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• High Sqlservr.exe Memory Usage

  - by user18576

  I have a problem with sqlservr.exe (version 2008). It use a more memory. I checked on windows taskbar manager, sqlservr.exe usage ( Mem usage - 8GB Ram). I dont know how can I fix it.Got the following metrics of the server using Perfmon: SQLServer:Buffer Manager Buffer cache hit ratio 13 SQLServer:Buffer Manager Page lookups/sec 46026128096 SQLServer:Buffer Manager Free pages 129295 SQLServer:Buffer Manager Total pages 997309 SQLServer:Buffer Manager Target pages 1053560 SQLServer:Buffer Manager Database pages 484117 SQLServer:Buffer Manager Reserved pages 0 SQLServer:Buffer Manager Stolen pages 383897 SQLServer:Buffer Manager Lazy writes/sec 384369 SQLServer:Buffer Manager Readahead pages/sec 69315446 SQLServer:Buffer Manager Page reads/sec 71280353 SQLServer:Buffer Manager Page writes/sec 12408371 SQLServer:Buffer Manager Checkpoint pages/sec 7053801 SQLServer:Buffer Manager Page life expectancy 735262 SQLServer:General Statistics Active Temp Tables 161 SQLServer:General Statistics Temp Tables Creation Rate 3131845 SQLServer:General Statistics Logins/sec 2336011 SQLServer:General Statistics Logouts/sec 2335984 SQLServer:General Statistics User Connections 27 SQLServer:General Statistics Transactions 0 SQLServer:Access Methods Full Scans/sec 34422821 SQLServer:Access Methods Range Scans/sec 2027247756 SQLServer:Access Methods Workfiles Created/sec 49771600 SQLServer:Access Methods Worktables Created/sec 28205828 SQLServer:Access Methods Index Searches/sec 4890715219 SQLServer:Access Methods FreeSpace Scans/sec 21178928 SQLServer:Access Methods FreeSpace Page Fetches/sec 21226653 SQLServer:Access Methods Pages Allocated/sec 41483279 SQLServer:Access Methods Extents Allocated/sec 4743504 SQLServer:Access Methods Extent Deallocations/sec 4806606 SQLServer:Access Methods Page Deallocations/sec 41419137 SQLServer:Access Methods Page Splits/sec 23834799 SQLServer:Memory Manager SQL Cache Memory (KB) 29160 SQLServer:Memory Manager Target Server Memory (KB) 8428480 SQLServer:Memory Manager Total Server Memory (KB) 7978472 Some body could help me please.And I really want to know the cause for the above.

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• data is not posted in $_POST variable using AJAX [migrated]

  - by Oliver

  Im having a problem in one of my script. Server is running in php, and im using AJAX to post data. Here is my script. PHP script: 0){ echo "Search Result :"; for ($x=0;$xProject Name:   ".mysql_result($result,$x,"projname").""; echo "APMS ID:   ".mysql_result($result,$x,"apmsid").""; echo "Prefix/es:   ".mysql_result($result,$x,"projprefix").""; echo "Usage Type:   ".mysql_result($result,$x,"usagetype").""; echo "Rate:   ".mysql_result($result,$x,"projrate").""; echo "Offer Details:   ".mysql_result($result,$x,"offerdetails").""; } }else{ echo "No results found ..."; } }else{ echo "Problems encountered while processing the data ..."; } ? JS Script: function QueryPrefix() { var xmlhttp; var pStr = document.getElementById('Editbox2'); var htmlHolder = document.getElementById('Html1'); var butStr = document.getElementById('Button1'); if (pStr.value.length == 0){ alert("Please enter a value on the box provided!"); return; } pStr.value=""; if (window.XMLHttpRequest) {// code for IE7+, Firefox, Chrome, Opera, Safari xmlhttp=new XMLHttpRequest(); } else {// code for IE6, IE5 xmlhttp=new ActiveXObject("Microsoft.XMLHTTP"); } xmlhttp.onreadystatechange=function() { if (xmlhttp.readyState==4) { htmlHolder.innerHTML=xmlhttp.responseText; butStr.disabled=false; } } butStr.disabled=true; xmlhttp.open("POST","searchutype.php",false); xmlhttp.setRequestHeader("Content-type","application/x-www-form-urlencoded"); xmlhttp.send("pStr=" + pStr.value); }

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• How do you get Windows 7 to show time remaining in the battery meter?

