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

Perrin Harkins <[email protected]>
Newsgroups gmane.comp.apache.mod-perl
Message-ID <CAC0_be3WMtJL7Ekuf6aLPQqVdni1cMU65njHtTyYjbw6TgcNrQ@mail.gmail.com>
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
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