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| Clients reading one queue simultanously (MQSeries 5.3) |
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| hubert |
 Posted: Sun Apr 23, 2006 11:39 pm Post subject: Clients reading one queue simultanously (MQSeries 5.3) |
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Newbie
Joined: 21 Apr 2006
Posts: 1
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The target :
- One queue containing a lot of messages
- Each message is get by a client, processed et forwarded, before being deleted from the queue
- The order of the messages is not important
My problem :
My program takes a long time to processed a message because the transformation steps are complex.
So, to get faster, I have launched multiple instances of my program in order to accelerate the rate.
But, the results are not the ones I expected :
- with one instance of the client program, I treated 30 msg/s
- with two or more, I always treated 30 msg/s
PS : If I suppress the transformation steps of the message, the rate is about 200 msg/s.
Is there any limitation with MQSeries 5.3 wich prevent to read messages simultanously from one queue ?
Is the following messages in a queue can be read instead the first one is not completely commited ?
Is there an option in the call or a parameter in the configuration file I forgot ?
Thanks for your help...
_________________
'Hub |
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| fschofer |
| Posted: Mon Apr 24, 2006 4:14 am Post subject: |
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Knight
Joined: 02 Jul 2001
Posts: 524
Location: Mainz, Germany
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Hi,
| hubert wrote: |
| Is there an option in the call or a parameter in the configuration file I forgot ? |
Which ones do you use ?
Greetings
Frank |
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| zpat |
| Posted: Mon Apr 24, 2006 4:19 am Post subject: |
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Jedi Council
Joined: 19 May 2001
Posts: 5866
Location: UK
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Make sure each thread has it's own separate connection handle. Make sure INPUT_SHARED is used on the MQOPEN.
Each thread must operate like an independent program (performing MQCONN, MQOPEN, MQGET etc) and they should multi-task, unless they are being serialised by something other than MQ. |
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