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From ig-aimia <Ian.Gara...@aimia.com>
Subject ActiveMQ 5.8 Message Persistence with LevelDB
Date Wed, 25 Sep 2013 09:27:58 GMT
Hello

I am currently evaluating performance and reliability of ActiveMQ 5.8.0 and
LevelDB with Amazon AWS EBS volumes and provisioned IOPS, using the
activemq-perftest plugin. Message persistence is of primary importance for
my client. When I run my tests with the broker, producer and consumer, I see
very little disk activity (vmstat output blocks). When I run the broker and
producer only (no consumers), I see the expected disk activity/output
blocks. 

I'm assuming that the messages are not being persisted in the first scenario
because of the presence of the active consumers. Is that correct, and if so,
is it possible to disable this behaviour? I see that using KahaDB as the
persistence adaptor, this feature is managed by the
concurrentStoreAndDispatchQueues parameter.

ActiveMQ Version: 5.8.0 
Persistence Adaptor: LevelDB 

Regards
Ian



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