I guess you are using 2.1 and not 1.2?
The problem probably is that you don't set a client id of your subscriber
and thus create a new durable on each start of your subscriber app. So
you have <n> durables instead of 1. Check out the Explorer under
TopicManager/Usage/Active Durable Subscriber how many durables you have.
--
Andreas Mueller, IIT GmbH, Bremen/Germany, http://www.iit.de
SwiftMQ - JMS Enterprise Messaging System, http://www.swiftmq.com
-----Original Message-----
From: "Jason Weinstein" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Date: Wed, 11 Jul 2001 00:35:19 +0200
Subject: [developers] Performance of Durable Subscribers Seems Slow
> Hello,
> I am busy benchmarking SWIFTMQ, (sonicmq, and forianomq)
> on a Windows 2000 Professional Intel 866 mhz 256 RAM
> swiftmq_1_2
> default installation (blocking io, etc)
>
> For the case of
> 2 jvms
> Publish/Subscribe Flow-Control On
> 1 publisher (jvm 1):
> thread continuously publishes a 1 kb PERSISTENT
> ByteMessage to topic
> 1 subscriber (jvm 2):
> creates a durable subscription to topic and waits for
> onMessage callbacks
>
> I am getting a throughtput through the system of about
> 10-11 msgs/sec (This is on the order of 50X slower than
> non-durable PERSISTENT subscriptions).
>
> Question
> >> Are these similiar results to what others have seen given the params
> described? Seem slow?
>
> Observation
> The system seems to be especially busy with IO when using durable
> subscriptions. CPU utilization is never pegged.
>
> Question
> >> Do my results seem correct?
> >> Does unix perform better? Non-blocking IO?
> >> Are there network configurations I can use to improve performance.
> (Network Swiftlet, etc)
> >> etc
>
> Any help would be greatly appreciated. Benchmark code is available if
> needed.
>
> Thanks,
> Jason
> SE
>
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