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MQSeries.net Forum Index » General IBM MQ Support » MQ filesystem / log question for stress testing

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goodwinm
PostPosted: Mon Jul 30, 2007 5:00 am    Post subject: MQ filesystem / log question for stress testing Reply with quote

Newbie

Joined: 30 Jul 2007
Posts: 1
Location: Zurich

Hi,

I am still quite new to MQ, but have a developer who wants to do an application stress test, which will mean about 350 000 7KB messages onto one queue.

I know that MAXDEPTH can go up to 999 999 999, so I dont have a problem there, but the messages are persistent, and I currently have the following logging set up:

LogPrimaryFiles=3
LogSecondaryFiles=2
LogFilePages=1024
LogType=CIRCULAR
LogBufferPages=0
LogDefaultPath=/var/mqm/log


Is this possible

How much diskspace do I need in /var/mqm ?

Should I change my logging settings

Cheers

Matt
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Vitor
PostPosted: Mon Jul 30, 2007 5:24 am    Post subject: Reply with quote

Grand High Poobah

Joined: 11 Nov 2005
Posts: 26093
Location: Texas, USA

Depends how many of the messages are in the same unit of work.
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jefflowrey
PostPosted: Mon Jul 30, 2007 11:39 am    Post subject: Reply with quote

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Joined: 16 Oct 2002
Posts: 19981

You should change your logging settings, regardless.

Those are the defaults, and I can guarantee you will run into an issue with them eventually. So you might as well change them now, rather than later.
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faraway
PostPosted: Mon Aug 13, 2007 1:14 am    Post subject: Reply with quote

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Joined: 16 Jan 2007
Posts: 6

better you use the /opt/mqm/samp/bin/amqsblst to test if it o.k or not.
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