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• CPU for desktop/server

  - by jendy

  Which is the difference between a server and a desktop CPU ? Why should I buy a Xeon processor for a server why don't use instead a simple Intel quad 4-core CPU for a desktop PC ?

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• Ubuntu Server 12.04 CPU Load

  - by zertux

  I have a Server (2x Hexa-Core Xeon E5649 2.53GHz w/HT with 32GB RAM and 20000 GB Bandwidth) running Ubuntu Server 12.04 LTS. The server runs LAMP and serves one website only, the estimated number of users is to be ~ 15,000 at the same time. At the moment i have around 2000 users online each of them runs 50 MySQL queries (small values mostly select and insert) from the beginning until the end of the session. Server CPU Load is high at this number of connections while the RAM usage is almost 1GB out of 32GB its worth mentioning that the server was running very fast with no problems at all but am concerned about the load average. http://s12.postimage.org/z7hi6mz3h/photo.png top - 03:02:43 up 9 min, 2 users, load average: 50.83, 30.14, 12.83 Tasks: 432 total, 1 running, 430 sleeping, 0 stopped, 1 zombie Cpu(s): 0.1%us, 0.2%sy, 0.0%ni, 66.5%id, 33.1%wa, 0.0%hi, 0.0%si, 0.0%st Mem: 32939992k total, 3111604k used, 29828388k free, 84108k buffers Swap: 2048280k total, 0k used, 2048280k free, 1621640k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 2860 root 20 0 25820 2288 1420 S 3 0.0 0:11.18 htop 1182 root 20 0 0 0 0 D 2 0.0 0:01.46 kjournald 1935 mysql 20 0 12.3g 161m 7924 S 1 0.5 102:31.45 mysqld 11 root 20 0 0 0 0 S 0 0.0 0:00.38 kworker/0:1 1822 www-data 20 0 247m 25m 4188 D 0 0.1 0:01.81 apache2 2920 www-data 20 0 0 0 0 Z 0 0.0 0:01.20 apache2 <defunct> 2942 www-data 20 0 247m 23m 3056 D 0 0.1 0:00.20 apache2 3516 www-data 20 0 247m 23m 3028 D 0 0.1 0:00.06 apache2 3521 www-data 20 0 247m 23m 3020 D 0 0.1 0:00.09 apache2 3664 www-data 20 0 247m 23m 3132 D 0 0.1 0:00.09 apache2 3674 www-data 20 0 247m 23m 3252 D 0 0.1 0:00.06 apache2 3713 www-data 20 0 247m 23m 3040 D 0 0.1 0:00.09 apache2 1 root 20 0 24328 2284 1344 S 0 0.0 0:03.09 init 2 root 20 0 0 0 0 S 0 0.0 0:00.00 kthreadd 3 root 20 0 0 0 0 S 0 0.0 0:00.01 ksoftirqd/0 6 root RT 0 0 0 0 S 0 0.0 0:00.00 migration/0 7 root RT 0 0 0 0 S 0 0.0 0:00.00 watchdog/0 8 root RT 0 0 0 0 S 0 0.0 0:00.00 migration/1 9 root 20 0 0 0 0 S 0 0.0 0:00.00 kworker/1:0 root@server:~/codes# vmstat 1 procs -----------memory---------- ---swap-- -----io---- -system-- ----cpu---- r b swpd free buff cache si so bi bo in cs us sy id wa 19 0 0 29684012 86112 1689844 0 0 19 590 254 231 48 0 47 5 23 0 0 29704812 86128 1697672 0 0 4 320 11100 8121 77 1 22 0 33 0 0 29671044 86156 1705308 0 0 0 5440 13190 9140 95 1 4 0 33 3 0 29670088 86160 1706288 0 0 0 32932 12275 7297 99 0 1 0 35 0 0 29693456 86188 1710724 0 0 4 676 12701 7867 98 1 1 0 ^C I have not changed any of the default configurations that comes with Ubuntu. Is this load normal for such powerful server ? is there any optimization i can make to Apache/MySQL to minimize the load ? What do you recommend ?

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• MB with CPU and power supply - can be turned on but not off

  - by COcodrilo

  Hi, Not sure whether this question belongs here, I hope so. I have just bought a motherboard and CPU. I have installed the CPU, cooler and connected to CPUFAN on the MB. I have plugged the power supply to MB and the cable from "ON" button to pins named "PWR" and the LEDs. However when I turn on the PC, both HDD and POWER leds are continously on and the PC cannot be turned out. What could I be missing?

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• Why does explorer.exe use so much CPU?

  - by Asgeir S. Nilsen

  The explorer.exe process on my Vista x64 has started using a lot of CPU recently. Restarting the process typically solves the problem. Is there a simple way to inspect the process to see where (threads, modules) the high CPU load is spent?

