LinuxQuestions.org
View the Most Wanted LQ Wiki articles.
Go Back   LinuxQuestions.org > Forums > Linux Forums > Linux - Software
User Name
Password
Linux - Software This forum is for Software issues.
Having a problem installing a new program? Want to know which application is best for the job? Post your question in this forum.

Notices

Reply
 
Search this Thread
Old 09-02-2004, 02:47 PM   #1
linuxboy69
Member
 
Registered: Oct 2003
Distribution: Redhat 9
Posts: 138

Rep: Reputation: 15
Why do I have a High System CPU Usage Bottleneck


Here is the output of top:

CPU0 states: 18.0% user, 77.3% system, 0.0% nice, 4.1% idle
CPU1 states: 21.5% user, 74.0% system, 0.0% nice, 3.4% idle
CPU2 states: 13.3% user, 81.0% system, 0.0% nice, 5.1% idle
CPU3 states: 28.5% user, 67.2% system, 0.0% nice, 3.3% idle

as you can see, I have 4 CPUs on the same machine that are bogged down by System useage???? What could cause this. The only two services that I have running on this server are NFS and MySQL.

Anyone know what might cause this all of a sudden. I was reading that this can sometimes be caused by NFS. I am still looking into it.

Thanks in advance
 
Old 09-02-2004, 03:24 PM   #2
stickman
Senior Member
 
Registered: Sep 2002
Location: Nashville, TN
Posts: 1,552

Rep: Reputation: 53
Which process seems to be taking all of CPU resources?
 
Old 09-02-2004, 03:38 PM   #3
linuxboy69
Member
 
Registered: Oct 2003
Distribution: Redhat 9
Posts: 138

Original Poster
Rep: Reputation: 15
oops sorry, this is the later part of top:
Code:
 4540 mysql3    25   0  494M 494M  3124 R    87.6 24.6  14:35 mysqld
 2322 mysql3    25   0  493M 493M  3124 R    68.3 24.5  73:42 mysqld
 1313 mysql3    25   0  493M 493M  3124 R    65.9 24.5 101:42 mysqld
 1314 mysql3    25   0  493M 493M  3124 R    59.0 24.5 101:11 mysqld
 4637 mysql3    25   0  494M 494M  3124 R    49.6 24.6   7:11 mysqld
                                               ^
                                              CPU

Last edited by linuxboy69; 09-02-2004 at 03:53 PM.
 
Old 09-02-2004, 03:55 PM   #4
linuxboy69
Member
 
Registered: Oct 2003
Distribution: Redhat 9
Posts: 138

Original Poster
Rep: Reputation: 15
Here is the iostat -x for the device that the mysql service is running on:

Code:
Device:  rrqm/s wrqm/s   r/s   w/s  rsec/s  wsec/s avgrq-sz avgqu-sz   await  svctm  %util
sdc        7.52  20.50  9.52 49.13  136.26  560.69    11.89   135.71 2314.02  20.39  11.96
sdc1       7.52  20.50  9.52 49.13  136.26  560.69    11.89   135.71 2314.02  20.39  11.96

Last edited by linuxboy69; 09-02-2004 at 04:03 PM.
 
  


Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
High Cpu usage untak Debian 21 01-23-2007 06:21 AM
cpu usage high corbintechboy VectorLinux 2 07-27-2005 08:11 AM
Rhythmbox high cpu usage Pipedream Linux - Software 0 11-07-2004 03:17 PM
CUPS and High CPU usage Malibyte Linux - Software 11 10-21-2004 09:56 AM
xine high CPU usage Phathead Slackware 1 07-14-2004 01:16 AM


All times are GMT -5. The time now is 09:31 AM.

Main Menu
My LQ
Write for LQ
LinuxQuestions.org is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
Syndicate
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
identi.ca: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration