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| Releasing memory on execution group |
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| dbeaumont |
 Posted: Wed Nov 26, 2008 10:13 am Post subject: Releasing memory on execution group |
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Newbie
Joined: 10 Oct 2006
Posts: 9
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Message Broker version 6.0.0.8
Windows 2003
I'm using the PASSTHRU function in a compute node, which will return about 200,000 records from an Oracle table.
In checking the Task Manager we see that the memory for the DataFlowEngine is not releasing after this is done processing.
Memory usage started at about 87000k and ended at 524792k.
We have a propagate statement for further processing but this is only being invoked once and we've disconnected the terminal.
The PASSTHRU is returning records directly into an OutputRoot tree. No Environment or LocalEnvironment messages are being
written to. We're setting the OutputRoot to NULL right before the final return (RETURN FALSE).
Any recommendations of how we can release memory without restarting the execution group would be appreciated. |
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| golam1983 |
| Posted: Thu Nov 27, 2008 6:30 am Post subject: |
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Apprentice
Joined: 27 Jun 2008
Posts: 35
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| j.f.sorge |
| Posted: Fri Nov 28, 2008 2:19 am Post subject: Re: Releasing memory on execution group |
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Master
Joined: 27 Feb 2008
Posts: 218
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| dbeaumont wrote: |
...
In checking the Task Manager we see that the memory for the DataFlowEngine is not releasing after this is done processing.
Memory usage started at about 87000k and ended at 524792k.
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We had the same problem and I asked IBM - it is a "feature" in 6.0 and 6.1 that it does not free memory. The execution group will be restarted automatically if it got to big and free the memory in that way. |
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| francoisvdm |
| Posted: Mon Dec 01, 2008 3:06 am Post subject: |
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Partisan
Joined: 09 Aug 2001
Posts: 332
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j.f is correct, it is stated in the documentation somewhere that it will never release the memory while exe group is running. I did the research about 1 month ago and came across it.
When you ran out of memory...the exe group will dump...but then it will restart, not 100% good behavior, but at least it will restart.
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Francois van der Merwe |
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