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• MB with CPU and power supply - can be turned on but not off [closed]

  - by COcodrilo

  Hi, Not sure whether this question belongs here, I hope so. I have just bought a motherboard and CPU. I have installed the CPU, cooler and connected to CPUFAN on the MB. I have plugged the power supply to MB and the cable from "ON" button to pins named "PWR" and the LEDs. However when I turn on the PC, both HDD and POWER leds are continously on and the PC cannot be turned out. What could I be missing?

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• PHP versions warning on Plesk 11.0.9 upgrade on CentOS server

  - by Pixman

  I have a server turning on Plesk 10.4.4 and I want to upgrade it to 11.0.9. When I use the online upgrade tool, I have this warning: Parallels Panel pre-upgrade check... WARNING: You have a mixed set of 'php' and 'php53' packages installed. Installation or upgrade may fail or produce unexpected results. To resolve this issue run "sed -i.bak -e '/^\s*skip-bdb\s*$/d' /etc/my.cnf ; yum update 'php*' 'mysql*'". PHP Warning: Directive 'safe_mode' is deprecated in PHP 5.3 and greater in Unknown on line 0 I have run the code in ssh, but nothing changes. I have already searched all package names with "php", and I have this list: # yum list installed | grep php php-common.i386 5.3.13-5.el5.art installed php-pear.noarch 1:1.4.9-8.el5 installed php5-ioncube-loader.i386 4.0.7-11062118 installed php53.i386 5.3.3-13.el5_8 installed php53-cli.i386 5.3.3-13.el5_8 installed php53-devel.i386 5.3.3-13.el5_8 installed php53-gd.i386 5.3.3-13.el5_8 installed php53-imap.i386 5.3.3-13.el5_8 installed php53-mbstring.i386 5.3.3-13.el5_8 installed php53-mcrypt.i386 5.3.3-1.el5 installed php53-mysql.i386 5.3.3-13.el5_8 installed php53-pdo.i386 5.3.3-13.el5_8 installed php53-sqlite2.i386 5.3.2-11041315 installed php53-xml.i386 5.3.3-13.el5_8 installed psa-appvault-phpads.noarch 2.0.8-8203520080409011611 installed psa-appvault-phpbb.noarch 3.0.0-8200820080409011626 installed psa-appvault-phpbook.noarch 1.50-8203220080409011638 installed psa-appvault-phpbugtracker.noarch 1.19-8203820080416050605 installed psa-appvault-phpdig.noarch 1.85-8203120080409011645 installed psa-appvault-phpmoney.noarch 1.3-8204320080409011649 installed psa-appvault-phpmyfamily.noarch 1.4.1-8203420080409011655 installed psa-appvault-phpmyvisites.noarch 2.3-8202820080409011701 installed psa-appvault-phprojekt.noarch 5.2-8200820080409011713 installed psa-appvault-phpsurveyor.noarch 0.98-8204320080409011723 installed psa-appvault-phpwebsite.noarch 0.10.2-8203420080409011738 installed psa-appvault-phpwiki.noarch 1.3.11-8204320080409011808 installed psa-php53-configurator.i386 1.6.1-cos5.build1013111101.14 installed After verification in the Plesk file: panel_preupgrade_checker.php I think the warning is due to these lines: (from : panel_preupgrade_checker.php) foreach ($packages as $package) { $name = $package['name']; $hasPhp5 |= ($name == 'php' || strpos($name, 'php-') === 0); $hasPhp53 |= (strpos($name, 'php53') === 0); } Now, I think the problem is just due to the names of theses packages: php-common.i386 5.3.13-5.el5.art installed php-pear.noarch 1:1.4.9-8.el5 installed Can you help me to resolve this situation?

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• Upgrade CentOS 5.2 to 5.3 -- but not 5.4

  - by Jeff Leyser

  Server currently running CentOS 5.2. Developers tell me they'd like the machine upgrade to CentOS 5.3 -- but not all the way to CentOS 5.4, as they haven't tested with 5.4 yet. I'm pretty sure a yum upgrade will put me at 5.4, as a yum check-update shows all sorts of 5.4 packages. So how do I move up to 5.3?

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• Proper upgrade path for Windows 7 to Windows 8 when the directory setup is non-standard

  - by Joey

  I have both a HDD and a SSD in my computer and after installing Windows I moved things around a little to ensure that the OS is on the SSD but my user profile resides on the SSD (with a few exceptions). I used junction points heavily for that. Windows and most applications are fine with that and it works well. Now I wonder whether I can in-place upgrade this to Windows 8 while retaining that exact setup or whether there is anything I can do to ease the upgrade process.

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• CPU fan making noise. plz suggest

  - by user32185

  CPU fan is making noise ...i figured out reasons: Cable coming out of fan is vibrating ... And may be also CPU fan is loose causing vibration... suggest options... i cleaned the fan ...but found that there is no heatsink compound /paste between processor and the fan..is it ok . My processor is p4 2.4 ghz motherboard intel 845 gvsr

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• RAM upgrade, what options are suitable?