  - by MrDaniel

  Running Microsoft Windows 7 Home Premium on a HP Laptop. The system tray power meter never shows the time remaining in the system tray. Only really ever show a percentage remaining number as pictured. The windows help documentation on the "battery meter" seems to indicate that it should display a time remaining indicator, is this accurate? How accurate is the battery meter? The accuracy of what the battery meter reports—what percentage of a full charge remains and how long you can use your laptop before you must plug it in—depends on several factors. Most of these factors fall into the following two categories: What you use the laptop for. Because some activities drain the battery faster than others (for example, watching a DVD consumes more power than reading and writing e-mail), alternating between activities that have significantly different power requirements changes the rate at which your laptop uses battery power. This can vary the estimate of how much battery charge remains. Battery hardware and sensor circuitry. Newer, "smart" batteries are equipped with circuitry that calculates the measurements of charge remaining and reports the information to the battery meter. Older batteries use less sophisticated circuitry and might be less accurate.

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• DRBD on a disk with existing file system that takes all the place

  - by Karolis T.

  I'm currently trying to simulate the environment via XEN. I have installed two debian systems with such FS layout: cltest1:/etc# df -h Filesystem Size Used Avail Use% Mounted on /dev/xvda2 6.0G 417M 5.2G 8% / tmpfs 257M 0 257M 0% /lib/init/rw udev 10M 16K 10M 1% /dev tmpfs 257M 4.0K 257M 1% /dev/shm Host cltest2 is identical. Here's my drbd.conf global { minor-count 1; } resource mysql { protocol C; syncer { rate 10M; # 10 Megabytes } on cltest1 { device /dev/drbd0; disk /dev/xvda2; address 192.168.1.186:7789; meta-disk internal; } on cltest2 { device /dev/drbd0; disk /dev/xvda2; address 192.168.1.187:7789; meta-disk internal; } } I have not created filesystem on drbd0 Starting DRBD via init.d script errors out with: Starting DRBD resources: [ d(mysql) /dev/drbd0: Failure: (114) Lower device is already claimed. This usually means it is mounted. [mysql] cmd /sbin/drbdsetup /dev/drbd0 disk /dev/xvda2 /dev/xvda2 internal --set-defaults --create-device failed - continuing! Running: drbdadm create-md mysql gives: cltest1:/etc# drbdadm create-md mysql md_offset 6442446848 al_offset 6442414080 bm_offset 6442217472 Found ext3 filesystem which uses 6291456 kB current configuration leaves usable 6291228 kB Device size would be truncated, which would corrupt data and result in 'access beyond end of device' errors. You need to either * use external meta data (recommended) * shrink that filesystem first * zero out the device (destroy the filesystem) Operation refused. Command 'drbdmeta /dev/drbd0 v08 /dev/xvda2 internal create-md' terminated with exit code 40 drbdadm aborting As I understand, all of my problems are because I don't have unallocated disk space on xvda2. What are my options besides shrinking FS and connecting a separate physical disk? Can't the meta-data be stored on a file in the local filesystem?

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• Toshiba Qosmio: Battery Stuck at 60%, does not Charges, PC can't power up, can't remain on with out

  - by Fellknight

  Just like the tittle says, now let me try to give some more detail about the symptoms; The battery is stuck at 60 percent (68% at the moment of this writing).When hovering over the battery icon in Windows 7 Home Premium x64 it reads:"68% available (plugged in, charging)", there's no x or any sing the OS is displaying any error. No matter how much time left connected to the AC adapter the battery doesn't charge, it seems however it continues to discharge at its normal rate when disconnected from the laptop (about 1% each 2 weeks). Now this last symptom is the one i find most strange it "seems" the laptop somehow isn't recognizing the battery because even with the remaining charge of 60%(ish) the laptop wont power up or remain on if disconnected from its AC adapter(if it's on and is unplugged it will immediately turn off). Meaning that even with the battery attached correctly in its right place is as if running the laptop with no battery at all. Toshiba's Utilities haven't detected anything strange (or anything for that matter) with the battery or the hardware. The laptop when in use is connected 90% of the time to a Belkin surge protector (like my 1TB EHD). The protector is working correctly (green light on) and the 1TB HD too, thus a power surge having damaged it's very unlikely. Thnx in advance

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• What used the linux memory? Low cache, low buffer, not a VM

