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From cobrien <>
Subject Re: systemUsage in activeMQ.xml
Date Mon, 28 Jun 2010 17:10:21 GMT


The <memoryUsage> element is used to set the maximum amount of memory the
broker will use.
The <tempUsage> element is used to set the maximum size of the message store
used for non- persistent messages that overflow from memory awaiting
dispatch. This overflow typically occurs when producer flow control has been
The <storeUsage> element is used to control the maximum size of the ActiveMQ
message store (i.e., the store used for persistent messages).

ActiveMQ reference guide at

radha_mit wrote:
> Hi,
>     we are planning to shift our jms provider to activeMQ from our next
> product release. 
>     our first work involving activeMQ is to send 100 persistent messages
> each of size 2.5 KB per second, on a JMS Topic.
>     We plan to use AMQ PersistenceAdapter for that.
>    Now, we have some doubts in systemUsage tab in the activeMQ.xml file.
>   can anyone eloborate on what exactly is meant by memoryUsage, storeUsage
> and tempUsage ?
>   is there anylink in the activeMQ website that describes that ?
> Thanks,
> Radha

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