  - by user55150

  I have a Dell GX520 optiplex model (mini tower), and I want to upgrade its RAM. I currently have 1GB RAM and I want to upgrade to 2GB. All I know about RAM is its capacity, and I've heard about speeds lately like 400mhz, 533mhz, 800mhz, 1333mhz. I want to know what are the differences among them and can my PC support all those types of speeds or not? And what is the most suitable one for my Dell PC, to avoid any problems or limitations.

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• What is the CPU microcode?

  - by golem

  Today after unpacking the initramfs file from my Linux /boot directory I found that it contains the GenuineIntel.bin file, and that that file is an image of what is called the CPU microcode. Then I found articles on ArchWiki and Wikipedia describing the subject. Now I'm not sure that my vague understanding of the subject is correct. Can anyone please explain what the CPU microcode is in plain English?

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• How can I find a list of all SSE instructions? What happens if a CPU doesn't support SSE?

  - by Blastcore

  So I've been reading about how processors work. Now I'm on the instructions (SSE, SSE2, etc) stuff. (Which is pretty interesting). I have lot of questions (I've been reading this stuff on Wikipedia): I've saw the names of some instructions that were added on SSE, however there's no explanation about any of them (Maybe SSE4? They're not even listed on Wikipedia). Where can I read about what they do? How do I know which of these instructions are being used? If we do know which are being used, let's say I'm doing a comparison, (This may be the most stupid question I've ever asked, I don't know about assembly, though) Is it possible to directly use the instruction on an assembly code? (I've been looking at this: http://asm.inightmare.org/opcodelst/index.php?op=CMP) How does the processor interpret the instructions? What would happen if I had a processor without any of the SSE instructions? (I suppose in the case we want to do a comparison, we wouldn't be able to, right?)

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• SQL SERVER – Service Broker and CAP_CPU_PERCENT – Limiting SQL Server Instances to CPU Usage

  - by pinaldave

  I have mentioned several times on this blog that the best part of blogging is the questions I receive from readers. They are often very interesting. The questions from readers give me a good idea what other readers might be thinking as well. After reading my earlier article Simple Example to Configure Resource Governor – Introduction to Resource Governor – I received an email from a reader and we exchanged a few emails. After exchanging emails we both figured out what is going on. It was indeed interesting and reader suggested to that I should blog about it.  I asked for permission to publish his name but he does not like the attention so we will just call him Jeff. I have converted our emails into chat for easy consumption. Jeff: Your script does not work at all. I think either there is a bug in SQL Server. Pinal: Would you please explain in detail? Jeff: Your code does not limit the CPU usage? Pinal: How did you measure it? Jeff: Well, we have third party tools for it but let us say I have limited the resources for Reporting Services and used your script described in your blog. After that I ran only reporting service workload the CPU is still used more than 100% and it is not limited to 30% as described in your script. Clearly something is wrong somewhere. Pinal: Did you say you ONLY ran reporting server load? Jeff: Yeah, to validate I ran ONLY reporting server load and CPU did not throttle at 30% as per your script. Pinal: Oh! I get it here is the answer - CAP_CPU_PERCENT = 30. Use it. Jeff: What is that, I think your earlier script says it will throttle the Reporting Service workload and Application/OLTP workload and balance it. Pinal: Exactly, that is correct. Jeff: You need to write more in email buddy! Just like your blogs, your answers do not make sense! No Offense! Pinal: Hmm…feedback well taken. Let me try again. In SQL Server 2012 there are a few enhancements with regards to SQL Server Resource Governor. One of the enhancement is how the resources are allocated. Let me explain you with examples. Configuration: [Read Earlier Post] Reporting Workload: MIN_CPU_PERCENT=0, MAX_CPU_PERCENT=30 Application/OLTP Workload: MIN_CPU_PERCENT=50, MAX_CPU_PERCENT=100 Example 1: If there is only Reporting Workload on the server: SQL Server will not limit usage of CPU to only 30% workload but SQL Server instance will use all available CPU (if needed). In another word in this scenario it will use more than 30% CPU. Example 2: If there is Reproting Workload and heavy Application/OLTP workload: SQL Server will allocate a maximum of 30% CPU resources to Reporting Workload and allocate remaining resources to heavy application/OLTP workload. The reason for this enhancement is for better utilization of the resources. Let us think, if there is only single workload, which we have limited to max CPU usage to 30%. The other unused available CPU resources is now wasted. In this situation SQL Server allows the workload to use more than 30% resources leading to overall improved/optimized performance. However, in the case of multiple workload where lots of resources are needed the limits specified in MAX_CPU_PERCENT are acknowledged. Example 3: If there is a situation where the max CPU workload has to be enforced: This is a very interesting scenario, in the case when the max CPU workload has to be enforced irrespective of the workload and enhanced algorithm, the keyword CAP_CPU_PERCENT is essential. It specifies a hard cap on the CPU bandwidth that all requests in the resource pool will receive. It will never let CPU usage for reporting workload to go over 30% in our case. You can use the key word as follows: -- Creating Resource Pool for Report Server CREATE RESOURCE POOL ReportServerPool WITH ( MIN_CPU_PERCENT=0, MAX_CPU_PERCENT=30, CAP_CPU_PERCENT=40, MIN_MEMORY_PERCENT=0, MAX_MEMORY_PERCENT=30) GO Notice that there is MAX_CPU_PERCENT=30 and CAP_CPU_PERCENT=40, what it means is that when SQL Server Instance is under heavy load under different workload it will use the maximum CPU at 30%. However, when the SQL Server instance is not under workload it will go over the 30% limit. However, as CAP_CPU_PERCENT is set to 40, it will not go over 40% in any case by limiting the usage of CPU. CAP_CPU_PERCENT puts a hard limit on the resources usage by workload. Jeff: Nice Pinal, you should blog about it. [A day passes by] Pinal: Jeff, it is done! Click here to read it. Reference: Pinal Dave (http://blog.sqlauthority.com) Filed under: PostADay, SQL, SQL Authority, SQL Query, SQL Server, SQL Tips and Tricks, T SQL, Technology Tagged: Service Broker

