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From "James Strachan" <>
Subject Re: consumers stop when queue is full
Date Tue, 30 May 2006 12:21:28 GMT
If you want to deal with bursts of fast producers and if it takes a
long time to process messages on the queue then you either need to
allocate lots of RAM for the non-durable queues to be able to use -
otherwise the non-durable queues will run out of RAM - or a better
option is just to use durable queues which can deal with huge queues
(millions of messages on the queue) without any issue.

If you have a problem with the performance of producers on a durable
queue - and you kinda want the semantics of non-durable queues - just
enable asynchronous sending which means your producers will be about
the same high performance as non-durable queues - but you will be able
to deal with very fast producers and slow consumers very nicely.

On 5/29/06, Kim Pepper <> wrote:
> We have been having some major issue with activemq (both 3.2 and 4.0
> versions) in our production environment. We have consumers which can take
> between approx 5-120 secs to process a message. When the queue is reasonably
> empty, the messages are consumed in at a good rate.
> The messages are produced quicker than they can be consumed, and the quick
> fills over a couple of hours.
> When we configured activemq to be non-persistent, the queue fills and the
> producers are blocked. I assume this is the default strategy of the
> non-persistent in-memory queue.
> However, the consumers also seem to stop consuming messages. The end result
> is there are no more messages being consumed.  The load on the servers is
> less than 1% and there is plenty of free cpu, memory and disk space.
> I would love to hear from anyone who has had experience with activemq in a
> production environment to do with configuring activemq.
> We are getting quite desperate, and have starting developing a solution in
> xmpp (jabber) as a work-around.
> Any help would be greatly appreciated.
> Kim
> ________________________________
> Kim Pepper
> Mooter Media
> Sydney, Australia
> --
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