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From "James Strachan" <james.strac...@gmail.com>
Subject Re: [activemq-user] AJAX support question
Date Mon, 31 Jul 2006 13:18:24 GMT
On 7/31/06, Vinicius Carvalho <java.vinicius@gmail.com> wrote:
> Thanks James, It's an honor get answered by you, I'm a big fan of you
> projects (activemq and servicemix) I'm using both right now on
> production (servicemix is a very tiny small project, but we're very
> happy within it ;) )

:)


> Just one final question, if you don't mind, you said it runs in a
> single VM, but would mind sharing the info about the server? Is it
> dual? We are planning to run in a dual Xeon 2.8Ghz 8gb RAM, on a first
> stage, later we're gonna need a cluster, with 3 machines like that
> (thanks for activecluster :P )

Those numbers (10,000-14,000 concurrent Ajax clients per JVM) were
achived on a dual opteron box (about $3K) using Sun's Java 5 JVM with
CPU load at about 40%.

James

>
> Regards
>
> On 7/29/06, James Strachan <james.strachan@gmail.com> wrote:
> > BTW I just noticed - the codehaus mail lists are no longer used -
> > please use the Apache Mailing Lists...
> >
> > http://incubator.apache.org/activemq/mailing-lists.html
> >
> > On 7/29/06, James Strachan <james.strachan@gmail.com> wrote:
> > > On 7/28/06, Vinicius Carvalho <java.vinicius@gmail.com> wrote:
> > > > Hello there! I'm planning to use AMQ ajax support in our chat based
> > > > application. I have a few questions though...
> > > > I read the overview of this feature and I'd like to know:
> > > >
> > > > How does AMQ binds clients to their destinations? Does it creates list
> > > > of messageListeners for each jsessionid?
> > >
> > > Yes
> > >
> > > > How does this scale if I have let's say 50 rooms with 30 users on
> > > > each? I'm concerned about the overhead of so many listeners.
> > >
> > > Listeners are very lightweight.
> > >
> > > > Has anyone used it in large scale? Is there performance charts for load
tests?
> > >
> > > Yes - we're working with a customer on scaling out a large deployment
> > > right now. Current tests indicate a single JVM can handle
> > > 10,000-14,000 concurrent Ajax clients each using 30-40 JMS
> > > subscriptions (its a combined chat + real time portfolio view) and
> > > each client getting several messages per second
> > >
> > > --
> > >
> > > James
> > > -------
> > > http://radio.weblogs.com/0112098/
> > >
> >
> >
> > --
> >
> > James
> > -------
> > http://radio.weblogs.com/0112098/
> >
> > ---------------------------------------------------------------------
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> >
> >
>
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-- 

James
-------
http://radio.weblogs.com/0112098/

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