Re: [cobalt-users] HELP HELP HELP RAQ4r CPU slowly creeps up till server is un-usable

[Steelhead <bill@xxxxxxxxxxxxxxx>]

comment at the bottom.

On Thu, 2003-03-20 at 20:08, Matt wrote:
> Hello,
>  
> Alright this is a really weird issue and I am hoping that someone may have
> some insite on how to fix this- it has become to frustrating for words...
>  
> What Happened:
> -Tuesday night around midnight my RAQ4r decided to max out the CPU rendering
> SMTP useless and web pretty much the same. Every since then I have had to
> pretty much reboot the server ever hour... After that the server usually
> takes an hour for the CPU to ramp up to a critical state.
>  
> What I have done.
> - First I though it was the mirroring between my two drive (I have the
> latest kernel installed---slow, fixed with echo         ETC... command) that
> wasn't it..
> - Second I thought it was Tomkat- Removed it from my httpd.conf file.. It
> doesn't start-- Which is good-- cause it would   take forever to get the
> thing started.. I though that was eating my CPU... Nope! Wasn't it..
> - Third I have read every log file I can think of.. /var/log--> messages,
> secure, maillog, xferlog-- CD'd  to httpd read access, error logs and I have
> found nothing suspicious other that the usual CPU load to high,, POP login
> rejected cause Sendmail has shut it self off due to the 20% process limit
> (Which I have gone into the Sendmail.cf file  and upped it to 80 just get
> users mail to send,, ;-( This is not good and I know that but,, I am in a
> bad situation..
> - Fourth I have tailed all of the logs above, mainly the access log in httpd
> and watch the CPU usage- Hoping to find the ONE site that is killing my
> CPU.. But I have yet to find it.. I have also shut down the sites that I
> suspected- but this did not help either.. It's just a gradual process- that
> the naked eye's cannot see..
>  
> If anyone has experienced this, or heard about IT through someone's second
> cousins grandpa's brothers best friend ;-)) and can tell me about it or how
> they fixed it-- Or another way to track it down IT WOULD BE SO GREATLY
> APPRECIATED!! I have put two day's into this problem and it's driving me
> nutz!
>  
> Thank You,
>  
> Matt
> 
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As I  have watched this message thread I have come to wonder...
You suspected a raid issue following a recent update. 

Subject: 	[cobalt-users] RAQ4 RAID/Mirroring Causing high CPU Usage?
Date: 	19 Mar 2003 15:22:03 -0800

I expect the issues are interrelated. I looked at your top and noticed
you are not using any swap, so i would look back in the direction of
hard drive writing.  try turning off the raid temporarily and see if the
issue continues.

another wooden  nickle.
Bill