Re: High CPU utilization on RHEL5.6/CentOS5.6

I will see if I can get Perl 5.12 and an associated mod_perl up and
running on the problem machine and see if the CPU utilization goes
down.

Long long ago in a install far far away I did not run into this issue
on FC4 which has very similar packages other than apache (2.0 rather
than 2.2):
Requires: httpd >= 2.0.54-0; perl >= 5.8.6-0; perl-Digest-SHA1 >=
2.10-0; mod_perl >= 2.0.1-0;

On Tue, Jul 26, 2011 at 12:43 PM, Perrin Harkins <[email protected]> wrote:
> On Mon, Jul 25, 2011 at 6:43 PM, Christopher Stanton
> <[email protected]> wrote:
>> I am seeing high cpu utilization under RHEL5.6 which I don't see on
>> FC14. We are talking sub 10% on FC14 vs 80% on EL5. This is on
>> different hardware, but not that different.
>
> Well, you've changed hardware and lots of software versions, so there
> are many things it could be.  The only one that seems unlikely is your
> code, since that didn't change.
>
> I would suspect the major downgrade in Perl as the culprit.  You went
> from 5.12 to 5.8.  To test this, I suggest you install 5.12 on your
> new system and compile mod_perl against it.  If you don't want to
> touch the system mod_perl and apache you can install your own in a
> different location.  I use perlbrew to try out new Perl versions
> locally.
>
> - Perrin
>