  - by Jason

  First of all, yes, I have read LinuxAteMyRAM, which doesn't explain my situation. # free -tm total used free shared buffers cached Mem: 48149 43948 4200 0 4 75 -/+ buffers/cache: 43868 4280 Swap: 38287 0 38287 Total: 86436 43948 42488 # As shown above, the -/+ buffers/cache: line shows indicates the used memory rate is very high. However, from output of top, I don't see any process used more than 100MB of memory. So, what used the memory? PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 28078 root 18 0 327m 92m 10m S 0 0.2 0:25.06 java 31416 root 16 0 250m 28m 20m S 0 0.1 25:54.59 ResourceMonitor 21598 root -98 0 26552 25m 8316 S 0 0.1 80:49.54 had 24580 root 16 0 24152 10m 760 S 0 0.0 1:25.87 rsyncd 4956 root 16 0 62588 10m 3132 S 0 0.0 12:36.54 vxconfigd 26703 root 16 0 139m 7120 2900 S 1 0.0 4359:39 hrmonitor 21873 root 15 0 18764 4684 2152 S 0 0.0 30:07.56 MountAgent 21883 root 15 0 13736 4280 2172 S 0 0.0 25:25.09 SybaseAgent 21878 root 15 0 18548 4172 2000 S 0 0.0 52:33.46 NICAgent 21887 root 15 0 12660 4056 2168 S 0 0.0 25:07.80 SybaseBkAgent 17798 root 25 0 10652 4048 1160 S 0 0.0 0:00.04 vxconfigbackupd This is an x86_64 machine (not a common-brand server) running x84_64 Linux, not a container in a virtual machine. Kernel (uname -a): Linux 2.6.16.60-0.99.1-smp #1 SMP Fri Oct 12 14:24:23 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux Content of /proc/meminfo: MemTotal: 49304856 kB MemFree: 4066708 kB Buffers: 35688 kB Cached: 132588 kB SwapCached: 0 kB Active: 26536644 kB Inactive: 17296272 kB HighTotal: 0 kB HighFree: 0 kB LowTotal: 49304856 kB LowFree: 4066708 kB SwapTotal: 39206624 kB SwapFree: 39206528 kB Dirty: 200 kB Writeback: 0 kB AnonPages: 249592 kB Mapped: 52712 kB Slab: 1049464 kB CommitLimit: 63859052 kB Committed_AS: 659384 kB PageTables: 3412 kB VmallocTotal: 34359738367 kB VmallocUsed: 478420 kB VmallocChunk: 34359259695 kB HugePages_Total: 0 HugePages_Free: 0 HugePages_Rsvd: 0 Hugepagesize: 2048 kB df reports no large consumption of memory from tmpfs filesystems.

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• Socket options for a tcp server with 3G clients & frequent disconnections

  - by Joel

  I have a TCP server, written in java, sending and receiving many short messages, from 500 bytes to 100 KB long. It's a chess game and chat server, to make it simple. The server is running Debian 6. Half of the clients are connecting from 3G networks, and half over standard DSL. A portion of the 3G clients lose connection pretty often. The error I get on the server and on the client socket is Connection reset. I have come across this page at Oracle documentation: socketOpt. I am wondering what I could tune there to lower the number of disconnections from 3G clients. I don't mind about the ping or transfer rate, but just about the TCP disconnections. I am not skilled enough to understand the impact of each setting, but I sort of understood that the TCP window was important, although I don't know exactly how. So I'm asking if anyone here has an idea ? Thanks if you can help.

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• Amazon EC2 Reserved Instances: "Heavy Utilization" clarification

  - by gravyface

  Should be another easy one here, but I need clarification on what they define as "heavy utilization" for Reserved Instance types. From their Website: Heavy Utilization RIs – Heavy Utilization RIs offer the most absolute savings of any Reserved Instance type. They’re most appropriate for steady-state workloads where you’re willing to commit to always running these instances in exchange for our lowest hourly usage fee. With this RI, you pay a little higher upfront payment than Medium Utilization RIs, a significantly lower hourly usage fee, and you’re charged that lower hourly rate for every hour in the Reserved Instance term you purchase. Using Heavy Utilization RIs, you can save up to 41% for a 1-year term and 58% for a 3-year term vs. running On-Demand Instances. If you’re trying to find a break-even utilization, you’re economically advantaged using Heavy Utilization RIs (vs. On-Demand Instances) if you plan to use your instance more than 43% of a 1-year term or 79% of a 3-year term. I'm assuming that, if I'm planning on running a 24/7 Web Server, then regardless of how many resources I consume (bandwidth, cpu cycles, memory), I would want to go with a Heavy Utilization Reserved Instance? This one Web Server in particular will likely barely budge the cpu, but it needs to be up and running 24/7. Not 100% on what they're defining as "heavy".

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• fail2ban log parsing too slow on Raspberry Pi - options? [migrated]

