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From Christian Posta <christian.po...@gmail.com>
Subject Re: ActiveMQ topic vs queue
Date Tue, 19 Mar 2013 14:05:10 GMT
<systemUsage> entries will set limits for mem, store, temp, etc for entire
broker. if you comment them out, they'll revert to default entries
http://activemq.apache.org/producer-flow-control.html#ProducerFlowControl-Systemusagewhich
are quite low depending on your requirements.

The default for memoryUsage is 64MB but you set your queue memoryLimit to
100MB. That could very well lead to OOM.

Please take a look at
http://activemq.apache.org/producer-flow-control.html
http://activemq.apache.org/javalangoutofmemory.html
http://www.christianposta.com/blog/?p=273


On Mon, Mar 18, 2013 at 11:58 PM, comradgre <comradgre@gmail.com> wrote:

> Hi!
> Current system have about 100 messages per second. Could you pls help me
> avoid flooding issue and improve performance of current activeMQ.
> Please see attached activemq.xml
> activemq.xml
> <http://activemq.2283324.n4.nabble.com/file/n4664859/activemq.xml>
> Current MQ have 2 queues: inq and outq.
>
> Sometimes i think, that it will be better to switch off producerFlowControl
> and enable <systemUsage>, but i don't understand how to change current conf
> file to have it (should I disable memoryLimit of policyEntry, what
> systemUsage elements should be enable).
>
> Please help me, thanks!
>
>
>
> --
> View this message in context:
> http://activemq.2283324.n4.nabble.com/ActiveMQ-topic-vs-queue-tp4664859.html
> Sent from the ActiveMQ - User mailing list archive at Nabble.com.
>



-- 
*Christian Posta*
http://www.christianposta.com/blog
twitter: @christianposta

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