2x512MB RAM 800MHz DDR2 (dual channel) 4MB unified cache 320GB HDD Intel G33 (X3100) onboard graphics (no graphics card but PCI express x16 slot is available)

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• Disk controller speed responsible for slow write speeds?

  - by vizvayu

  I have question. I'm using ESXi 4.0U1 in an IBM x3200M2 with an integrated LSI 1064e RAID controller, without any kind of cache. I have 3 250GB HOT-SWAP SATA HDs configured in RAID1E (IME). ESXi works fine, read speed are quite OK, but write speeds are incredible slow, never more than 8MB/s, and this is the best case scenario, benchmarking with iozone streaming writes, using a VMWare Paravirtual controller and with only this VM active, no swapping of any kind (total vm memory reserved). Already wrote to IBM but I don't have any kind of pay support so they didn't even answered, so I'm just wondering... anybody has any experience with a similar setup? I just want to be sure this is hardware related and can't be fixed with some kind of config option, because I'm thinking on buying a new RAID controller (Adaptec 2405 looks nice). Thanks again!

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• Nginx issue with two web nodes

  - by HTF

  I'm running Wordpress website with Nginx and Memcached. I have simple DNS round robin balancing with A records pointing to both web servers. I've noticed the following entries in both web servers access logs: 192.168.1.10 example.com - [07/Jun/2012:22:43:58 +0100] "-" 400 0 "-" "-" - 0.000 192.168.1.10 example.com - [07/Jun/2012:22:43:58 +0100] "-" 400 0 "-" "-" - 0.000 192.168.1.10 example.com - [07/Jun/2012:22:43:58 +0100] "-" 400 0 "-" "-" - 0.000 192.168.1.10 example.com - [07/Jun/2012:22:43:58 +0100] "-" 400 0 "-" "-" - 0.000 192.168.1.10 example.com - [07/Jun/2012:22:43:58 +0100] "-" 400 0 "-" "-" - 0.000 I've configured W3 Total cache plugin for Wordpress - pointing to loopback address (127.0.0.1:11211) on each Wordpress installation. Is this because the webserver is trying to access content that is cached on the other web server? Shall I add IPs to W3 plugin of both web servers on each website (192.168.1.:11211, 192.168.1.2:11211)? I'm not sure if this related to Memcached or maybe some configuration issue on the server itself? Regards

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• Very frequent "Server not found" messages

  - by Village

  Recently, while browsing and clicking or typing an address, I get: "Server not found", "Connection was reset", or a half-loaded page. Usually the page loads instantly after clicking reload, but this means I must reload on every page. Images on one site, but stored at a different server don't load until reloading for a second time. Clicking "submit" on many sites frequently doesn't work unless I reload many times. Sometimes sites load, but without colors and formating, appearing as if they would in Lynx. This seems to happen with every Web site. My Internet service claims everything on their end is fine. This happened a day after running an update in aptitude. I have not updated any hardware. I have tried clearing Iceweasel's cache. I do not have any router or other equipment. What could be going on? How can I troubleshoot this? PPPoE connection, Iceweasel 3.5.16, Debian 6

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• Terminal Server 2003 Login Issue - Insufficient system resources exist to complete the requested ser

  - by LP

  Afternoon. We have three identical terminal servers running Windows Server 2003 SP2, on these servers there are about 250 concurrent users logged on. We're running Roaming Profiles on a central server running Active Directory which cache the profiles locally on each terminal server as well. When one, and just that one, user tries to login she gets this error message (roughly translated from Swedish): "You could not be logged in becouse your principle could not be registered. Check that you're connected to the network or ask your administrator Insufficient system resources exist to complete the requested service." Anyone have an idea about this? I'm stumped ... Best Regards LP

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• Java Applets fail to launch in Windows 7 64bit

  - by Steve

  Hi can you help? I'm having great trouble launching Java applets using Windows 7 64 bit. I have the 32 bit version of Java installed (as recommended, for use with 32 bit browsers). When I click on an Java applet to open it the Java logo shows with a circular progress bar, but the process goes no further, just the progress bar going round and round. There are no error messages. The computer is a few months old and Java has never worked properly. I've tried with both IE9 and Chrome, followed the suggested fixes, uninstall then reinstall, check certain browser settings (all were in order), check Java control panel settings (again all was in order) delete the internet cache etc, tried 32bit & 64bit Java side by side. All to no avail. I'm baffled Is there anything else to try, or do I have to accept a computer without Java (Very inconvenient!) Thanks

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• Why does yum index get corrupted?

