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MQSeries.net Forum Index » General IBM MQ Support » Why the number of process amqzlaa0 and will grow quickly?

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flattop
PostPosted: Sun Dec 25, 2005 8:14 pm    Post subject: Why the number of process amqzlaa0 and will grow quickly? Reply with quote

Newbie

Joined: 25 Dec 2005
Posts: 3

the number of process amqzlaa0 and amqrmppa will grow quickly?
I am on AIX mq5.3
Can you tell me the condition when can this happen?
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Tibor
PostPosted: Mon Dec 26, 2005 4:05 pm    Post subject: Reply with quote

Grand Master

Joined: 20 May 2001
Posts: 1033
Location: Hungary

1. amqrmppa is the listener pooling process and amqzlaa0 is the local agent process.
2. when your qmgr is running on AIX4, these processes are working in single-thread mode (not sure ). On AIX5 there are tuning parameters for multi-threads.

So your qmgr serves a lot of client connections the number of processes can become to a high. But more investigation is strongly recommended.

HTH,
Tibor
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flattop
PostPosted: Mon Dec 26, 2005 10:22 pm    Post subject: thank you Reply with quote

Newbie

Joined: 25 Dec 2005
Posts: 3

"MaxChannels, MaxActiveChannels"

I used the default value is 100, I use the
netstat -an |grep 14141 |grep tcp4 |grep EST|wc
to check the maxActiveChannel number.

when the maxActiveChannels achieve 100, then the process number will grow quickly ,why ? I use AIX 4
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Tibor
PostPosted: Tue Dec 27, 2005 2:46 am    Post subject: Reply with quote

Grand Master

Joined: 20 May 2001
Posts: 1033
Location: Hungary

You can check your channel from qmgr's view in this way:
Code:
echo "dis chs(*)" | runmqsc <qmgrname> | grep CHANNEL | sort | uniq -c
If sum of these number differs from netstat, query a list of non-established connection on listener port. There are a lot of parameters at network level.

Tibor
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