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| How do addition of QMs affect sys resources on repos server? |
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| mqfan |
 Posted: Mon Feb 12, 2007 10:42 pm Post subject: How do addition of QMs affect sys resources on repos server? |
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Novice
Joined: 12 Feb 2007
Posts: 11
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Hello,
MQ Version: 5.3 with CSD 07.(Yes the upgradation to V6 is due in few months  )
AIX: 5.0.1.0
We have a cluster repository running on this server and we are in a process of adding QMs to this (close to 550). We have another cluster repository running on another server.
My question is regarding the resource utilization on the Servers where the cluster repository QMs are running. How do I find how much memory is used by the MQ processes? I just want to know, while we keep on adding QMs, what is the difference that is made on the system resource utilization and the change in memory consumption by MQ processes. We already have added 50 plus QMs to the cluster and this is done for a retailer.
I am not that well versed with UNIX systems and am trying to build up my knowledge in that area too  . Any input or pointers to where I can find more details which may lead to my final goal will greatly be appreciated.
Thanks a lot in advance for your inputs. |
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| jsware |
| Posted: Tue Feb 13, 2007 12:32 am Post subject: |
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Joined: 17 May 2001
Posts: 455
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| mqfan |
| Posted: Wed Feb 14, 2007 8:44 am Post subject: |
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Novice
Joined: 12 Feb 2007
Posts: 11
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Thank you John for a quick response.
In fact the design phase is over and we are implementing the cluster already (i was not involved in design).
I am interested in how to find the memory usage of the AIX server that hosts the full repository, say, now and after 50 more QMs are added to the cluster.
What are the facts that we should take into consideration to find out impact of these additional partial repositories on the server hosting the full repository? Would the mq processes consume more memory on addition of PR to the cluster?
I am doing some home work to get little basics of UNIX systems too. Any help would be appreciated.
Regards, |
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| Nigelg |
| Posted: Thu Feb 15, 2007 1:41 am Post subject: |
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Grand Master
Joined: 02 Aug 2004
Posts: 1046
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Not only the (2) full repos in the cluster are affected; all qmgrs in the cluster are informed of all cluster qmgrs, and partial repos qmgrs are informed of all cluster queues they reference.
There is not much additional memory used on the other qmgrs in the cluster. A cluster qmgr uses about 1k of shared memory, and a cluster queue about 500 bytes. A subscription uses about 200 bytes. You can see the total memory used by running amqrfdm, a IBM support tool for dumping cluster information.
Like this
| Quote: |
CacheType = Dynamic^M
NumberOfBlocksInUse = 2^M
Largest Sequence = 1170763173^M
Channel Sequence = 163252636^M
--------------------------------------------------- ^M
| block | size | used |^M
|-------|---------------------|---------------------|^M
| 0 | 100000 1048576 | FFFA8 1048488 |^M
| 1 | 200000 2097152 | 1CA60 117344 |^M
|--------------------------------------------------------------- ^M
|Data |Hash|Hash| Max | Min |Live |Chngd |Delete|Remove|Total |^M
|Type |Offs|Size|Chain|Chain| | | | | |^M
|------|----|----|-----|-----|------|------|------|------|------|^M
|CLQ | 0|1021| 5| 0| 481| 0| 10| 0| 491|^M
| Size| | | | |114.6k| 0| 2440| 0|117.0k|^M
| Act.| | | | |268.8k| 0| 6296| 0|274.9k|^M
|CLQM:m|1021|1021| 2| 0| 12| 3| 1| 0| 16|^M
| Size| | | | | 2064| 516| 172| 0| 2752|^M
| Act.| | | | | 32.7k| 10.2k| 2912| 0| 45.8k|^M
|CLQM:u|2042|1021| 2| 0| 0| 0| 0| 0| 0|^M
| Size| | | | | 0| 0| 0| 0| 0|^M
| Act.| | | | | 0| 0| 0| 0| 0|^M
|CLQM:c|3063|1021| 2| 0| 0| 0| 0| 0| 0|^M
| Size| | | | | 0| 0| 0| 0| 0|^M
| Act.| | | | | 0| 0| 0| 0| 0|^M
|CLSUB |4084|1021| 27| 0| 2125| 0| 0| 0| 2125|^M
| Size| | | | |456.5k| 0| 0| 0|456.5k|^M
| Act.| | | | |479.6k| 0| 0| 0|479.6k|^M
|---------------------------------------------------------------|^M
|Total | | 2618| 3| 11| 0| 2632|^M
| | |573.2k| 516| 2612| 0|576.2k|^M
| | |781.1k| 10.2k| 9208| 0|800.4k|^M
|---------------------------------------------------------------|^M
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Use these options to drive amqrfdm
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