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• SQL Server IO handling mechanism can be severely affected by high CPU usage

  - by sqlworkshops

  Are you using SSD or SAN / NAS based storage solution and sporadically observe SQL Server experiencing high IO wait times or from time to time your DAS / HDD becomes very slow according to SQL Server statistics? Read on… I need your help to up vote my connect item – https://connect.microsoft.com/SQLServer/feedback/details/744650/sql-server-io-handling-mechanism-can-be-severely-affected-by-high-cpu-usage. Instead of taking few seconds, queries could take minutes/hours to complete when CPU is busy.In SQL Server when a query / request needs to read data that is not in data cache or when the request has to write to disk, like transaction log records, the request / task will queue up the IO operation and wait for it to complete (task in suspended state, this wait time is the resource wait time). When the IO operation is complete, the task will be queued to run on the CPU. If the CPU is busy executing other tasks, this task will wait (task in runnable state) until other tasks in the queue either complete or get suspended due to waits or exhaust their quantum of 4ms (this is the signal wait time, which along with resource wait time will increase the overall wait time). When the CPU becomes free, the task will finally be run on the CPU (task in running state).The signal wait time can be up to 4ms per runnable task, this is by design. So if a CPU has 5 runnable tasks in the queue, then this query after the resource becomes available might wait up to a maximum of 5 X 4ms = 20ms in the runnable state (normally less as other tasks might not use the full quantum).In case the CPU usage is high, let’s say many CPU intensive queries are running on the instance, there is a possibility that the IO operations that are completed at the Hardware and Operating System level are not yet processed by SQL Server, keeping the task in the resource wait state for longer than necessary. In case of an SSD, the IO operation might even complete in less than a millisecond, but it might take SQL Server 100s of milliseconds, for instance, to process the completed IO operation. For example, let’s say you have a user inserting 500 rows in individual transactions. When the transaction log is on an SSD or battery backed up controller that has write cache enabled, all of these inserts will complete in 100 to 200ms. With a CPU intensive parallel query executing across all CPU cores, the same inserts might take minutes to complete. WRITELOG wait time will be very high in this case (both under sys.dm_io_virtual_file_stats and sys.dm_os_wait_stats). In addition you will notice a large number of WAITELOG waits since log records are written by LOG WRITER and hence very high signal_wait_time_ms leading to more query delays. However, Performance Monitor Counter, PhysicalDisk, Avg. Disk sec/Write will report very low latency times.Such delayed IO handling also occurs to read operations with artificially very high PAGEIOLATCH_SH wait time (with number of PAGEIOLATCH_SH waits remaining the same). This problem will manifest more and more as customers start using SSD based storage for SQL Server, since they drive the CPU usage to the limits with faster IOs. We have a few workarounds for specific scenarios, but we think Microsoft should resolve this issue at the product level. We have a connect item open – https://connect.microsoft.com/SQLServer/feedback/details/744650/sql-server-io-handling-mechanism-can-be-severely-affected-by-high-cpu-usage - (with example scripts) to reproduce this behavior, please up vote the item so the issue will be addressed by the SQL Server product team soon.Thanks for your help and best regards,Ramesh MeyyappanHome: www.sqlworkshops.comLinkedIn: http://at.linkedin.com/in/rmeyyappan

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• Upgrade to Xubuntu 13.10 - Saucy Salamander

