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From "Torsten Mielke (Created) (JIRA)" <j...@apache.org>
Subject [jira] [Created] (AMQ-3573) Hardcoded defaults for systemUsage not suitable for out of the box
Date Wed, 02 Nov 2011 10:03:32 GMT
Hardcoded defaults for systemUsage not suitable for out of the box 
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                 Key: AMQ-3573
                 URL: https://issues.apache.org/jira/browse/AMQ-3573
             Project: ActiveMQ
          Issue Type: Improvement
          Components: Broker
    Affects Versions: 5.5.1
            Reporter: Torsten Mielke


Right now the default activemq.xml has the entire <systemUsage> section commented out.
If commented, then the default systemUsage as defined in BrokerService.getSystemUsage() applies
and uses these limits:

memoryLimit 64 MB
storeLimit: 10 GB
tempLimit: 100 GB

I don't think these are good default values as in the worst case the broker may use 110 GB
of disk space. Many runtime environments will not have that much disk space and are therefore
in danger of running out of disk space completely. 
IMHO some more sensitive defaults would be 

memoryLimit 64 MB
storeLimit:  1 GB
tempLimit:   1 GB

to prevent the broker from using too much disk space by default. 
I believe most users of ActiveMQ are unaware of these defaults and probably don't expect the
broker to use up to 110 GB of their disk. 

If anyone really needs large store and temp limit, they should explicitly configure for it.


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