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MQSeries.net Forum Index » General IBM MQ Support » What is LogWriteIntegrity=TrupleWrite? Performance impact?

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simon.starkie
PostPosted: Thu Aug 22, 2002 3:10 pm    Post subject: What is LogWriteIntegrity=TrupleWrite? Performance impact? Reply with quote

Disciple

Joined: 24 Mar 2002
Posts: 180
I noticed the LogWriteIntegrity=TripleWrite recently started occurring in or mqs.ini and qm.ini. This may have always been there and I'm just now getting around to noticing it. Or perhaps it's new since we applied CSD04 to our MQ 5.2 base (we had CSD02 previously).
An example qm.ini is included below.
Is there a perfomance impact with this setting?
Can we change it and if so to what?
We use Persistent messaging for everything here and are seeing some disappointing scalability results when Persistent messaging is used. In fact, we see no performance improvement until we change over to using NonPersistent messages, and then we see the expected results (i.e. response time versus concurrency is nicely linear indicating good scalability).
Any help would be greatly appreciated.
Cheers!
Log: LogPrimaryFiles=29
LogSecondaryFiles=2
LogFilePages=16384
LogType=CIRCULAR
LogBufferPages=512
LogPath=/var/mqm/log/TACIB16/
LogWriteIntegrity=TripleWrite
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