  - by Gordon Morehouse

  I'm running fail2ban on a Raspberry Pi at 950MHz which I cannot overclock further. The Pi is occasionally subject to SYN floods on particular ports. I've set up iptables to throttle the rate of SYNs on the port of interest; when the throttle limits are exceeded, hosts which send SYNs are dropped into the REJECT chain and the particular SYN packet which exceeded the limit is logged. fail2ban then watches for these logged SYNs and, after seeing a few, temporarily bans the host for a short time (this is a transient issue in the app I'm working with). The problem is that the SYN floods can occasionally reach rates which are too fast for fail2ban to keep up with; I'll see 20-40 log messages per second, and eventually fail2ban falls behind and becomes ineffective. To add insult to injury, it continues consuming a LOT of CPU as it tries to catch up. I have verified that DROP chained packets from hosts already banned by fail2ban are not logged, and thus do not add to its load. What are my options here? I have a few ideas, but no clear path forward. Could I make the log-parse regex "easier" so it takes fewer cycles? Would using iptables --log-prefix to put a token near the start of the log message, and/or otherwise simplifying/altering the fail2ban regex help? Here is the current fail2ban config line containing a regex: failregex = kernel:.*?SRC=(?:::f{4,6}:)?(?P<host>[\w\-.^_]+) DST.*?SYN Is there a faster way for fail2ban to watch for the packets exceeding the limits than parsing kern.log? Could fail2ban be run under PyPy instead of CPython with minimal nonstandard wizardry (the OS is Raspbian 7, so, mostly Debian 7)? Is there something better than fail2ban that I could use to watch for the packets which exceed the SYN limits, and after N exceeds in X seconds, temporarily put the offending IP into the iptables DROP bucket, and take it out when the ban timer expires? Again, I'd vastly prefer a solution that uses as much software available in Debian as possible, though I can build Debian packages in a pinch.

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• managing a high traffic media sharing website

  - by Jordan Westerman

  i'm in the process of developing a website that i predict will generate a lot of traffic. the site will be similar to many other sites offering free media streaming: mp3's. we are going to start with a pretty minimal amount of media to share, but the basic idea is that artists will set up a profile page with music they have made available for consumers to visit the page and listen to the music. we are starting with just a handful of artists, but i think that this project will generate more and more artist pages. eventually i'd like to set it up so consumers can create personalized playlists. how can i best prepare server space and bandwidth capabilities? i have a small team of web designers and programmers working on the site, as i am pretty illiterate when it comes to site management. as the ring leader of this organization, i am more or less looking for financial requirements and monthly burn rate estimates. i don't have a ton of capitol to start with, putting together a business plan, but i am seeking investments. i have a game plan to grow fast enough to be successful, and slow enough to manage the financial growth requirements. any questions i may have failed to ask myself? is it realistic to start this project on a shared server, and upgrade? any financial advice you think i can use? i really appreciate any advice given, as this is my first business venture. thank you all in advance. Jordan Westerman D.B.A. Badfish Productions, LLC

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• virtualbox snapshot size

  - by intuited

  I've started using Windows 7 under VirtualBox on an Ubuntu 10.10 host. I took about 6 snapshots over the course of setting up the VM from the Windows restore image that came with the computer. My installations were more or less limited to windows updates, antivirus, and the VB Guest Additions. I uninstalled much more than I installed. The VM was running for about 24 hours total. The snapshots increased in size at a worrisome rate, even when the machine was idle: the snapshot .vdi file for the period between 11:22 PM and 9:02 AM is 6 gigs in size; during that time very little happened. The other .vdi files are between 0.5 and 3 GB, most between 1 and 2 GB. The corresponding .sav files are between 0.5 and 1 GB. The Internet connection where I was doing this is limited to 30KB/s download, which, constantly saturated, works out to less than 3 GB per 24 hour period. Is this normal? Is there something that can be done to make snapshots more practical? update On starting up the VM again, I've noticed that mscorsvw is using significant processing time. Apparently this process [precompiles .NET assemblies]. This may have been going on during the period when I was taking snapshots, which might explain some of the snapshot size increase. I would be somewhat surprised to learn that this could be responsible for over 10 GB of additional disk usage, or that it would run for roughly 24 hours. Is this possible?

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• What do "Unknown SSAP" and "Unknown DSAP" mean in tcpdump?

  - by lacker

  While trying to fix a problem with intermittently losing internet connection on a machine with a wireless connection to a router, I ran tcpdump and noticed packets with "Unknown SSAP" and "Unknown DSAP" errors coming at a rate of a few per second. 20:27:21.703178 00:24:a5:af:24:f6 (oui Unknown) Unknown SSAP 0xde > 1c:65:9d:48:38:95 (oui Unknown) Unknown DSAP 0xe2 Information, send seq 0, rcv seq 16, Flags [Response], length 171 20:27:21.724726 00:24:a5:af:24:f6 (oui Unknown) Unknown SSAP 0xde > 1c:65:9d:48:38:95 (oui Unknown) Unknown DSAP 0xe2 Information, send seq 0, rcv seq 16, Flags [Response], length 104 20:27:21.746449 00:24:a5:af:24:f6 (oui Unknown) Unknown SSAP 0xde > 1c:65:9d:48:38:95 (oui Unknown) Unknown DSAP 0xe4 Information, send seq 0, rcv seq 16, Flags [Response], length 88 20:27:21.970963 00:24:a5:af:24:f6 (oui Unknown) Unknown SSAP 0xde > 1c:65:9d:48:38:95 (oui Unknown) Unknown DSAP 0xe8 Information, send seq 0, rcv seq 16, Flags [Response], length 76 20:27:22.016565 00:24:a5:af:24:f6 (oui Unknown) Unknown SSAP 0xde > 1c:65:9d:48:38:95 (oui Unknown) Unknown DSAP 0xea Information, send seq 0, rcv seq 16, Flags [Response], length 88 20:27:22.038471 00:24:a5:af:24:f6 (oui Unknown) Unknown SSAP 0xde > 1c:65:9d:48:38:95 (oui Unknown) Unknown DSAP 0xea Information, send seq 0, rcv seq 16, Flags [Response], length 171 What does the "Unknown SSAP" and "Unknown DSAP" mean, and does it indicate a problem?

