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| ctefehinoz |
 Posted: Mon May 21, 2007 4:14 pm Post subject: Z/OS - Highest Msg/Sec rate you've seen on the S.C.T.Q? |
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Apprentice
Joined: 27 Oct 2003
Posts: 29
Location: Australia
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All,
My shop will be going from an underutilised QMGR to several QMGR's running millions of msgs a day.
We are considering clustering (in some form) but I am concerned about having to run outbound msg traffic via the SYSTEM.CLUSTER.TRANSMIT.QUEUE's. What's the highest sustained msg/sec on Z/OS anyone has seen in their shop/s?
Thanks
Ctefehinoz |
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| bruce2359 |
| Posted: Wed May 23, 2007 10:16 am Post subject: |
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| Quote: |
| What's the highest sustained msg/sec on Z/OS anyone has seen in their shop/s? |
Between two z boxes not resource constrained, the highest sustained msg/sec rate will be just slightly less than the maximum rate of the channel that the message flows on. Some channel settings can have an impact: batch size, batch interval, max msg length. If the messages are flowing on hypersocket channels (between LAPRs): no lag whatsoever.
If messages flow from a z box to a mid-range MQ instance, max msg/sec will be reduced to the (slow) speed of the destination platforms limited resources. |
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| ctefehinoz |
| Posted: Wed May 23, 2007 3:38 pm Post subject: Thanks |
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Apprentice
Joined: 27 Oct 2003
Posts: 29
Location: Australia
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Bruce,
Thanks for the relevant info. It will be Z/OS to Midrange, so I'd best get cracking with the midrange group to eliminate as many comms/platform bottlenecks as we can.
Thanks
Ctefehinoz |
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| bruce2359 |
| Posted: Thu May 24, 2007 7:04 am Post subject: |
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Guest
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| For optimum channel performance between z and midrange,, do NOT run an MQ client application - client channels. The client layer imposes far more network flows. Use qmgr to qmgr channels. |
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| ctefehinoz |
| Posted: Thu May 24, 2007 3:18 pm Post subject: Thanks again |
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Apprentice
Joined: 27 Oct 2003
Posts: 29
Location: Australia
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Bruce,
I'll file that morsel away for future reference for one or two other shops I'm involved in, however for this one it won't be a concern in the production implementation.
Thanks
Ctefehinoz |
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| cicsprog |
| Posted: Fri May 25, 2007 7:20 am Post subject: |
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Partisan
Joined: 27 Jan 2002
Posts: 347
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I have two high volume z/OS MQ applications (I'd bet other sites do much larger volumes). One is a MQ Client to z/OS MQM (my busiest). Since that's not your config, my second is more in-line with your config. However, this MQ Client config process over 1.5 million CICS trans in a day.
The second config is 3 z/OS MQM's in one site and 3 z/OS MQM's in another site. They are in a CLUSTER that contains 4 Windows MQM's.
I'm seeing message rates in Omegamon of around 110+ for ONE Cluster Sender in 1 minute intervals. And, about 90+ reply messages per minute going back to z/OS MQM's for ONE Cluster Recevier channel. Monday's and post holiday processing days are much busier.
Those z/OS MQM's aren't even breathing hard. |
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| cicsprog |
| Posted: Fri May 25, 2007 8:03 am Post subject: |
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Partisan
Joined: 27 Jan 2002
Posts: 347
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Gee...I was just a bit off on the MQ Client and CICS config after talking to the CICS team.  It's 29 million per day. That work is spread amonst 5 z/OS MQM's. Shows that MQ and CICS can really haul the mail.
If you haven't already, check the IBM MQ Supportpac site. There are numerious performance documents, like MP16, where IBM benchmarks MQ performance in various configs. Your mileage may vary.
That should give you something to do over Mermorial Day weekend  . |
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| ctefehinoz |
| Posted: Tue May 29, 2007 4:36 pm Post subject: Great stuff |
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Apprentice
Joined: 27 Oct 2003
Posts: 29
Location: Australia
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Cicsprog,
Thanks for the response. My shop will look like what you've described, eventually. We're aiming at around 6 MQM's fronting up to 30 or so CICSPlex'd regions. I'll check to see whther I've got the supportpac you've mentioned as I've been playing with numbers lately.
I think I'll breathe easier now after seeing the numbers you're getting.
Queens Birthday where I am  .
Regards
Ctefehinoz |
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