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Date: Tue, 17 Feb 2009 11:13:36 +0000
Message-ID: <3a73c17c0902170313w540b0204k51cda9d4bc5e6c42@mail.gmail.com>
Subject: Re: Severe performance hit upgrading to 5.2.0 from 5.1
From: Gary Tully <gary.tully@gmail.com>
To: users@activemq.apache.org
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Seems odd, Are you using a transacted session?

Could you post your code so we can give it a whirl? possibly attach it
to a jira issue.

2009/2/17 hackingbear <hackingbear@gmail.com>:
>
> 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
>>
>>
>
> --
> View this message in context: http://www.nabble.com/Severe-performance-hit-upgrading-to-5.2.0-from-5.1-tp22016698p22051194.html
> Sent from the ActiveMQ - User mailing list archive at Nabble.com.
>
>


-- 
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