  As a common 'fashion' it is possible to upgrade an existing installation of Ubuntu or one of its derivates every six months. Of course, you might opt-in for the adventure and directly keep your system always on the latest version (including alphas and betas), or you might like to play safe and stay on the long-term support (LTS) versions which are updated every two years only. As for me, I'd like to jump from release to release on my main desktop machine. And since 17th October Saucy Salamander or also known as Ubuntu 13.10 has been released for general use. The following paragraphs document the steps I went in order to upgrade my system to the recent version. Don't worry about the fact that I'm actually using Xubuntu. It's mainly a flavoured version of Ubuntu running Xfce 4.10 as default X Window manager. Well, I have Gnome and LXDE on the same system... just out of couriosity. Preparing the system Before you think about upgrading you have to ensure that your current system is running on the latest packages. This can be done easily via a terminal like so: $ sudo apt-get update && sudo apt-get -y dist-upgrade --fix-missing Next, we are going to initiate the upgrade itself: $ sudo update-manager As a result the graphical Software Updater should inform you that a newer version of Ubuntu is available for installation. Ubuntu's Software Updater informs you whether an upgrade is available Running the upgrade After clicking 'Upgrade...' you will be presented with information about the new version. Details about Ubuntu 13.10 (Saucy Salamander) Simply continue with the procedure and your system will be analysed for the next steps. Analysing the existing system and preparing the actual upgrade to 13.10 Next, we are at the point of no return. Last confirmation dialog before having a coffee break while your machine is occupied to download the necessary packages. Not the best bandwidth at hand after all... yours might be faster. Are you really sure that you want to start the upgrade? Let's go and have fun! Anyway, bye bye Raring Ringtail and Welcome Saucy Salamander! In case that you added any additional repositories like Medibuntu or PPAs you will be informed that they are going to be disabled during the upgrade and they might require some manual intervention after completion. Ubuntu is playing safe and third party repositories are disabled during the upgrade Well, depending on your internet bandwidth this might take something between a couple of minutes and some hours to download all the packages and then trigger the actual installation process. In my case I left my PC unattended during the night. Time to reboot Finally, it's time to restart your system and see what's going to happen... In my case absolutely nothing unexpected. The system booted the new kernel 3.11.0 as usual and I was greeted by a new login screen. Honestly, 'same' system as before - which is good and I love that fact of consistency - and I can continue to work productively. And also Software Updater confirms that we just had a painless upgrade: System is running Ubuntu 13.10 - Saucy Salamander - and up to date See you in six months again... ;-) Post-scriptum In case that you would to upgrade to the latest development version of Ubuntu, run the following command in a console: $ sudo update-manager -d And repeat all steps as described above.

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• How to upgrade Apache 2 from 2.2 to 2.4

  - by Nina

  I was in the process of doing a test upgrade from Apache 2.2 to 2.4.3. I'm using Ubuntu 10.04. I would have upgraded to 12.04 for this to see if the upgrade would go a lot smoother. Unfortunately, I was told it wasn't an option...so I'm stuck using 10.04. The process I did this was: Before attempting this, I have managed to upgrade APR from 1.3 to 1.4 as well since apache told me it was a requirement beforehand: http://apr.apache.org/download.cgi First remove all traces of the current apache: sudo apt-get --purge remove apache2 sudo apt-get remove apache2-common apache2-utils apache2.2-bin apache2-common sudo apt-get autoremove whereis apache2 sudo rm -Rf /etc/apache2 /usr/lib/apache2 /usr/include/apache2 Afterwards, I did the following: sudo apt-get install build-essential sudo apt-get build-dep apache2 Then install apache 2.4 with the following: wget http://apache.mirrors.tds.net//httpd/httpd-2.4.3.tar.gz tar -xzvf httpd-2.4.3.tar.gz && cd httpd-2.4.3 sudo ./configure --prefix=/usr/local/apache2 --with-apr=/usr/local/apr --enable-mods-shared=all --enable-deflate --enable-proxy --enable-proxy-balancer --enable-proxy-http --with-mpm=prefork sudo make sudo make install After the make install, I ended up getting a series of errors that prevented it from installing correctly: exports.c:2513: error: redefinition of 'ap_hack_apr_uid_current' exports.c:1838: note: previous definition of 'ap_hack_apr_uid_current' was here exports.c:2514: error: redefinition of 'ap_hack_apr_uid_name_get' exports.c:1839: note: previous definition of 'ap_hack_apr_uid_name_get' was here exports.c:2515: error: redefinition of 'ap_hack_apr_uid_get' exports.c:1840: note: previous definition of 'ap_hack_apr_uid_get' was here exports.c:2516: error: redefinition of 'ap_hack_apr_uid_homepath_get' Looking for exports.c only leads me back to the httpd-2.4.3 folder. So I'm not sure what these errors mean... Thanks in advance for any help you have to offer!

