On Thu, 2005-02-03 at 19:59, Alan wrote:
I have a server that is experiencing high load values for some
unknown
reason.
How high is high?
It is an AMD64 dual proc box (3000+, I think. Maybe faster.) with
4gigs
of ram. The drive(s) are two SATA drives that are software mirrored.
I am running the 64 bit version of Fedora Core 2. Not certain which
kernel version. (It is maybe a month old.)
I am not hitting swap at all. MySQL rarely even shows up on "top". The
CPU percentage used is almost non-existent.
The load when MySQL is being queried is 0.9 or higher. (Usually 1.0 on
average.)
That is not a high load value.
The queries should not be hammering the box that much. What is
actually
causing the scheduler to choke is unknown at this point.
Any ideas how I can find the cause of the problem?
A previous semi-related message suggested adding "elevator=deadline" to
the kernel options. I have not tried that yet. (I will tonight, but
since this is a live machine and they swiped my test machine, I have to
do this carefully.)
Any ideas? Solutions?
How are you detecting this problem? vmstat? iostat? top?
--
Scot L. Harris
webid(a)cfl.rr.com
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