Openfire Jabber server

[Paul Lussier]

Hi all,

Is anyone here using the Openfire Jabber server with large numbers of
users?

I have a server running Debian 4 with 2GB RAM on a Dell PowerEdge 850
with 2 cores.  This is a fairly decent machine, and ought to be more
than enough power for running a Jabber server.

However, we are finding that it needs to be whacked fairly frequently.
We've seen Java OOM errors, etc.  We've got about 1400 users, all of
which could be connected simultaneously.

Currently we're running with -Xmx=1800, which I believe is doggone near
the max for a single process under Linux.  Our Java command line options
(set in /etc/default/openfire) are:

DAEMON_OPTS="-Xmx1800m -XX:-UseGCOverheadLimit"

Openfire docs don't seem to have a lot of information on performance
tuning, does anyone here have any experience with tuning this thing for
use in large environments with lots of users ?

Thanks in advance for any ideas!

--
Paul