> ----Original Message----
> From: Adrian Brock
> Sent: Monday, March 14, 2005 2:35 PM
> To: Ivelin Ivanov
> Cc: Stan Silvert; Neal Byrd; The Core; Rebecca Goldstein
> Subject: RE: JMS Reference
>
...

> I know you can get about x8 improvement in JBossMQ just by adding
> some simple flow control.
>
> Instead of doing the "one in, one out" policy on the message cache
> when memory is tight (i.e. move some old messages to disk to make
> room for the new messages)
> I did a simple test instead with
> Thread.sleep(1000);
> to slow down the senders and let the receivers clear some memory.
>
> The message throughput went from 1 million messages/hour to 8 million.
> I did this test around JBoss-3.0.7 time when the performance was
> very poor.
>
> I discarded the idea as too simplistic since the mechanism
> requires blocking server threads. But it does show JBossMQ
> could easily be improved if we had the motivation/resources
> to work on the performance without degrading its reliability.
>