  - by TomOnTime

  Occasionally yum's cache gets corrupted and we see errors like this: error: db3 error(-30974) from dbenv->failchk: DB_RUNRECOVERY: Fatal error, run database recovery error: cannot open Packages index using db3 - (-30974) error: cannot open Packages database in /var/lib/rpm The workaround is rm -f /var/lib/rpm/__db* and then the next "yum" command regenerates the data. My question is: what is likely to be causing this? Is there some common task that ignores locks or has other problem that causes this? We have hundreds of CentOS machines and there is no pattern to which see this problem. It could be a "one in a million" issue, which at large scale is seen often. NOTE: I realize this is a very "open ended" question, but if an answer finds the cause, I will go back and turn the question into something more canonical that directly relates to the specific issue.

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• Applications getting killed automatically

  - by nebi

  I am running httperf client on my m/c and after few seconds it is getting killed. dmesg shows: The command is: httperf --hog --client=0/1 --server=39.0.0.2 --port=80 --uri=/50kb --rate=20000 --send-buffer=4096 --recv-buffer=16384 --num-conns=6000000 --num-calls=1 Although I had done this test no. of times but never faced this error any time. From last two days I am observing this. My Ubuntu version is ubuntu 10.04. and httperf version is httperf-0.9.0 [ 2997.180620] Out of memory: kill process 7977 (apache2) score 70532 or a child [ 2997.180632] Killed process 7977 (apache2) [ 2997.184837] Out of memory: kill process 7971 (rsyslogd) score 8702 or a child [ 2997.184844] Killed process 7971 (rsyslogd) [ 2997.188823] Out of memory: kill process 7978 (apache2) score 1354 or a child [ 2997.188829] Killed process 7978 (apache2) [ 2997.192817] Out of memory: kill process 7973 (atd) score 561 or a child [ 2997.192822] Killed process 7973 (atd) [ 2997.196805] Out of memory: kill process 8102 (httperf) score 471 or a child [ 2997.196811] Killed process 8102 (httperf) Output of free command: total used free shared buffers cached Mem: 3862768 163000 3699768 0 2384 13068 -/+ buffers/cache: 147548 3715220 Swap: 3905528 0 3905528

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• One subdomain is not working

  - by BFTrick

  Hello there, My main domain works just fine - www.example.com and a subdomain set up by another developer works as well - sub1.example.com. But when I try to set another subdomain up I go through the process everything seems to work. The software creates the default files where the subdomain files should go. But when I try to browse there it doesn't work. My host uses Plesk to do all of the hosting stuff. What do you think the problem is? I doubt it is some sort of cache issue because I had problems on my phone which I tried after problems on the pc. Maybe for some reason Plesk needs time to set this up? I have used Cpanel before and that works instantly.

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• Facing difficulty with migrating from wordpress to Drupal

  - by rakibtg

  One of my blog was build of Wordpress but now i want to use Drupal as the CMS of my Blog. To do so I have deleted all the Wordpress files from my server and the Database and MySQL user which are associated with wordpress blog and uploaded the Drupal files in my server directory where the wordpress files were. But, when i have opened the blog it shows the Wordpress blog! though its been deleted and their should be the Drupal Installation interface. So, i have re-checked my server directories and database, there is not wordpress files and wp database all are deleted, there is only the drupal files, but when i go to the blog to install drupal there is still the Wordpress blog, I have checked the blog in many web browsers and there is not cache memory problem. My hosting server is linux based. can't understand what to do? Any idea? Thanks

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• VMware player unity with ubuntu 11.10 guest on W7 host - empty applications start menu

  - by lexalizer

  I am trying to run Ubuntu 11.10 as a guest on Windows 7. When I enter into unity mode, the menu for the guest os, next to the Windows start menu is empty. I have searched around the web for a fix for this, but there doesn't seem to be anything that works. I have tried restarting the guest os several times, I am running VMware player as an admin, but the guest start menu in unity mode is still empty. I have tried clearing the VM cache. I have installed all the Ubuntu updates and the VMware tools. Has anyone had this problem?

