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https://issues.apache.org/jira/browse/QPIDJMS-402?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16543213#comment-16543213
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Rob Godfrey commented on QPIDJMS-402:
-------------------------------------

Testing on my machines, the machine/operating system certainly seems to 
influence which version is faster.  And on Win 10 I do see *really* poor 
performance.

On my Mac laptop, 0.33.0 was consistently faster:

0.33.0:

Sent: 13362 msg/s Received: 13140 msg/s
Sent: 13680 msg/s Received: 13513 msg/s
Sent: 12571 msg/s Received: 12692 msg/s
Sent: 11124 msg/s Received: 11283 msg/s

0.34.0:

Sent: 9360 msg/s Received: 9360 msg/s
Sent: 9246 msg/s Received: 9246 msg/s
Sent: 9975 msg/s Received: 9974 msg/s
Sent: 9859 msg/s Received: 9858 msg/s

However, on my Dell XPS 15, running Fedora I get

0.33.0:

Sent: 52921 msg/s Received: 49663 msg/s
Sent: 51995 msg/s Received: 50321 msg/s
Sent: 51277 msg/s Received: 48177 msg/s
Sent: 51958 msg/s Received: 48534 msg/s

0.34.0:

Sent: 72084 msg/s Received: 72077 msg/s
Sent: 72134 msg/s Received: 72123 msg/s
Sent: 72049 msg/s Received: 72063 msg/s
Sent: 70504 msg/s Received: 70497 msg/s

Switching over to running Windows 10 on that same Dell XPS 15:

0.33:

Sent: 43435 msg/s Received: 43434 msg/s
Sent: 41245 msg/s Received: 41246 msg/s
Sent: 42785 msg/s Received: 42786 msg/s
Sent: 42807 msg/s Received: 42807 msg/s

0.34:

Sent: 68 msg/s Received: 68 msg/s
Sent: 78 msg/s Received: 71 msg/s
Sent: 77 msg/s Received: 68 msg/s
Sent: 68 msg/s Received: 73 msg/s



> Massive performance degradation in 0.34.0
> -----------------------------------------
>
>                 Key: QPIDJMS-402
>                 URL: https://issues.apache.org/jira/browse/QPIDJMS-402
>             Project: Qpid JMS
>          Issue Type: Bug
>          Components: qpid-jms-client
>    Affects Versions: 0.34.0
>         Environment: Windows 7x64 + Oracle JDK 8u161x64
> Windows 7x64 + Open JDK 8u171x64
> CloudFoundry (Ubuntu Trusty) + Open JDK 8u172x64
>            Reporter: Johan Stenberg
>            Priority: Critical
>         Attachments: QpidJms402_PerfTest.java, qpidjms402.zip
>
>
> This is a followup issue for 
> [http://qpid.2158936.n2.nabble.com/qpid-jms-Severe-performance-issue-after-upgrading-from-0-33-0-to-0-34-0-td7678052.html]
> I am attaching a simple test case that shows the issue. When I use qpid jms 
> 0.33 I get 2000msg/s send + receive on my local machine. When I switch to 
> 0.34 the message rate drops to 20msg/s.
>  
>  



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