[imp] Newest Horde+IMP+PHP CPU usage

[Jan Schneider]

Quoting Michael M Slusarz <slusarz at bigworm.colorado.edu>:

> Quoting Andrew Morgan <morgan at orst.edu>:
>
> |
> |
> | On Sat, 12 Apr 2003, Stacy J.Dunkle wrote:
> |
> | >   I recently upgraded to PHP 4.3.1, but at first stuck with Horde 2.1
> | > and IMP 3.1. Everything ran OK, with no difference in the CPU usage
> of
> | > my httpd processes.
> | >
> | >   Then the other day, I upgraded Horde and IMP to 2.2.1 and 3.2.1,
> | > respectively. Ever since, the httpd processes now show a much bigger
> | > percentage of CPU usage. For instance, according to my MRTG graphs,
> | > before the upgrade, the httpd processes rarely went above 20% on
> | > average. Since the upgrade, it goes as high as 60% regularly, and
> even
> | > peaked at 100% a few times.
> | >
> | >   Running top, I notice that individual processes run between 10% and
> | > 30% quite regularly. This is not normal for this server.
> | >
> | >   For about a day, I was running the latest IMP on top of the older
> | > Horde, and it was normal. The increase in CPU usage started when I
> | > upgraded Horde.
> | >
> | >   I looked through the various config files, and couldn't find
> | anything.
> | > All of the settings are set to the same values as they were from the
> | > old Horde. There are no databases running on this particular
> Horde/IMP
> | > installation.
> | >
> | >    Is this normal for the newest Horde? Are there any new settings
> that
> | > can be tweaked to calm it down?
> | >
> | > Thanks,
> | > Stace
> |
> | I have seen similar behavior on my system after upgrading.  I upgraded
> | everything at once, so I can't say whether it was only the Horde
> upgrade
> | that did it.
> |
> | There was another thread recently concerning performance.  One of the
> | suggestions mentioned was to install the mcrypt php module.  I haven't
> | tried this yet, but I'd be curious if it makes a difference.
>
> #1 - INSTALL THE MCRYPT MODULE.  This will *drastically* reduce
> performance.
> #2 - If not using mcrypt, you should upgrade to the latest RELENG_2
> version
> of Horde.  I just committed some code from HEAD:
> http://lists.horde.org/archives/cvs/Week-of-Mon-20030407/022471.html
> that Mike committed to HEAD a while ago.  This new code reduces the
> number
> of function calls by a LARGE number and caches function calls to result
> in
> a tremendous impact in speed.

Might this be worth a 2.2.2 release?

Jan.

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