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From jid1jid1 <j...@dharma.gr>
Subject Re: Weird producer slow performance (with persistence)
Date Wed, 28 Apr 2010 07:57:00 GMT

Thanks for your reply. After I tried it on my PC it became obvious that it is
a disk issue.



Gary Tully wrote:
> 
> That sounds like a disk limit as each send/commit will cause a file sync
> and
> the client is blocked till that completes. With batching, things improve
> as
> the disk writes coalesce.
> 
> It may be interesting to run this little disk benchmark that replicates
> the
> kahaDB writer thread to quantity the effect of the sync on some difference
> machines.
> 
> java -classpath lib/kahadb-5.3.1jar org.apache.kahadb.util.DiskBenchmark
> 
> 
> On 27 April 2010 15:30, jid1jid1 <jid1@dharma.gr> wrote:
> 
>>
>> I use ActiveMQ 5.3.1 with default configuration.
>> My message producer rate for 1 msg / per commit cannot exceed
>> 90msgs/second.
>>
>> I tried using multiple Thread/Sessions, Connections and JVM instances and
>> the rate cannot exceed this (without settings like
>> factory.setUseAsyncSend(true) )
>>
>> The weirdest part is that I get the same 90msgs/sec even in every
>> possible
>> combination and even if I try sending messages to different queues.
>>
>> If I change the usual setting like committing sessions in batches or
>> factory.setUseAsyncSend(true) I go up to 5000 msgs/sec.
>>
>> (BTW, I get the same slow performance even independently if I run my
>> producing application from the same physical box or remotely).
>>
>> Any ideas of what to look for?
>>
>> Many thanks
>> --
>> View this message in context:
>> http://old.nabble.com/Weird-producer-slow-performance-%28with-persistence%29-tp28377685p28377685.html
>> Sent from the ActiveMQ - User mailing list archive at Nabble.com.
>>
>>
> 
> 
> -- 
> http://blog.garytully.com
> 
> Open Source Integration
> http://fusesource.com
> 
> 

-- 
View this message in context: http://old.nabble.com/Weird-producer-slow-performance-%28with-persistence%29-tp28377685p28385845.html
Sent from the ActiveMQ - User mailing list archive at Nabble.com.


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