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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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  • resolv.conf not working properly with Ethernet in Ubuntu

    - by Mark Z.
    I have a Lenovo X200 laptop on which I am running Ubuntu 9.10. Recently, (I assume after some updating, but I really don't know) my ethernet port stopped working under Linux. A more tech/linux-savvy friend of mine was able to temporarily fix the problem by manually editing the resolv.conf file with the DNS servers he found through his connection. However, after rebooting, the problem came back and now I am looking for a more permanent solution.

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  • Ubuntu Server 12.04 Unable to locate package dhcp3-server

    - by Alex Hope O'Connor
    I have done a fresh install of Ubuntu Server version 12.04 and am trying to install a dhcp server package using the following command: sudo apt-get install dhcp3-server However I get this: Reading package lists... Done Building dependency tree Reading state information... Done E: Unable to locate package dhcp3-server Can someone tell me how to install this package on my server? Thanks, Alex.

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  • How to swap stereo channels in Ubuntu?

    - by Auron
    I'm currently running Ubuntu 9.04. I wanted to swap the stereo channels, but I couldn't find that option in the Volume Control Preferences. Is there a way to do this without touching any configuration file? (I'm not allowed to log as root in this machine)

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  • Install python-psycopg on Ubuntu 9.10

    - by jack
    How can I install python-psycopg (not python-psycopg2) on Ubuntu 9.10 "apt-get install python-psycopg" returns "Package python-psycopg has no installation candidate" I also downloaded source code at psycopg-1.1.21.tar.gz but didn't found "make" command in the archive.

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  • (Ubuntu - Lamp) phpmyadmin install error 404 not found

    - by meyosef
    Hi, I install apache, mysql, php and then phpmyadmin on ubuntu desktop 10.04 version I test apache: localhost with browser and its works. I test mysql with console and its works. I test phpmyadmin http://localhost/phpmyadmin/ and get error 404 not found I see that solution for that brobem, copy /phpmyadmin/ to /www/, but I dont want to put in /www/ to my websites files (maybe I wrong or miss something-please tell me in this case). How this problem can be solved in the best way? Thanks

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  • Ubuntu 12, limit the resolution to 640x480

    - by TimothyP
    How can I set and limit the resolution in Ubuntu 12 to 640x480 There's not much in the xorg.conf file anymore, so I'm guessing this is no longer the place to do it? I can't do it using the GUI either because it doesn't show me the 640x480 option. While setting the resolution the computer is connected to a normal screen but later it will be connected to a screen that only supports 640x480 and doesn't report its supported modes to the computer. The only thing in my xorg.conf (by default) is this: Section "Device" Identifier "Default Device" Option "NoLogo" "True" EndSection

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  • How to install Ubuntu, Windows XP and Windows 7 from scratch as triple-boot system

    - by simon
    I'm currently running Windows XP, but have ordered Windows 7. I want to keep Windows XP on a separate partition, and install Ubuntu as well. In which order should I install the OSs, and is there anything differing from an ordinary single-system install I should keep in mind? For example, does the order of partition make any difference? If I want to have the system drive as "C:" drive in both Win XP and Win 7, what should I do?

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  • Trying to change a ubuntu user's password, Authentication token manipulation err

    - by beagleguy
    hey all, I'm trying to create a local user on a new ubuntu box my admin set up. I'm unable to change the password, I keep getting the error below. The user gets added to the shadow file but I can't get it to set a password. Any ideas? I've googled for over an hour :( thanks! admin@theserver:~$ sudo useradd jamz [sudo] password for admin: admin@theserver:~$ sudo passwd jamz passwd: Authentication token manipulation error passwd: password unchanged admin@theserver:~$

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  • Firefox in Ubuntu : how to automate basic authentication password confirm dialog

    - by golemwashere
    Hi, I have an Ubuntu workstation with Firefox always open on a (autorefreshing) web page protected by basic auth. At startup, I have autologin and automatic Firefox start on the page and I have saved the basic auth credentials. I'd like to confirm in some automated way the username/password dialog box which pops up on the first opening of the page, or I'd like to know if there's any hack to avoid this dialog box. I tried setting the homepage to http://username%3Apassword@myserver/mypage put that doesn't stop confirmation dialog boxes.

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  • Issues with proftpd on ubuntu server

    - by yummm
    I'm in the process of setting up a new server running Ubuntu 9.10 and I need to be able to access my web directory via FTP. I've installed proftpd, opened up port 21 and made sure it was up and running. Everything seems good, but when I try to connect via FTP from my personal computer to the server it times out each time. I've been stuck on this issue for a while now and I would appreciate any help. Any ideas???

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  • How to configure mail server (postfix) on debian 7.0 (Wheety/sid) ubuntu 12.04LTS

    - by shihon
    I am setup postfix on my linode vps using https://help.ubuntu.com/community/Postfix, mail are going to localhost perfectly. Problem is i am configure SASL in postfix ,since i don't have ssl and i can't send any mails to external domains get error "relay access denied". Through google this error i found articles related to SSL, but how can i setup postfix without SSL and send mails to external domain like gmail or yahoomail.

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  • Ubuntu Desktop system restore ?

    - by neolix
    Hello Geeks, We are using all the desktop ubuntu 8.04 to 10.04, we are looking same thing like system resorting to back date like windows feature. Around 500 desktop and 79 server we want to setup. Thanks

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  • join ubuntu server 11.10 to a windows server dns

    - by eyadof
    i have been installed ubuntu server 11.10 and i doesn't specify the domain name during the installation but after i have been edit /ete/resolve.conf with my dns servers which run windows server the dns can't recognise my server name . then i installed likewise-open but that doesn't solve the problem and make some problems with ftp . can someone help me please to join this server to the dns . thanks in advance .

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  • How do I use HP webcam in ubuntu ?

    - by Omkant
    I bought hp-notebook pc in which there was windows vista and webcam was properly working but now I have put ubuntu in my laptop and I want to use my webcam for video-chatting and general video recording and snapshots . Please advise me how should I use my webcam using any driver or software or package?

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