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MQSeries.net Forum Index » IBM MQ Performance Monitoring » MQMON stat shows different MsgIn and Msgout values

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guest468
PostPosted: Fri Jan 16, 2009 11:38 am    Post subject: MQMON stat shows different MsgIn and Msgout values Reply with quote

Centurion

Joined: 30 May 2006
Posts: 146
Location: NY
Hi,
I am seeing some difference in MsgsIn and MsgsOut vlues for some of the queues while using MQMON stats. Some of them have a huge difference (In:30 to Out:3574).

Any idea?Thanks.
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PeterPotkay
PostPosted: Fri Jan 16, 2009 12:38 pm    Post subject: Reply with quote

Poobah

Joined: 15 May 2001
Posts: 7722
Your apps are getting messages and backing them out over and over and over. Every get counts as a new get. Every backout does not count as a put.
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Peter Potkay
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guest468
PostPosted: Fri Jan 16, 2009 9:07 pm    Post subject: Reply with quote

Centurion

Joined: 30 May 2006
Posts: 146
Location: NY
Thanks Peter.
And is there any significant performance impact on the QMGR/server if i use MQMON frequently (say once every 10 minutes)
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PeterPotkay
PostPosted: Sat Jan 17, 2009 7:26 am    Post subject: Reply with quote

Poobah

Joined: 15 May 2001
Posts: 7722
Most monitoring tools use the Rest Queue Statistics command to get the info they need to desplay how many messages are going in and out of a queue. I have my monitoring tool, QPASA, do it every 60 seconds. Others do it every 15 seconds I have heard.

Will it have an impact if you do it every 10 minutes? I would be surprised if it did, but I don't know how close your systems are to their limits of performance.
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Peter Potkay
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