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| Yet another Load Balancing question - Multiple Clusters |
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| matthewmatcham |
 Posted: Fri Jun 04, 2010 12:55 am Post subject: Yet another Load Balancing question - Multiple Clusters |
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Novice
Joined: 06 Sep 2006
Posts: 12
Location: UK
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I've set up a Cluster with 3 QMs, one of which is acting as a Gateway with no application queues defined. My two target QMs are for two Message Brokers. The workload algorithms are standard round-robining. All is working fine, however some specific functionality that I was hoping to see isn't happening.
Each QM is using a namelist of 3 Clusters (LOW,MEDIUM,HIGH). I have 3 queues on each of my two target QMs; Q1 is in the LOW Cluster, Q2 in MEDIUM, and Q3 in HIGH. I was hoping to create some Service Classes to allow more granularity in my round-robining, to ensure that any intensive Broker flow messages are distributed evenly between the two servers.
The reality is that my separate Clusters are being ignored, and the round-robining is just happening at QM level. I've been rummaging through the manuals but I can't get a clear picture on whether this is possible and I've missed a trick, or if this just isn't possible using Cluster Namelists.
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| PeterPotkay |
| Posted: Fri Jun 04, 2010 2:25 am Post subject: |
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Poobah
Joined: 15 May 2001
Posts: 7722
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| Mr Butcher |
| Posted: Fri Jun 04, 2010 2:29 am Post subject: |
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Padawan
Joined: 23 May 2005
Posts: 1716
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i think it may work with different channel for each cluster. but thats just a guess, and ti raises the question if that really makes sense. maybe the cluster workload exit is what you need.
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Regards, Butcher |
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| matthewmatcham |
| Posted: Fri Jun 04, 2010 3:44 am Post subject: |
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Novice
Joined: 06 Sep 2006
Posts: 12
Location: UK
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Thanks, I was using CLUSNL on the channels. This is working now with the separate cluster channels. And you're right, on reflection point 12 is very clear on this.
| Mr Butcher wrote: |
| maybe the cluster workload exit is what you need |
I think that as long as I stick to just a few Cluster 'classes' then this is a reasonable option - my channel administration is certainly manageable, and I'm comfortable with the extra repository communication generated from this. Do you think cluster workload exits would be more efficient?
Cheers |
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| mvic |
| Posted: Fri Jun 04, 2010 8:25 am Post subject: Re: Yet another Load Balancing question - Multiple Clusters |
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Jedi
Joined: 09 Mar 2004
Posts: 2080
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| matthewmatcham wrote: |
| The reality is that my separate Clusters are being ignored, and the round-robining is just happening at QM level. I've been rummaging through the manuals but I can't get a clear picture on whether this is possible and I've missed a trick, or if this just isn't possible using Cluster Namelists. |
There have been a lot of fixes in the area of cluster workload balancing over the years, and the docs have had an update, if I remember correctly. Are you working from the latest manuals, and the latest MQ code? |
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