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| KAKEZ |
 Posted: Mon Nov 04, 2002 11:25 pm Post subject: How many MQClients can reasonably connect to an HPUX Server? |
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Centurion
Joined: 10 Oct 2002
Posts: 117
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Hi,
- is there somebody having experience on the maximum (or great)number of MQClients that can be connected to a such server without having bad MQSeries performance at the server?
- same thing on a Sun Solaris server?
- is there some documentation about that?
Thanks for help.
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| neilgc |
| Posted: Tue Nov 05, 2002 3:20 am Post subject: |
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Novice
Joined: 03 Jul 2002
Posts: 20
Location: London
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| nik_shaw |
| Posted: Tue Nov 05, 2002 3:21 am Post subject: |
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Novice
Joined: 17 Jan 2002
Posts: 11
Location: London
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We have been conducting some tests in the past week on seeing how many JMS sessions we can connect to a MQ single listener running on both Solaris and NT.
The results we obtained were:
NT: 3500 concurrent connections
Solaris: 650 concurrent connections
Both machines had 512Mb of RAM
By default only 100 connections are allowed out of the box, this can be changed by editing the mqs.ini file for the MAXChannels parameters
Various semaphore / kernel settings were also tried to see if we could push the limit higher before the listener broke.
hope this helps
Nik |
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| bigdavem |
| Posted: Tue Nov 05, 2002 8:25 pm Post subject: |
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Acolyte
Joined: 16 Sep 2001
Posts: 69
Location: Sydney, Australia
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We did some testing on HP-UX using about 500 client connections 3 years ago. It had no problem handling the connections, but when we pulled the network cable out of the machine housing all of the clients (to simulate WAN failure) the HP-UX box when into a tailspin and never recovered. We left it for 24 hours at one stage with no luck. This happened a number of times.
We had Hursely investigate it and they said it was a problem with HP-UX processes getting deadlocked and that we should run on NT instead. IBM have since told us that it has been fixed (not sure how if it was an HP-UX problem?) but we've never re-tested it. |
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| jlamond |
| Posted: Wed Nov 06, 2002 5:14 am Post subject: |
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Voyager
Joined: 28 May 2002
Posts: 94
Location: Paris
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Don't forget that the maximum number of channel (including client connection) is 100. In order to increase the number of active channel you need to modify the qm.ini file of each Queue Manager /var/mqm/qmgrs/<your queue manager>/qm.ini.
Regard,
JM
_________________
Jean-Marc |
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