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MQSeries.net Forum Index » IBM MQ Installation/Configuration Support » Solaris: Effect of lowering shminfo_shmmax kernel

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KeeferG
PostPosted: Thu Nov 04, 2004 9:11 am    Post subject: Solaris: Effect of lowering shminfo_shmmax kernel Reply with quote

Master

Joined: 15 Oct 2004
Posts: 215
Location: Basingstoke, UK
Hi,

We are running MQ 5.3.5 on Solaris 8 on a machine that has 1 GB of RAM. I was hoping to confirm that having shminfo_shmmax at 4294967295 would be ok or does it need to be lowered. What sort of impact would lowering it have. What effect would not lowering it have.

Any info appreciated.

Thanks
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Keith Guttridge
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jlamond
PostPosted: Fri Nov 05, 2004 2:18 am    Post subject: Reply with quote

Voyager

Joined: 28 May 2002
Posts: 94
Location: Paris
Max message size would be affected if reduced. Do you realy plan to send 4 gb messages....
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Jean-Marc
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KeeferG
PostPosted: Fri Nov 05, 2004 2:50 am    Post subject: Reply with quote

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Joined: 15 Oct 2004
Posts: 215
Location: Basingstoke, UK
Why would this affect the maximum message size. That is set in MQ and has a limit of 100MB although defaults to 4MB. This, I believe, sets the maximum amount of memory available to the application. I think that actually leaving it as it is will have no effect as the system wouldnt have that memory to use but was hoping to confirm it.
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Keith Guttridge
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