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• How to set up QoS on ADSL router (terracom) for prioritizing browsing

  - by DBZ_A

  I want to configure the ADSL router which connects 10+ machines to the internet. I want to give maximum priority to browsing (ports 80,443) and set low priority for bittorrent etc.(port 42180) I have been experimenting with settings , but with no luck. There are three settings which confuse me, along with my understanding. 802.1 Priority - Related to LAN level, possible values 0-7 , higher numbers means higher priority. 'Mark traffic priority' - clueless about this. IPP/DS - IP Precedence - possible values 0-7 ; 6 & 7 are reserved, so set 5 for highest priority. Or when using DSCP - set 46 for highest priority. Please help me in getting this done... Similer question for another model of router here , but with less number of confusing options :) How to configure QoS on home router Update: from discussion on another thread, QoS can control only upstream traffic (from router to the internet) , while this may in turn affect downstream traffic rate, there is no direct control over data coming into the router.

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• Embedding a WMV file on the web via URL in a Powerpoint presentation

  - by Dave

  I've got a situation where I want to distribute a Powerpoint presentation to several people. I want to be able to embed several large videos in this presentation by linking to a URL, for the following specific reasons: the videos are highly confidential, and I would like to be able to delete them at some later date, but still allow them to see it in the presentation while it is online. I want to send the presentation via email (so it should be small), and put the links on a server with a faster upload speed Maybe I'd like to change the video at some point without changing the presentation One option that addresses #1 is to hook up a webcam and allow them to see video stream from the office, but our upload rate is too slow for this to be a viable option. I've tried embedding a video and giving Powerpoint the URL. It seems to work initially, because the first frame appears in my slideshow. However, when I play the slideshow, nothing happens. I looked at the network traffic on my computer, and nothing was getting downloaded from the remote server. Any suggestions on how to make this work, or how to at least satisfy the criteria listed above would be great!

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• Strange ASP.NET Queue Performance Counters Behavior?

  - by LemurTech

  We have an ASP.NET 2.0 site running in classic mode. I am seeing very strange behavior in the performance counter values. Perhaps these are bugs (I've been all over Google trying to verify this, without much luck), or perhaps it is just my inexperience with monitoring these things. This PerfMon graph (http://imgur.com/Jv5io5J) represents a load test where I add up to 350 virtual users to the site, at a rate of about 1/sec, performing relatively simple page browsing. At the end of the test, I gradually taper off the number of users. This is a 4 CPU server. Machine.config settings for are at the defaults. The solid blue line is ASP.NET Apps v2.x\Requests Executing for the application in question. The profile makes perfect sense, with a quick ramp-up to 32 executing requests (minWorkerThreads x 4CPUs), followed by a slower ramp-up to 48 ((maxWorkerThreads - minWorkerThreads) x 4CPUs). The solid yellow line is ASP.NET v2.x\Requests Queued. Again, this makes sense: after the initial 32 request threads are activated, the queue begins to build as new thread initialization can't keep pace with incoming requests. But as executing requests reaches its highest possible value of 48, the counter for ASP.NET Apps v2.x\Requests Queued (green solid line) suddenly springs to life and maintains step with the yellow counter. As far as I can tell, and with no other apps running on the server, these two counters should have had the same values from the start. One other odd thing: The counter for ASP.NET v2.x\Request Wait Time (dotted yellow line) also does not spring to life until executing requests reaches 48. Shouldn't I be seeing values here from the moment ASP.NET v2.x\Requests Queued begins to build? And likewise, why would ASP.NET Apps v2.x\Request Execution Time (dotted blue) increase significantly only after that peak of 48 is reached? Shouldn't it ramp-up gradually along with queued requests?

