Hi, any help on this? 5.2 shouldn't be a few times slower, but I can't find
out why. All the other configs are out-of-box defaults.
hackingbear wrote:
>
> Hi,
>
> I upgraded to 5.2.0 last week and witness my application performance
> dropped substantially. I wrote a simple test which does:
>
> producer:
> loop
> create a temporary reply queue
> send a short object message to a non-persistent, non-durable queue
> read from reply queue
> delete the reply queue
>
> consumer:
> read the message
> send the same object back to the reply queue
>
> In 5.1, I get to 91 msg/s but in 5.2.0, I only get 17 msg/s
>
> The configurations are pretty much identical between the two versions:
> 5.2: -Xmx512M -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode
> -Dorg.apache.activemq.UseDedicatedTaskRunner=false
> 5.1: -Xmx386m -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode
> -Dorg.apache.activemq.UseDedicatedTaskRunner=false
>
> prefetch=1 for both versions.
>
> (Notes worthy: the test program producer/consumers are using the 5.2
> activemq-all.jar, only the broker server is changed in the tests.)
>
> I know the implication of the UseDedicatedTaskRunner and prefetch, but
> here they are identical for both versions.
>
> Why is there such a huge performance hit in 5.2?
>
> Thanks
>
>
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