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| Multithreading in Message Broker |
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| geethgubi |
 Posted: Mon Jun 22, 2009 1:34 pm Post subject: Multithreading in Message Broker |
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Apprentice
Joined: 18 Dec 2008
Posts: 44
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| I have a message flow which is running in multi-threading mode. 5 threads are running. Its been running since 3 months, there are no issues till now. Now we got an issue, not sure whether its a threading issue or not. Among these 5 threads, 1 thread is alloted for processing 46,000 records. Other threads (each one) is alloted with some 5 to 6 records processing at a time. Now only when the thread is processing 46000 records only, we get lot of records unprocessed for long time (message lying in the input queue longer) but when we turn off processing these 46,000 records the other processing is flowing thro' properly. I could not understand what is happening when we turn on 46,000 records. Can someone help me to find out whats happening when we enable processing these records. |
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| rajmq |
| Posted: Mon Jun 22, 2009 10:03 pm Post subject: |
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Partisan
Joined: 29 Sep 2002
Posts: 331
Location: USA
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By any chance did you look up the memory utilization? How do measure the 1 thread is processing 46000 records?
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IBM Certified System Administrator - WebSphere MQ V6.0
IBM Certified System Administrator - WebSphere Business Integration Message Broker V6.0 |
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| mymq |
| Posted: Tue Jun 23, 2009 6:48 pm Post subject: |
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Centurion
Joined: 01 Mar 2007
Posts: 101
Location: US-Greenwille
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what is your broker version, OS?
did u get a chance to look at the syslog for any error?
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| telecoda |
| Posted: Wed Jun 24, 2009 12:48 am Post subject: |
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Novice
Joined: 05 Feb 2008
Posts: 15
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As you are processing a large number of messages in a single flow is there any contention occurring outside of the flow?
For example is the flow processing 46,000 records locking rows in a database that are preventing the other flows from processing?
Are the messages being processed in a single transaction or message by message? |
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| geethgubi |
| Posted: Wed Jun 24, 2009 12:19 pm Post subject: |
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Apprentice
Joined: 18 Dec 2008
Posts: 44
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These are processed by message by message. I dont think lock would be acquired as we have DB2_SKIPINSERTED, DB2_EVALUNCOMMITTED
, DB2_SKIPDELETED enabled for Insert, update and delete. |
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