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• Apache process consuming all memory on the server

  - by jemmille

  I have an apache process that suddenly appears on a particular server. When it shows up it starts consuming memory at a very rapid rate, then moves on to all the swap. In all it consumes about 11GB (including swap) of memory and the server eventually becomes unresponsive. The load on the server is under 1 at all other times. The process runs as nobody and I am having a hard time tracking down the source. If i run an strace on the process and all it did was continuously dump out mprotect over and over again If i run lsof -p <pid>, I get this, but only sometimes: httpd 19229 nobody 152u IPv4 175050 crawl-66-249-67-216.googlebot.com:62336 (CLOSE_WAIT) httpd 19229 nobody 153u IPv4 179104 crawl-66-249-71-167.googlebot.com:58012 (ESTABLISHED) As long as I catch it, I can kill the process and the server almost immediately stabilizes. I have on site on the server that is getting a few thousand hits a a day that I think might be the source, but I still can't find the exact reason. Also, this is a cPanel server and I have upcp'd the server, rebuilt apache with easy apache, and rebuilt httpd.conf. It is not spawing any related processes, meaning I can find any php, mysql, cgi, etc. processes that relate to this process. It's just a loner process that balloons fast and consumes ever last MB of memory. This is on a XenServer 5.6 based VM. No other servers in the cluster are having this issue.

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• How to solve SocketException: Permission denied: connect

  - by luxinxian

  I recently encountered a problem that is giving me a headache and I need help ... The System consists of two subsystems, called A and B, each running on a standalone Tomcat instance and currently running on the same machine. A invokes B's service via Spring httpInvoker (i.e. over HTTP). B system also invokes the other system's services via HTTP. Symptoms: the system starts to run and appears to work normally for around 10-15 days; the system will run for a period of time after an exception: org.springframework.remoting.RemoteAccessException: Could not access HTTP invoker remote service at [http://xxx.xxx.xxx.xxx/remoting/call]; The nested exception is java. net.SocketException: **Permission denied: connect** when the exception occurs, the system continues. This happens always, not only occasionally. (It looks like some resources are exhausted, but CPU rate < 5%, memory < 15%, network < 5%). when the system call between A and B fails, the B system call over HTTP to an external service also failed, with the same exception. Restarting both Tomcat services makes the whole system work properly. So repeatedly following steps 1 - 5, I have not found the root reason. Environment: windows 2008 R2 tomcat7.0.42 x86_64 oralce-jdk-1.7.0_40 Any ideas?

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• Reducing IO caused by nginx

  - by glumbo

  I have a lot of free RAM but my IO is always 100 %util or very close. What ways can I reduce IO by using more RAM? My iotop shows nginx worker processes with the highest io rate. This is a file server serving files ranging from 1mb to 2gb. Here is my nginx.conf #user nobody; worker_processes 32; worker_rlimit_nofile 10240; worker_rlimit_sigpending 32768; error_log logs/error.log crit; #pid logs/nginx.pid; events { worker_connections 51200; } http { include mime.types; default_type application/octet-stream; access_log off; limit_conn_log_level info; log_format xfs '$arg_id|$arg_usr|$remote_addr|$body_bytes_sent|$status'; sendfile off; tcp_nopush off; tcp_nodelay on; directio 4m; output_buffers 3 512k; reset_timedout_connection on; open_file_cache max=5000 inactive=20s; open_file_cache_valid 30s; open_file_cache_min_uses 2; open_file_cache_errors on; client_body_buffer_size 32k; server_tokens off; autoindex off; keepalive_timeout 0; #keepalive_timeout 65;

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• Cisco ASA5505 won't sync with NTP

  - by Martijn Heemels

  Today I noticed that the clock my Cisco ASA 5505 firewall was running about 15 minutes late, which surprised me since I've set up the NTP client. My two NTP servers 10.10.0.1 and 10.10.0.2 are virtualized Windows Server 2008 R2 domain controllers, and both have the correct time. As shown below, the ASA knows about the two servers, can ping them and seems to poll them periodically, so I suppose it can reach them both. The ASA claims its time source is NTP, however the clock is unsynchronized. Neither host is marked as synced. Result of the command: "ping 10.10.0.1" Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 10.10.0.1, timeout is 2 seconds: !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/1 ms Result of the command: "sh ntp ass" address ref clock st when poll reach delay offset disp ~10.10.0.1 .LOCL. 1 78 1024 377 0.5 643.69 17.0 ~10.10.0.2 10.10.0.1 2 190 1024 377 0.9 655.91 58.4 * master (synced), # master (unsynced), + selected, - candidate, ~ configured Result of the command: "sh ntp stat" Clock is unsynchronized, stratum 16, no reference clock nominal freq is 99.9984 Hz, actual freq is 99.9984 Hz, precision is 2**6 reference time is 00000000.00000000 (07:28:16.000 CEST Thu Feb 7 2036) clock offset is 0.0000 msec, root delay is 0.00 msec root dispersion is 0.00 msec, peer dispersion is 0.00 msec Result of the command: "sh clock detail" 10:33:23.769 CEDT Tue Jun 26 2012 Time source is NTP UTC time is: 08:33:23 UTC Tue Jun 26 2012 Summer time starts 02:00:00 CEST Sun Mar 25 2012 Summer time ends 03:00:00 CEDT Sun Oct 28 2012 I've tried the basic steps of manually setting the time and removing and adding the timeservers, to no avail. My ASA's ntp config is simply: ntp server 10.10.0.1 ntp server 10.10.0.2 Do I need to enable authentication to use a Windows NTP server? Any thoughts?

