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From Robbie Gemmell <robbie.gemm...@gmail.com>
Subject Re: Inconsistent behaviour during performance testing
Date Fri, 17 Mar 2017 15:34:05 GMT
On 17 March 2017 at 14:34, Rob Godfrey <rob.j.godfrey@gmail.com> wrote:
> On 17 March 2017 at 10:26, Keith W <keith.wall@gmail.com> wrote:
>
>> Hello Antonin
>>
>> Unfortunately, the Apache mailing lists strip attachments.  Please
>> find an alternative way to share your graphs.
>>
>>
> One option would be to create a JIRA for this performance issue, and to add
> the graphs as attachments to that.
>
> -- Rob
>

Or use an image hosting service.

>
>> Can you tell us more about the tests you are running?
>>
>> Version of the Java Broker?
>> Which client are you using?  Which version?  If the older Qpid JMS
>> Client AMQP 0-x - which protocol are you using 0-10 or 0-91?
>> What are your Direct/Heap JVM memory settings?
>>
>> Availability of memory will have an effect on performance.  There is
>> background here:
>> http://qpid.apache.org/releases/qpid-java-6.1.1/java-broker/
>> book/Java-Broker-Runtime-Memory.html
>> This includes details of the strategy employed to flow transient
>> messages to disk when memory is tight.
>>
>> Kind regards,
>>
>> Keith.
>>
>>
>> On 16 March 2017 at 16:52, Vyborny Antonin
>> <antonin.vyborny@deutsche-boerse.com> wrote:
>> > Hi,
>> >
>> >
>> >
>> > I have run some performance testing measuring the throughput for sending,
>> > receiving and also both in parallel. Please see the image I attached
>> > (sending).
>> >
>> > I have measured with three different message sizes (1024, 10240 and
>> 102400
>> > bytes). I am using from 1 to 20 threads for sending and the weird
>> behaviour
>> > occurs when sending 102400 bytes messages. You can clearly see from the
>> > image that when I use 1-10 threads it is too slow and then suddenly it
>> > became much faster.
>> >
>> > The strange is that this was not just one test case, I run it multiple
>> > times.
>> >
>> > The same testing I performed on different brokers, but only Java broker
>> has
>> > this behaviour.
>> >
>> >
>> >
>> > Is there anything I might be missing? Any misconfiguration? I already
>> tried
>> > to play with JVM memory and it looks like it has some impact to it…
>> When I
>> > increased the memory it became faster since 3rd thread…
>> >
>> >
>> >
>> > Please note I was using asynchronous sending + non persistent delivery
>> mode.
>> >
>> >
>> >
>> > Best Regards
>> >
>> >
>> >
>> > Antonin Vyborny
>> >
>> >
>> >
>> >
>> >
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