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MQSeries.net Forum Index » WebSphere Message Broker (ACE) Support » Dataflowengine.exe and I/O

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TBS
PostPosted: Wed Nov 14, 2007 2:43 am    Post subject: Dataflowengine.exe and I/O Reply with quote

Centurion

Joined: 29 Jan 2007
Posts: 143
Location: Hillerød / Denmark
Hi !

On a windows box my Dataflowengine.exe has a lot of I/O.
If there is persistent messages in the flow.. will the I/O figure in Dataflowengine.exe prosecc or in a MQ process ?

I use ProcessExplore to see the I/O.
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Vitor
PostPosted: Wed Nov 14, 2007 2:51 am    Post subject: Reply with quote

Grand High Poobah

Joined: 11 Nov 2005
Posts: 26093
Location: Texas, USA
DataFlowEngine is a WMB process.

Message persistence is handled by WMQ.
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jefflowrey
PostPosted: Wed Nov 14, 2007 3:02 am    Post subject: Reply with quote

Grand Poobah

Joined: 16 Oct 2002
Posts: 19981
Message persistence may be handled by MQ, but not necessarily by a separate process than the process making the MQ calls...

Yes, using persistent messages could cause an increase in IO activity by the Broker process.

Yes, using persistent messages is slower than using non-persistent messages, because of an increase in I/O activity.

None of this means that your DFE's I/O activity is excessive or that it's causing a problem..
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TBS
PostPosted: Wed Nov 14, 2007 3:32 am    Post subject: Reply with quote

Centurion

Joined: 29 Jan 2007
Posts: 143
Location: Hillerød / Denmark
Thanks for your answer
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