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• Servers in DMZ will not communicate with each other

  - by Tukaro

  (Full disclosure: I rate barely above "noob" when it comes to networking.) My workplace recent got a new web server. Since we're nearing the end of an overhaul of our website, we're doing a slooooow migration between the old web server and the new one. The old webserver (we'll call it SERVOLD) is Windows Server 2008 with IIS 7. It does not have SQL Server installed. The new server (SERVNEW) is Windows Server 2008 R2, IIS 7.5, with the same version of SQL Server installed. Both are located in the DMZ for our network, and both have their own outward-facing IP address (.3 and .4, respectively). Each server can communicate fine with computers within the domain (not in the DMZ), and those same computers have no trouble communicating with either server. Both servers are also accessible from the internet just fine. However, no matter what, these two servers just refuse to recognize each other. They have the same Workgroup name listed (WORKGROUP), and I thought that would be enough for them to recognize each other. What needs to happen such that I can get these two servers to communicate with each other? We want to do a gradual roll-over to the new website (new one uses ASP.NET, old one uses CFMX), so being able to use one database between both servers is a necessity. Thanks!

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• Why are FMS logs filled with 'play' event status code 408 for a failed webcast?

  - by Stu Thompson

  Recently we had a live webcast event go horribly wrong. I'm doing the technical post-mortem, with limited information. We know that the hardware encoder (a Digital Rapid Touch Stream Web HDI) was unable to send upstream at a sustained reliable high rate. What we don't know is if the encoder's connection was problematic (Zürich), or that of the streaming server (in Frankfurt). Unfortunately, I've got three different vendors all blaming each other (the CDN who runs the server, the on-site ISP and the on-site encoding team.) In the FMS log files I see a couple of interesting things: Zillions of Status Code 408 on play event entries for clients. Adobe's documentation stats that this "Stream stopped because client disconnected". ("Zillions" would be a ratio of 10 events for every individual IP address.) Several unpublish / (re)publish events per hour for the encoder I'd like to know if all those 408s could tell me with authority that the FMS server was starved for bandwidth, or that the encoding signal was starved (and hence the server was disconnecting clients.) Any clues?

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• Postfix Problem (helo/hostname mismatch)!

  - by CuSS

  Hi all, I have a server, and it is running a error for one email only (all other mails in that domain are working). How can i fix it? (The error is above:) May 17 11:43:56 webserver postfix/policyd-weight[5596]: weighted check: IN_DYN_PBL_SPAMHAUS=3.25 NOT_IN_SBL_XBL_SPAMHAUS=-1.5 NOT_IN_SPAMCOP=-1.5 NOT_IN_BL_NJABL=-1.5 DSBL_ORG=ERR(0) CL_IP_NE_HELO=4.75 RESOLVED_IP_IS_NOT_HELO=1.5 HELO_NUMERIC=10.625 (check from: .eticagest. - helo: .[10.0.0.17]. - helo-domain: .17].) FROM_NOT_FAILED_HELO(DOMAIN)=6.25; <client=188.80.139.211> <helo=[10.0.0.17]> <[email protected]> <[email protected]>; rate: 21.875 May 17 11:43:56 webserver postfix/policyd-weight[5596]: decided action=550 Mail appeared to be SPAM or forged. Ask your Mail/DNS-Administrator to correct HELO and DNS MX settings or to get removed from DNSBLs; MTA helo: [10.0.0.17], MTA hostname: bl15-139-211.dsl.telepac.pt[188.80.139.211] (helo/hostname mismatch); <client=188.80.139.211> <helo=[10.0.0.17]> <[email protected]> <[email protected]>; delay: 6s

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• iOrgSoft Video Converter for Mac

