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| dunc |
 Posted: Mon Apr 06, 2009 8:01 pm Post subject: How to increase the maximum memory allocated to a Windows EG |
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Newbie
Joined: 25 Sep 2007
Posts: 6
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Hi
I was wondering how you increase the maximum memory allocated to an execution group under Windows (not Java max mem)? I have read in other posts that the default maximum memory allocated to a EG under windows is 1GB - how do you increase this to the 2GB Windows maximum?
I have a Message Flow that I have been asked to load test to make sure it scales, but the EG is abending on ESQL nodes when I get over a certain number of records (Failed to allocate memory error) and this always occurs when DataFlowEngine.exe gets up to around 1GB. Java still reports loads of free memory.
Any help appreciated - Duncan |
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| fjb_saper |
| Posted: Tue Apr 07, 2009 3:25 am Post subject: Re: How to increase the maximum memory allocated to a Window |
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Grand High Poobah
Joined: 18 Nov 2003
Posts: 20768
Location: LI,NY
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| dunc wrote: |
Hi
I have a Message Flow that I have been asked to load test to make sure it scales, but the EG is abending on ESQL nodes when I get over a certain number of records (Failed to allocate memory error) and this always occurs when DataFlowEngine.exe gets up to around 1GB. Java still reports loads of free memory.
Any help appreciated - Duncan |
Missing a propagate somewhere? 
_________________
MQ & Broker admin |
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| dunc |
| Posted: Tue Apr 07, 2009 12:06 pm Post subject: Re: How to increase the maximum memory allocated to a Window |
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Newbie
Joined: 25 Sep 2007
Posts: 6
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| fjb_saper wrote: |
Missing a propagate somewhere? |
I wish it was that simple.
As I was saying this problem occurs under load testing; in normal operation, the message flow completes correctly.
The execution group always abends when total memory gets close to 1GB, I have also seen it abend in different places. This seems to supports what I have read (on here) that the default max mem for a windows execution group is 1GB. |
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| WMBDEV1 |
| Posted: Tue Apr 07, 2009 1:01 pm Post subject: |
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Sentinel
Joined: 05 Mar 2009
Posts: 888
Location: UK
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| How big are the input messages? Do you have additional instances on the flow running? |
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| vandi |
| Posted: Tue Apr 07, 2009 6:10 pm Post subject: |
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Acolyte
Joined: 13 Dec 2008
Posts: 67
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| WMBDEV1 |
| Posted: Wed Apr 08, 2009 12:46 am Post subject: |
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Sentinel
Joined: 05 Mar 2009
Posts: 888
Location: UK
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This link describes changing the stack size, not the heap. I wouldnt do this and do not believe it will resolve your issue. |
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