[ejabberd] Fwd: Re: jabber.org server currently slow?

Peter Saint-Andre stpeter at jabber.org
Thu Oct 28 22:08:56 MSD 2004


Forwarding to the ejabberd list for further discussion...

/psa

> From: Peter Saint-Andre <stpeter at jabber.org>
> Subject: Re: jabber.org server currently slow?
> Date: Thu, 28 Oct 2004 11:38:44 -0600
> Newsgroups: gmane.network.jabber.admin
> Message-ID: <stpeter-42AAA4.11384428102004 at sea.gmane.org>
> 
> In article <418124A7.9070005 at erlang-fr.org>,
>  Mickael Remond <mickael.remond at erlang-fr.org> wrote:
> 
> > Peter Saint-Andre wrote:
> > > In article <20041028161850.GQ22558 at unstable.nl>,
> > >  Andreas van Cranenburgh <andreas at unstable.nl> wrote:
> > > 
> > > 
> > >>On Thu, Oct 28, 2004 at 09:53:22AM -0600, Peter Saint-Andre wrote:
> > >>
> > >>>1. XMPP-compliant as much as possible
> > >>>2. 10,000+ simultaneous client connections
> > >>>3. 1500+ simultaneous server connections
> > >>>4. JUD service (could be via running a jabberd 1.4.3 server in parallel)
> > >>>5. Multi-user chat service (preferably external component)
> > >>>6. Interface with current PostgreSQL installation
> > >>>7. Use existing machine ("zeus") for the router
> > >>
> > >>I think that ejabberd only misses the PostgreSQL point of these
> > >>requirements. It might be adapted to support this, or the current
> > >>database might be imported to ejabberd's database format.
> > > 
> > > 
> > > The last time I talked with Alexey, it seemed that ejabberd would use up 
> > > too much memory -- IIRC, it required several hundred megs for 1000 
> > > users, but we are hitting 10,000 users pretty consistently on jabber.org 
> > > and have only 1G of RAM on our current production machine (though we may 
> > > order a new machine for the production server since we need to order 
> > > some new machines anyway). However, it's possible that the memory issues 
> > > have been solved since then.
> > 
> > We have made some concurrency tests since then. we have been able to 
> > simulate 7000 simultaneous users without any problem. It was on a 
> > machine with 1G of RAM and dual 2,5Ghz CPU. Only one was used as only 
> > one Erlang virtual machine was launch on the computer. The CPU was no 
> > more than 60%. I do not remember the figure for the memory consumption, 
> > but it was quite moderate (Around 150 Mo).
> > 
> > The memory should fit on your hardware, but we need to test it with 
> > usage scenario that are consistent with real use of the jabber.org server.
> 
> That's great! Let's move this thread to the ejabberd list so we don't 
> take up bandwidth on JADMIN talking about ejabberd details.
> 
> /psa
> 
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