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• Can't install PHP after apt-get dist-upgrade

  - by WASD42

  I had a server with perfectly running for months classical LAMP installation on Ubuntu 8.04: Linux localhost 2.6.24-23-generic #1 SMP Wed Apr 1 21:47:28 UTC 2009 i686 GNU/Linux DISTRIB_ID=Ubuntu DISTRIB_RELEASE=8.04 DISTRIB_CODENAME=hardy DISTRIB_DESCRIPTION="Ubuntu 8.04.4 LTS" Don't know why I've started apt-get update, apt-get upgrade but everything ended with apt-get dist-upgrade :) Everything gone alright... But now I can't start nor Apache, nor PHP, because PHP was simply deleted. When I'm trying to install it: > apt-get install php5 <...> The following packages have unmet dependencies: php5: Depends: libapache2-mod-php5 (>= 5.2.4-2ubuntu5.17) but it is not going to be installed or php5-cgi (>= 5.2.4-2ubuntu5.17) but it is not going to be installed E: Broken packages When I'm trying to install libapache2-mod-php5: The following packages have unmet dependencies: libapache2-mod-php5: Depends: php5-common (= 5.2.4-2ubuntu5.17) but 5.3.6-6~dotdeb.1 is to be installed E: Broken packages I don't know what 5.3.6-6~dotdeb.1 is and where is this package, because I've already removed dotdeb repository from APT sources :/ Tried to do apt-get update, apt-get upgrade, apt-get install php5 php5-common php5-cli with no success... Don't know what to try next :(

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• Can I have damaged a CPU ?

  - by Pascal

  Hey guys, This is a question I asked on Anantech forums, but I just discovered this community and think this question would fit right in. Here goes: I built a PC around a Q9550 1 1/2 years ago (MoBo is an Asus P5Q deluxe). Specs give 2.83GHz, OC'ed it to 3.40 GHZ without any problem (or so I thought) till 2 months ago. Cooling is provided by stock Intel Fan... 2 Months ago, I began to see random crashes, bios saying CPU overheat error... PC would reboot at OC'ed speed without any problem. Since last saturday and a few more crashes, PC won't reboot at 3.40 GHz, and even at stock speed (2.83 GHz), I got core temperatures of (60 C idle, 95 C under load) on the first two cores. This is the 4 core temperatures I am talking about, not the T-CPU which obvioulsy is lower. Fan is running at a steady 2000 RPM. Questions for you : 1. Is 2000 RPM the normal speed of the Intel fan or is my fan somehow broken (which could explain the overheating). In this case, any recommendation for a good fan for OCing ? 2. Hypothesis I fear is the right one: can the CPU have been slowly damaged over time by this OCing, meaning there is nothing much to do except waiting for it to die ? (As a side note, I am surprised that the 9550 is still around 300 $CDN here... Thought it would have been cheaper with all those i3/i5/i7 around). Any help or advice would be more than welcome...

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• Coffee spilled and went inside CPU...computer not starting

  - by Harpreet

  Today coffee got spilled over my table, and some of it (very less) reached the CPU placed under the table. I think little bit of it got inside the CPU through the front face of the CPU. As that happened the fan started running very fast and made noise. I tried to restart to see if it becomes fine, but the computer didn't start again. First it gave an error of "Alert! Air temperature sensor not detected" and didn't start. Next I tried again multiple times of starting the computer but then it gave some memory error. I was not able to start the computer. Incase there's a problem in hard disk or something related to memory, is there any way we can extract our work or data? I am scared if I am not able to extract my work in case some problem occurs like that. What options would I have? Help! EDIT: I have attached the photo here and you can see the area spilt in red circle. The hard drive electronics have been affected and internal speaker may also have been affected. Any advise on cleaning and if hard drive can work? EDIT 2: Are there any professional services offered to extract data from blemished hard disk, like this one, in case I am not able to run it personally?

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• Windows 7 - svchost high cpu usage.

  - by Leonardo

  Hey guys! I'm having a problem with windows 7 x64 i though it was slow and all then i saw that the cpu usage was always around 80% and started digging through google. there's two svchost consuming around 30% each and in the resources monitor there's a system interrupts consuming 45% all the time, i trid closing the aplications and makes no diference. so i tried some other things that i've found on gloogle like disable system update but didn't work. i'd love some help here. i don't know if it will help but here's my specs: Core 2 duo 4400 ATI radeon 4850 4gb ram DDR2 thanks anyway for your attention :) EDIT So i run the program and i got this info, did i get it right? EDIT As you asked here it is, did i get it right now? the other tcp/ip there's nothing. thanks again! :D EDIT I tried somthing here, i run msconfig and took the services that one of the svchost was using out of the startup and now my cpu is around 50%, but i still would like to make this better, i can't lose that much cpu power just because windows... thanks. EDIT yeah there's nothing i can do here, going to install xp for a while, it's really weird...

