LinuxQuestions.org
Support LQ: Use code LQ3 and save $3 on Domain Registration
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 05-13-2006, 12:24 PM   #1
svangati
LQ Newbie
 
Registered: May 2006
Posts: 5

Rep: Reputation: 0
udevd consuming lot of CPU


I am running Fedora Core 4 on a Dell PowerEdge 1750. Recently, I have noticed (from running the top command) that the udevd process is consuming a lot of CPU - approximately 30%. I have never seen this process taking so much of CPU before.

- Kernel version: 2.6.11
- udev version: 058-1

- What could be causing this?
- Is this an hardware issue?
- How do I resolve it?

Thanks for your time.

svangati.
 
Old 05-13-2006, 01:05 PM   #2
raskin
Senior Member
 
Registered: Sep 2005
Location: Russia
Distribution: NixOS (http://nixos.org)
Posts: 1,893

Rep: Reputation: 68
As far as I remember it is a bit old udev for rather fresh kernel.. I had some old udev that made the box boot 3 minutes (2.5 minutes doing udev). Try upgrading both (or at least udev) and post if the results aren't good.
 
Old 05-15-2006, 01:52 PM   #3
svangati
LQ Newbie
 
Registered: May 2006
Posts: 5

Original Poster
Rep: Reputation: 0
Thanks for the response. I updated the udev package to version 071-0.FC4.3. Right after the upgrade, I ran 'top' and saw that
udevd was consuming less between 0.3% - 0.7% of the CPU - much less than the 30% prior to the upgrade. But over the course of the day, it started taking up more percentage. Right now, I see that the range is between 8% - 12%. I have a sinking feeling that this is going to grow...

Also, on the other systems that I have, I see (from running top) that udev is constantly at 0.0%. Does this indicate any hardware related issues on the box that udev is trying to take up CPU resources? If so, what hardware would that be?

Thanks for your help.
 
Old 06-29-2006, 01:14 AM   #4
n9dk
LQ Newbie
 
Registered: Jun 2006
Posts: 1

Rep: Reputation: 0
Any further info on this? I've just started seeing the same thing over the past 2 weeks. udev consumes much less than 1% CPU after a reboot. Within a day it's consuming over 10%. After two days everything is so unresponsive I have to reboot.

I'm on udev 071-0.FC4.3 and kernel 2.6.17.1.

I don't see that yum has updated udev in a long time. I can't imagine what changed (I upgraded the kernel is response to this problem). My next bet is to try FC5.

Davek
 
Old 06-30-2006, 02:03 PM   #5
svangati
LQ Newbie
 
Registered: May 2006
Posts: 5

Original Poster
Rep: Reputation: 0
Quote:
Originally Posted by n9dk
Any further info on this? I've just started seeing the same thing over the past 2 weeks. udev consumes much less than 1% CPU after a reboot. Within a day it's consuming over 10%. After two days everything is so unresponsive I have to reboot.

I'm on udev 071-0.FC4.3 and kernel 2.6.17.1.

I don't see that yum has updated udev in a long time. I can't imagine what changed (I upgraded the kernel is response to this problem). My next bet is to try FC5.

Davek
Davek,

Installing the newer version of udev did not help. I finally took the plunge and rebooted the server (it was a production box). Since then, I have not seen udev chewing up CPU. Not sure why and how the reboot helped. Sorry. Couldn't be of much help.

Sudheer.
 
  


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
udevd consuming lot of CPU svangati Linux - General 3 05-15-2006 05:11 PM
XORG using a lot of CPU resources GreatBrak Ubuntu 1 12-02-2005 03:56 PM
Ubuntu Hoary - Xorg - take up lot of CPU resources JGJones Linux - Newbie 4 03-06-2005 06:04 PM
kernel takes a lot of CPU stephnane AIX 3 04-29-2004 09:41 AM
not using swap / kjournald using a lot of CPU bhatcher Linux - General 3 02-18-2004 11:28 PM


All times are GMT -5. The time now is 09:53 PM.

Main Menu
Advertisement
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