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• Storage sizing for virtual machines

  - by njo

  I am currently doing research to determine the consolidation ratio my company could expect should we start using a virtualization platform. I find myself continually running into a dead end when researching how to translate observed performance (weeks of perfmon data) to hdd array requirements for a virtualization server. I am familiar with the concept of IOPs, but they seem to be an overly simplistic measurement that fails to take into account cache, write combining, etc. Is there a seminal work on storage array performance analysis that I'm missing? This seems like an area where hearsay and 'black magic' have taken over for cold, hard fact.

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• Netbeans automatically changes the file owner when updating files

  - by Alon_A

  We use Netbeans IDE 7.2 to edit our PHP files. In the Run Configuration it is configured as Remote Web Site to automatically save the changes on our web server (Centos OS 6.3). The problem is that every time it is updating the files the owner of the file is changed from apache:apache to userThatUploadedTheFile:users. This causes us problems with SOAP cache files that are configured with apache:apache ownership, and we need to manually chownit back to apache:apache. We've checked the "Preserve Remote File Permissions" checkbox, so the permissions are not changed, only the owner. Is there any solution to preserve the ownership ?

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• All browsers hang on windows 7 in tab says 'Waiting for...' need restart

  - by Lakshmila

  I'm having a frustrating problem with browsers on OS windows 7 home premium. IE 10: My web browsing works ok for a while and then pages freeze and tab at top says "Waiting for ...' and never loads. Strangely I can still get to Google search results but if I click anything it freezes. Chrome freezes too and says 'The page has become unresponsive ...kill page' Safari stops also. I have tried clearing cookies, cache, turning off Bitdefender firewall and nothing apart from a restart fixes it. consequently I am forced to restart my computer several times a day to stop this browser hang. I have no idea what could be causing this ..any help greatly appreciated.

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• Do I really need to reboot for AD changes to be applied?

  - by stimms

  Every time I request a permission change the IT group at my company instructs me to wait 20 minutes and reboot the computer. I cannot believe that in this day and age you still need to reboot the computer to clear whatever cache stores the permissions locally. It feels like something out of the NT 4 days. Do you actually still need to reboot the computer? Is a logout/login sufficient? Is there still a long time(20 minutes) for the changes to propagate through the AD tree?

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• Can I rent exclusive time on a powerful server running linux? [closed]

  - by Mark Borgerding

  My company is involved in a proposal that requires speed estimates of our software on a server with the latest & greatest processors. This is not the first time we've been in this situation. The servers themselves are too expensive to buy a new one every time, so we end up extrapolating from what we have. There are so many variables: processor generation & speed, memory speed, memory channels, cache configurations; it makes extrapolation difficult and error-prone. Is there a business that rents time on the newest servers? At least part of the time we'd need exclusive access to an otherwise quiescent system either via ssh shell access or unattended batch jobs. I am not looking for general cloud computing services. I don't need much time on the server, but it needs to be exclusive. And the server needs to be pretty cutting edge for a solid basis of estimate.

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• Problems getting auditd set up on my server

  - by Tola Odejayi

  I'm trying to figure out which processes are deleting files from a specific directory, so I want to set up and run auditd on my system. I've set up the following rule in audit.rules: -w S unlink -S truncate -S ftruncate -a exit,always -k cache_deletion -w /home/myfolder/cache Then I type this to start the audit daemon: auditctl -R /etc/audit/audit.rules -e 1 But I get this error message: Error - nested rule files not supported Does anyone know what I am doing wrong here, and how I can resolve this? Also, what do I have to do to get the daemon running at startup?

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• Auto-detect proxy settings for the network

  - by user42891

  Firefox browser contains network settings under Tools--Options--Advanced--Network--Settings and there is an option to do auto detect proxy settings, how should I enable this? Currently this is manually configured and its possible for users to bypass and use the internet directly. We use a variety of browsers (firefox, IE, chrome, safari, opera) on win xp, win 2003, win vista machines. How should I enable this so that the end user cannot manipulate the settings on his browser to by pass security. I have configured a squid cache proxy server for this purpose.

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• Squid gives always tcp_miss reverse proxy

  - by JaakL

  I added installed latest squid3 in front of apache as reverse proxy. The problem is that it gives always tcp_miss, in fact I have not yet found a single TCP_HIT message in the log file, and most of the content is static. Relevant config values for cache_dir and refresh_pattern are default ones, directory /var/spool/squid3 exists and has some files/folders. I have 100+G free storage, but reconfigure gives warning "WARNING cache_mem is larger than total disk cache space!", which does not make any sense to me. I have googled a lot and seen with similar problems, but none of them has helped.

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• Minimal backup for Windows 7 system recovery [migrated]

  - by JIm

  There might not be an answer to this, but for a home Win7 system, what files/directories must be backed up to recover after a windows crash? I can reinstall software, and I keep data files elsewhere. When I use acronis home backup software to backup my "critical" files it seems to choose the entire partition. Updates are mostly browser cache files and the like. Or, after a crash, should I just reinstall windows. I dread the hours of windows updates that would require. Thanks.

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• Need data on disk drive management by OS: getting base I/O unit size, “sync” option, Direct Memory A

  - by Richard T

  Hello All, I want to ensure I have done all I can to configure a system's disks for serious database use. The three areas I know of (any others?) to be concerned about are: I/O size: the database engine and disk's native size should either match, or the database's native I/O size should be a multiple of the disk's native I/O size. Disks that are capable of Direct Memory Access (eg. IDE) should be configured for it. When a disk says it has written data persistently, it must be so! No keeping it in cache and lying about it. I have been looking for information on how to ensure these are so for CENTOS and Ubuntu, but can't seem to find anything at all! I want to be able to check these things and change them if needed. Any and all input appreciated.

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• uploading files greater than 1MB = connection resets

  - by Legit

  I'm using nginx on the frontend as "proxy cache" and apache on the backend, i've set my PHP settings to the following: error_log = /var/www/site1/php_error.log error_reporting = 22527 file_uploads = On log_errors = On max_execution_time = 0 max_file_uploads = 20 max_input_time = -1 memory_limit = 512M post_max_size = 0 upload_max_filesize = 1000M What's the problem? Uploading files less than 1MB is successful but anything greater than that, Google Chrome outputs: Error 101 (net::ERR_CONNECTION_RESET): The connection was reset. I already checked for the error log file but it doesn't exist in the directory. I also checked /var/log/httpd/error_log but no uploading related problems. I don't know anything else which might have caused the problem so I have reached out for your helping hand. Thanks!

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• Solr performance (tomcat) - High load

  - by Ward Loockx

  I'm relatively new to solr. I have a production site running on a VPS, but now I'm having serious load issues. I don't know where to start in order to get the load down... VPS specs (linode.com 512) 512 MB RAM 4 CPU (1x priority) Looks like my solr server (tomcat) is using a lot of CPU power You can find my solrconfig.xml on http://pastebin.com/qdfi8Med and my schema.xml on http://pastebin.com/rRusDP8b I've tried to increaese the cache size, but this didn't do anything on the load. You can see the stats page below. EDIT - Because the screenshot was unclear, I took smaller screenshots if what (I think) is important. Dismax query handler stats Caches stats Thanks for the help!

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• How many xml http requests is too much for a pc to handle?

  - by Uri

  I'm running mediawiki on an apache on a regular pc running vista (don't know the specific specs, but I'm guessing at least duo core 2 2 giga hertz processor, broadband connection (500 kb/s at least, probably 1 mega). I want to use the MediaWiki api to send a lot of requests to this server. Most of the time the requests will be sent through LAN (but sometimes through the internet). I'm talking thousands of requests every few seconds at worst case. (A lot of these requests may repeat themselves, I guess some sort of cache would help) Will the server handle this, or do I need a stronger/dedicated computer? (I'm not looking for specific yes/no, but just want to get an idea as to what configuration of computer will support how many request per second) Thanks

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