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| SAP Xi ( running JMS ) opened more than 400 SRVCONN channels |
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| thipe |
 Posted: Tue Oct 14, 2008 9:21 am Post subject: SAP Xi ( running JMS ) opened more than 400 SRVCONN channels |
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Novice
Joined: 24 Jun 2003
Posts: 19
Location: Brasil - São Paulo
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Hello all .
I could not find a documentation telling what would be the best amount of active SVRCONN channels we should have in our environment .
My situation is :
ps -ef | grep amqzlaa0 | wc -l
397
I've noticed that queue manager runmqsc command is a bit slow than before , and this gave me some concern since the same application will be placed in production .
I've worked on some others companies , and the last one would never allow this amount .... so I'm thinking if we are out of the "standard" or not .
Can you guys give me your opinion .
Thank you ,
Adriano .
_________________
Adriano Alves
São Paulo - Brasil
Websphere MQSeries v5.3 Adm Certified
Websphere MQSeries v 6 Adm Certified |
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| atheek |
| Posted: Tue Oct 14, 2008 1:07 pm Post subject: |
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Partisan
Joined: 01 Jun 2006
Posts: 327
Location: Sydney
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Is there only 1 queue manager in your environment?
ps -ef | grep amqzlaa0 | wc -l will give the number of agent processes running for all the qmgrs in your environment.
To find out for a particular qmgr try
ps -ef | grep amqzlaa0 | grep <QMGR Name> | wc -l
As I understand each amqzlaa0 process can be used to service 64 applications. New proceeses will be spawned if there are more than 64 connection requests. However No of amqzlaa0 process * 64 may not give the number of connections to the queue manager as the queue manager will try to reuse the existing thread pool.
You should try dis conn(*) to see the number of existing connections rather than depending upon the count of amqzlaa0 process.. Also use dis chs(*) to get the count of active channels and this should fit in within the MaxActiveChannels parameter of your qmgr.
As long as you dont get any resource excpetion for running these many connections, I think you might be fine |
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| thipe |
| Posted: Tue Oct 14, 2008 2:03 pm Post subject: |
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Novice
Joined: 24 Jun 2003
Posts: 19
Location: Brasil - São Paulo
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Hi atheek ,
Yes , we have just one queue manager running on this server , acting as a hub and second full repos for a cluster we have in place.
Right now we have 308 active channels , and based on what application guys told us .. this number can reach 700 .
Our channel parameter was changed to 1000 , and this is something I'm concerned ... but as I told before , would this be a reason to be concerned ?
Thanks again !
Adriano.
_________________
Adriano Alves
São Paulo - Brasil
Websphere MQSeries v5.3 Adm Certified
Websphere MQSeries v 6 Adm Certified |
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| atheek |
| Posted: Tue Oct 14, 2008 4:35 pm Post subject: |
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Partisan
Joined: 01 Jun 2006
Posts: 327
Location: Sydney
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A value of 1000 should be normal for a production environment I believe. We have a 1 qmgr environment where the maxChannels and maxActiveChannels are configured to 3500 and 3000 respectively. We have around 450 active channels
Hope you would have done stress testing in your non production environment and if you didn't get any resource exceptions you should be happy to migrate this to prod.. |
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| thipe |
| Posted: Wed Oct 15, 2008 1:04 pm Post subject: |
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Novice
Joined: 24 Jun 2003
Posts: 19
Location: Brasil - São Paulo
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Hi atheek ,
Actually , this is our Pre prod environment , I was concerned about the Queue Manager behavior , so we didn't migrated to Prod yet .
Well , thank you very much for your help on this .
Adriano.
_________________
Adriano Alves
São Paulo - Brasil
Websphere MQSeries v5.3 Adm Certified
Websphere MQSeries v 6 Adm Certified |
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