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| does jar file deployed without flow running will take memory |
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| jeevan |
 Posted: Thu Sep 06, 2012 2:57 pm Post subject: does jar file deployed without flow running will take memory |
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Grand Master
Joined: 12 Nov 2005
Posts: 1432
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do jar files deployed in a message flow will take memory? if yes, how can we calculate the memory taken by them? is this reflected in memory taken by EG?
Also, when the a message arriaves( huge) and the process dumps it in memory, where does this memory reflect? in jvm memory or EG( which is collection of jvm and other memory?)
thanks
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| lancelotlinc |
| Posted: Fri Sep 07, 2012 5:05 am Post subject: |
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Jedi Knight
Joined: 22 Mar 2010
Posts: 4941
Location: Bloomington, IL USA
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If the flow is not running and a jar is referenced only by that flow, the jar is not loaded into RAM.
To calculate the memory used by a jar, 'ps -elf' on Unix with no flows running, measure the amount of memory used by the process, start the flow and send in one message, measure again the ps-elf, thats how much memory for all operations in your flow. Use jconsole to look at memory in the embedded JVM to see how much memory is actually used by the jar's objects.
Memory for a message is reflected only in ps -elf measurement since the logical message tree consumes C-runtime memory. Objects you created to process that message may consume both C-runtime memory (ESQL for example) and JVM memory.
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| jeevan |
| Posted: Fri Sep 07, 2012 7:38 am Post subject: |
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Grand Master
Joined: 12 Nov 2005
Posts: 1432
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| lancelotlinc wrote: |
If the flow is not running and a jar is referenced only by that flow, the jar is not loaded into RAM.
To calculate the memory used by a jar, 'ps -elf' on Unix with no flows running, measure the amount of memory used by the process, start the flow and send in one message, measure again the ps-elf, thats how much memory for all operations in your flow. Use jconsole to look at memory in the embedded JVM to see how much memory is actually used by the jar's objects.
Memory for a message is reflected only in ps -elf measurement since the logical message tree consumes C-runtime memory. Objects you created to process that message may consume both C-runtime memory (ESQL for example) and JVM memory. |
thanks a lot.
we still do not have access to complete code, but I know one thing for sure, we do not use ESQL. we only use jcn.
But I am suspecting the memory is used improperly because the whole thing might have done in one big loop where the file is read and, hold in the memory, and carried out some other process in the same loop.
Thanks once again |
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