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Re: [K12OSN] Sky high load average with FF and CentOS?



Take off the flash plugin and see if the load drops.

If a bunch of people all use the same web page built with M$ web tools
(Designed for IE is a clue!) firefox must work like mad to render it. If
it has a mess of flash wiggly things, it _EATS_ cpu time. It doesn't
matter if it firefox 2 or 3 or anything. Some things just perform poorly
in a heavy multi-user environment. Be sure to use noatime and good
swappiness values. 

Where did you get FF3 for Centos? It doesn't ship with FF3, but FF2
instead.

On Thu, 2008-08-21 at 13:20 -0400, David Hopkins wrote:
> An interesting (some might say irrititating) problem.  Rebuilt a
> server with CentOS EL5, upgraded to 5.2  Users are running FF3, Adobe
> Acrobat Reader, and StarOffice.  Things work well until reach around
> 28 users. Then, it just crawls and the load  average shoots up to 20+
> (this is a 4 processor box with 15Krpm SCSI drives in a RAID 1, home
> directories are on a dedicated file server).  It was running FC6 with
> 40+ users without issues last year, but I decided to move to CentOS.
> I have no idea why the system would suddenly become so unresponsive.
> I want to 'guess' that it is FF related, especially based on the
> google searches concerning FF3 and performance.  Also, FF is using is
> using 50%+ of the cpu per user.   I have to admit that I am rather
> upset at the moment with FF3, and when I tried the simple approach to
> untarring a build of FF2, I get all sort of errors related to
> libraries.
> 
> Anyhow, sorry for the rant, but this is happening with the teachers
> just logging in. Students show up next week.
> 
> Sincerely,
> Dave Hopkins
> 
> _______________________________________________
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> K12OSN redhat com
> https://www.redhat.com/mailman/listinfo/k12osn
> For more info see <http://www.k12os.org>
> 
-- 
James P. Kinney III          
CEO & Director of Engineering 
Local Net Solutions,LLC                           
http://www.localnetsolutions.com

GPG ID: 829C6CA7 James P. Kinney III (M.S. Physics)
<jkinney localnetsolutions com>
Fingerprint = 3C9E 6366 54FC A3FE BA4D 0659 6190 ADC3 829C 6CA7


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