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| Capacity planning in production - hints? |
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| Testo |
 Posted: Mon Dec 15, 2003 3:03 am Post subject: Capacity planning in production - hints? |
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Centurion
Joined: 26 Feb 2003
Posts: 120
Location: Italy - Milan
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I have a customer with the following production environment:
- AIX
- WMQI 2.1 CSD05
- 2 processors with 2.5GB RAM
the whole system is composed of 100 flows, processing large messages
(integration between SAP and HOST) not very frequently during the day.
Here are the quesitons:
- how many Execution Groups?
- how many flows in each Execution Group?
- does it make sense to parallelise putting the same flows in many
Execution Groups (I would say NO considering the low frequency)?
The only document I found to get some hints is the MQSI Best Practices
from Andrew Humphreys but I would like something more....
Anyone available?
Thanks
Andrea Tedone
AMS IT Specialist |
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| jefflowrey |
| Posted: Mon Dec 15, 2003 5:41 am Post subject: |
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Grand Poobah
Joined: 16 Oct 2002
Posts: 19981
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First off, if you have two processors, it makes sense to have two execution groups - unless AIX can multi-task threads within the same process. Remember that flows run as threads inside the execution group process.
How many flows you put in each, and whether there are duplicate flows in each really depends on the particular flow as much as anything else. If you've got flows with message affinitiy, you don't want to parallelize them at all and you don't want to even assign additional instances. If you've got flows that, when they do run, make heavy use of critical system resources that impact other processes, well this could go either way. You might want to parallelize them in order to slow down the amount of time that the system sees impact. But doing so will increase the actual impact observed.
So it's not really straightforward, nor something that can be answered by someone who hasn't seen the environment.
_________________
I am *not* the model of the modern major general. |
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| kirani |
| Posted: Mon Dec 15, 2003 5:08 pm Post subject: |
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Jedi Knight
Joined: 05 Sep 2001
Posts: 3779
Location: Torrance, CA, USA
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Also, please take a look at WMQI SupportPac IP66 - WebSphere MQ Integrator for AIX V2.1 - Performance report.
_________________
Kiran
IBM Cert. Solution Designer & System Administrator - WBIMB V5
IBM Cert. Solutions Expert - WMQI
IBM Cert. Specialist - WMQI, MQSeries
IBM Cert. Developer - MQSeries
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| Testo |
| Posted: Tue Dec 16, 2003 8:35 am Post subject: Thanks.. |
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Centurion
Joined: 26 Feb 2003
Posts: 120
Location: Italy - Milan
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..Kiran and Jeff for your valuable suggestions.
Cheers,
Andrea |
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| wmqiguy |
| Posted: Wed Dec 17, 2003 7:11 am Post subject: |
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Centurion
Joined: 09 Oct 2002
Posts: 145
Location: Florida
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Might want to take a look at IP03 (WMQI Capacity Planner). A little Java tool that estimates throughput of messages. Not sure of the accuracy, but it does give you a relative idea of how performance is affected by having multiple Compute nodes, database hits, etc. It also take platforms into consideration.
Good Luck!  |
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