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• SkyDrive broken after upgrade to Windows 8.1: "This location can't be found, please try later"

  - by avo

  Upgrading from Windows 8 to Windows 8.1 via the Store upgrade path has screwed my SkyDrive. The C:\Users\<user name>\SkyDrive folder is empty (it only has single file desktop.ini). When I open the native (Store) SkyDrive app, I see "This location can't be found, please try later". I'm glad to still have my files alive online in my SkyDrive account. I tried disconneting from / reconnecting to my Microsoft Account with no luck. Anyone has an idea on how to fix this without reinstalling/refreshing Windows 8.1? From Event Viewer: Faulting application name: skydrive.exe, version: 6.3.9600.16412, time stamp: 0x5243d370 Faulting module name: unknown, version: 0.0.0.0, time stamp: 0x00000000 Exception code: 0x00000000 Fault offset: 0x0000000000000000 Faulting process ID: 0x4e8 Faulting application start time: 0x01cece256589c7ee Faulting application path: C:\Windows\System32\skydrive.exe Faulting module path: unknown Report ID: {...} Faulting package full name: Faulting package-relative application ID: Also: The machine-default permission settings do not grant Local Activation permission for the COM Server application with CLSID {C2F03A33-21F5-47FA-B4BB-156362A2F239} and APPID {316CDED5-E4AE-4B15-9113-7055D84DCC97} to the user NT AUTHORITY\LOCAL SERVICE SID (S-1-5-19) from address LocalHost (Using LRPC) running in the application container Unavailable SID (Unavailable). This security permission can be modified using the Component Services administrative tool. Never was a big fan of in-place upgrade anyway, but this time it was a machine which I use for work, with a lot of stuff already installed on it. Shouldn't have tried to upgrade it in the first place, but was convinced Windows 8.1 is a solid update. Another lesson learnt.

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• High CPU usage in my digitalocean droplet

  - by Ibrahim Azhar Armar

  I am experiencing high CPU usage here is the stats i got from server, the consumption after every restart in 15 minutes go upto 100%, what could go wrong? I have a wordpress copy installed on the server which does not have much traffic, here is the stats that i got from using top command in server. top - 11:46:02 up 12 min, 3 users, load average: 40.89, 16.03, 6.11 Tasks: 132 total, 41 running, 91 sleeping, 0 stopped, 0 zombie Cpu(s): 24.3%us, 61.5%sy, 0.0%ni, 0.0%id, 4.0%wa, 0.0%hi, 0.0%si, 10.2%st Mem: 2050896k total, 1988656k used, 62240k free, 284k buffers Swap: 0k total, 0k used, 0k free, 4712k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 31 root 20 0 0 0 0 R 39 0.0 1:35.53 kswapd0 899 root 20 0 15988 172 0 S 14 0.0 0:05.00 irqbalance 418 syslog 20 0 243m 600 0 S 13 0.0 0:06.85 rsyslogd 944 mysql 20 0 1320m 53m 0 S 12 2.7 0:21.15 mysqld 2357 root 20 0 17344 532 164 R 11 0.0 0:14.27 top 960 root 20 0 246m 3816 0 S 3 0.2 0:08.18 php5-fpm 2431 www-data 20 0 344m 64m 908 R 2 3.2 0:04.23 apache2 2435 www-data 20 0 304m 63m 836 R 2 3.2 0:03.43 apache2 2413 www-data 20 0 349m 63m 920 R 2 3.2 0:07.51 apache2 2465 www-data 20 0 349m 64m 944 R 2 3.2 0:05.04 apache2 2518 www-data 20 0 307m 41m 1204 R 2 2.1 0:01.37 apache2 2406 www-data 20 0 346m 56m 1144 R 2 2.8 0:03.76 apache2 2456 www-data 20 0 345m 55m 1184 R 2 2.8 0:02.67 apache2 2373 www-data 20 0 351m 63m 784 R 2 3.2 0:11.09 apache2 2439 www-data 20 0 306m 35m 916 R 2 1.8 0:02.51 apache2 2450 www-data 20 0 345m 55m 1088 R 2 2.8 0:02.96 apache2 2486 www-data 20 0 299m 10m 876 R 2 0.5 0:01.19 apache2 2523 www-data 20 0 300m 27m 796 R 2 1.4 0:00.99 apache2

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• Which CPU for XEN - LAMP testbed - Budget

  - by deploymonkey

  Dear serverfault knowledgeables, im in a decision dilemma right now, which I can't resolve due to lack of hands on experience. I need to build a testbed for basically virtualizing a LAMP application (os'ses not yet decided) including server side calculations. I'll opt for XEN since it seems better supported by cloud hosters at the moment. The hardware is for a proof of concept for a startup doing saas and might be used for closed live alpha/beta later on. After testing, the testbed might be a) deployed as a colocated white box server b) used as workstation Single socket is enough. We want to have ECC memory for reliability, this excludes most of the consumer line at intel. If intel CPU, then threaded cpu (HT) is preferred have at least 16 gig ram If justified by price and reliability is not too bad, a high quality desktop MB instead of a server MB would be worth a try It came down to the opteron 6128 vs. the xeon 5620 for me after a lot of research, but I don't necessarily have to be right. Which CPU is preferrable, concerning TCO (MB price, power requirements 24/7...) , Opteron 6128 or Xeon 5620? Which one offers better performance in real world applications? (Do You have any other suggestions I probably overlooked?) Thank You for Your consideration

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• Upgrade or replace?

