[Kolab-devel] Kolab troubles under high load

[Steffen Hansen]

On Monday 02 May 2005 10:17, Matt Douhan wrote:

> It seems like the FB generation is "dropped" by the server under high
> load and the synch can take up to 1 hour for a small INBOX of about
> 600 emails.

Is that the imap sync taking time or the freebusy creation?

> I also setup a small test env, with a kolab server and a DB backend
> on a second machine that sends a 200k attachment to a randomly
> selected kolab user every 2 seconds, then I start n number of these
> testscripts, and it does not take long before the server chokes.
>
> I also tested the same onto a exim frontend server we use that also
> runs amavaisd / clamscan, and it can handle the same load easily so I
> am wondering if the kolab filter, may be the culprit here, is there a
> way to bypass the kolab filter and still keep functionality? or at
> lest bypass for testing purposes to see what is going on?

Please first try to increase the number of kolab filters allowed to run 
concurrently. Edit /kolab/etc/kolab/templates/master.cf.template and 
replace the number 1 in the lines starting with kolabfilter and 
kolabmailboxfilter with something larger (for example 100, or 0 to use 
the global default, which is 100).

After editing the template, remember to run /kolab/sbin/kolabconf.

regards
-- 
Steffen Hansen          |       Klarälvdalens Datakonsult AB
Senior Software Engineer|       http://www.klaralvdalens-datakonsult.se
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