  - by terryhao

  [url=http://www.iorgsoft.com/Video-Converter-for-Mac/]video converter for mac[/url] IOrgSoft[url=http://www.iorgsoft.com/Video-Converter-for-Mac/]video converter for mac[/url] is an excellent video converting and editing software for Macintosh users. A built-in powerful video player, trimming, splitter/joiner/merger tools give you everything you need to manage your videos on mac. This mac converter supports many video formats like AVI, MP4, WMV, MPEG-1,2, YouTube(FLV), Limewire, Realplayer(RM,RMVB), Quicktime(MOV), MKV, MOD, TOD, ASF, 3GP, 3G2, AVCHD/M2TS/MTS/TS/TRP/TS, MXF, etc. Video Converter for Mac features a very clean user interface which makes this task a breeze. You can trim/clip any segments and optionally merge/join and sort them to create your personal movie, crop frame size to remove any unwanted area in the frame just like a pair of smart scissors and set the output video parameters such as video resolution, video frame rate, audio codec, video codec and video quality. Converted videos can be imported into imovie/itunes/FCE/FCP/QuickTime Pro or played on iPad, iPod touch, iPod classic, iPod nano, iPhone, iPhone 3GS, Apple TV, PSP, PS3, Creative Zen, iRiver PMP, Archos, mobile phones and other MP4/MP3 players. Video Converter for Mac makes video conversion easy. Free download now and have a try for yourself! [url=http://www.iorgsoft.com/Video-Editor-for-Mac/]Video Editor for Mac[/url] [url=http://www.iorgsoft.com/Mod-Converter/]mod converter[/url] [url=http://www.iorgsoft.com/Mod-Converter-for-Mac/]mod converter for mac[/url]

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• Why is this APC installation failing so badly?

  - by Matt

  I have multiple instances of APC running on my server with similar configurations (albeit with different cache sizes. However, one of the instances is performing extremely poorly, and I have no idea why (100% cache fragmentation, high miss rate). The runtime settings I'm using are as follows (pretty much out of the box): apc.cache_by_default 1 apc.canonicalize 1 apc.coredump_unmap 0 apc.enable_cli 0 apc.enabled 1 apc.file_md5 0 apc.file_update_protection 2 apc.filters apc.gc_ttl 3600 apc.include_once_override 0 apc.lazy_classes 0 apc.lazy_functions 0 apc.max_file_size 1M apc.mmap_file_mask apc.num_files_hint 1000 apc.preload_path apc.report_autofilter 0 apc.rfc1867 0 apc.rfc1867_freq 0 apc.rfc1867_name APC_UPLOAD_PROGRESS apc.rfc1867_prefix upload_ apc.rfc1867_ttl 3600 apc.shm_segments 1 apc.shm_size 10M apc.slam_defense 1 apc.stat 1 apc.stat_ctime 0 apc.ttl 0 apc.use_request_time 1 apc.user_entries_hint 4096 apc.user_ttl 0 apc.write_lock 1 APC is version 3.1.6, PHP is 5.3.3-1ubuntu9.5. I've tried restarting Apache multiple times, so this isn't a freak instance. The instance with problems is simply running Wordpress with a few plugins installed. All other instances (~4) on the server are running perfectly fine with almost 100% hit rates and 0% fragmentation; for example this instance is holding a website built using the Symfony framework. Any help would be much appreciated; I haven't had much experience with APC and was hoping for it to be an out-of-the-box speed boost ;).

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• RabbitMQ message consumers stop consuming messages

  - by Bruno Thomas

  Hi server fault, Our team is in a spike sprint to choose between ActiveMQ or RabbitMQ. We made 2 little producer/consumer spikes sending an object message with an array of 16 strings, a timestamp, and 2 integers. The spikes are ok on our devs machines (messages are well consumed). Then came the benchs. We first noticed that somtimes, on our machines, when we were sending a lot of messages the consumer was sometimes hanging. It was there, but the messsages were accumulating in the queue. When we went on the bench plateform : cluster of 2 rabbitmq machines 4 cores/3.2Ghz, 4Gb RAM, load balanced by a VIP one to 6 consumers running on the rabbitmq machines, saving the messages in a mysql DB (same type of machine for the DB) 12 producers running on 12 AS machines (tomcat), attacked with jmeter running on another machine. The load is about 600 to 700 http request per second, on the servlets that produces the same load of RabbitMQ messages. We noticed that sometimes, consumers hang (well, they are not blocked, but they dont consume messages anymore). We can see that because each consumer save around 100 msg/sec in database, so when one is stopping consumming, the overall messages saved per seconds in DB fall down with the same ratio (if let say 3 consumers stop, we fall around 600 msg/sec to 300 msg/sec). During that time, the producers are ok, and still produce at the jmeter rate (around 600 msg/sec). The messages are in the queues and taken by the consumers still "alive". We load all the servlets with the producers first, then launch all the consumers one by one, checking if the connexions are ok, then run jmeter. We are sending messages to one direct exchange. All consumers are listening to one persistent queue bounded to the exchange. That point is major for our choice. Have you seen this with rabbitmq, do you have an idea of what is going on ? Thank you for your answers.

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