  - by Felix

  My current PC is about four years old, although I have made upgrades to it throughout its existence. The current specs are: (old) Intel Pentium D 2.80Ghz (32K L1 / 2M L2), Gigabyte 945GCMX-S2 motherboard (old) 2.5GB DDR2 (slot0: 512MB @ 533Mhz; slot1: 2GB @ 667Mhz) (new) HIS Radeon HD 4670 - I think this is limited by the motherboard not supporting PCIe 2.0 (?) (old) WD Caviar 160GB - pretty slow (new) WD Caviar Black 640GB (if any more specs are relevant, let me know and I'll add them) Now, on to my question. I've been having performance issues lately, both in video games and in intensive applications. A couple of examples: Android application development (running Eclipse and the Android emulator) is painfully slow (on Linux). I only realized this when, at my new job as an Android dev, both tools are MUCH quicker. (I'm not sure what CPU I have there) The guys at my new job got me NFS Hot Pursuit, in which I barely get like 5-10FPS, even with graphics options turned all the way down My guess is that the bottleneck in my system is my CPU, so I'm thinking of upgrading to a Quad Core i5 + new motherboard + 4GB DDR3 (or more, 'cause I know you'll all jump and say 8GB minimum). Now: Is that a good idea? Is my CPU really a bottleneck, or is the whole system too old and I should replace it? I run Windows 7 on the old, 160GB HDD (which is on IDE, by the way). Could this slow down games as well? Should I get a new drive for Windows if I want to play new games? I know nothing about power supplies. Could that be a problem / will it be a problem if I upgrade to an i5? How come DiRT2 works on full graphics settings (pretty amazing graphics by the way) and NFS Hot Pursuit pulls only 5-10FPS?

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• Cisco 7206vxr cpu reducing

  - by naimson

  I have a 7206VXR (NPE-G2) . At the rate of 140 kpps i gain 80% of cpu . So i looking for ways how to reduce it? So i want to turn off netflow(but don't want to this,monitoring is highly important for me), but it will give me only 10-20% ? At this moment with 84kpps i have 58% sh processes cpu sorted give me this. PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process 109 163534600 537236763 304 35.38% 32.83% 16.85% 0 IP Input 67 829396 52280 15864 0.15% 0.01% 0.00% 0 Per-minute Jobs 68 5542736 3053476 1815 0.15% 0.18% 0.16% 0 Per-Second Jobs 51 635852 1116315 569 0.07% 0.03% 0.02% 0 Net Background 329 120396 4607274 26 0.07% 0.00% 0.00% 0 EIGRP-IPv4 Hello 105 50508 95032488 0 0.07% 0.05% 0.05% 0 IPAM Manager 6 4068580 476916 8531 0.00% 0.07% 0.05% 0 Check heaps 7 7768 3634 2137 0.00% 0.00% 0.00% 0 Pool Manager 8 0 1 0 0.00% 0.00% 0.00% 0 DiscardQ Backgro 10 8 708 11 0.00% 0.00% 0.00% 0 WATCH_AFS 5 0 1 0 0.00% 0.00% 0.00% 0 RO Notify Timers 12 0 2 0 0.00% 0.00% 0.00% 0 ATM VC Auto Crea 9 0 2 0 0.00% 0.00% 0.00% 0 Timers 11 0 2 0 0.00% 0.00% 0.00% 0 ATM AutoVC Perio 13 296 610532 0 0.00% 0.00% 0.00% 0 IPC Event Notifi 16 0 1 0 0.00% 0.00% 0.00% 0 IPC Zone Manager 17 3584 2980311 1 0.00% 0.00% 0.00% 0 IPC Periodic Tim 4 0 1 0 0.00% 0.00% 0.00% 0 EDDRI_MAIN 19 0 1 0 0.00% 0.00% 0.00% 0 IPC Process leve 20 0 1 0 0.00% 0.00% 0.00% 0 IPC Seat Manager 21 96 174453 0 0.00% 0.00% 0.00% 0 IPC Check Queue 14 4 50890 0 0.00% 0.00% 0.00% 0 IPC Dynamic Cach 3 0 1 0 0.00% 0.00% 0.00% 0 cpf_process_tpQ 24 756 305371 2 0.00% 0.00% 0.00% 0 IPC Keep Alive M 25 2340 610561 3 0.00% 0.00% 0.00% 0 IPC Loadometer 22 0 1 0 0.00% 0.00% 0.00% 0 IPC Seat RX Cont 15 0 1 0 0.00% 0.00% 0.00% 0 IPC Session Serv 18 1620 2980310 0 0.00% 0.00% 0.00% 0 IPC Deferred Por 29 0 1 0 0.00% 0.00% 0.00% 0 Exception contro sh run(greped): http://pastie.org/5483194 Hardware: c7200p-adventerprisek9-mz.151-4.M1.bin Cisco 7206VXR (NPE-G2) processor (revision A) with 917504K/65536K bytes of memory. Processor board ID 2xxxxxxx MPC7448 CPU at 1666Mhz, Implementation 0, Rev 2.2 6 slot VXR midplane, Version 2.1

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