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| KAKEZ |
 Posted: Tue Jan 28, 2003 3:59 am Post subject: [Solved] non persist mess in memory and not written on disk |
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Centurion
Joined: 10 Oct 2002
Posts: 117
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Hi,
- i have heard that non persistent messages may be get directly in memory and not written on disk if the nonpersistent buffer is large enougth!
- is that right? and so where can we define the size of such buffer?
thanks
Jack |
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| pgorak |
| Posted: Tue Jan 28, 2003 5:34 am Post subject: |
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Disciple
Joined: 15 Jul 2002
Posts: 158
Location: Cracow, Poland
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On UNIX systems you adjust the size of the buffer in TuningParameters stanza of qm.ini file:
TuningParameters:
DefaultQBufferSize=1000000
The value is in bytes. Now, when you restart queue manager and define a local queue, the buffer will be allocated in accordance with the above settings. However, all local queues defined before DefaultQBufferSize was changed keep the previously defined size of the buffer (in your case default). Note that increasing the buffer does not necessarily means increasing performance - this depends on the number of messages you have on a particular queue most of the time.
Piotr |
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| KAKEZ |
| Posted: Tue Jan 28, 2003 6:43 am Post subject: TuningParameter stanza |
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Centurion
Joined: 10 Oct 2002
Posts: 117
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thanks Piotr for your answer, but i cannot find out where is described this
TuningParameters stanza - it is not defined for instance in the manal
system Administration !
- my box is a HP one and i need to know what are exactly all the attributes for all the stanza within qm.ini
- have idea?
Jack |
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| pgorak |
| Posted: Tue Jan 28, 2003 6:57 am Post subject: |
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Disciple
Joined: 15 Jul 2002
Posts: 158
Location: Cracow, Poland
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I found it in IBM's MP6E - MQSeries for HP-UX V5.2 - Performance highlights. If you need more information, you can also try this: MP6E - MQSeries for HP-UX V5.2 - Capacity planning guidance.
Piotr |
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| mrlinux |
| Posted: Tue Jan 28, 2003 7:29 am Post subject: |
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Grand Master
Joined: 14 Feb 2002
Posts: 1261
Location: Detroit,MI USA
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Tuning Parameters are never defined in the Manuals.
_________________
Jeff
IBM Certified Developer MQSeries
IBM Certified Specialist MQSeries
IBM Certified Solutions Expert MQSeries |
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| KAKEZ |
| Posted: Tue Jan 28, 2003 7:50 am Post subject: |
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Centurion
Joined: 10 Oct 2002
Posts: 117
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thanks to Piotr and Jeff for information
- now i understand that we can't find the TuningParameters stanza in the manuals
Jack |
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| technok |
| Posted: Tue Aug 10, 2004 6:43 pm Post subject: DefaultQBufferSize is available for WMQ v5.3 for AIX? |
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Novice
Joined: 14 Oct 2001
Posts: 17
Location: Hong Kong
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 DefaultQBufferSize is available for WMQ v5.3 for AIX?
_________________
Techno K
IBM Certified MQ/WMQI Specialist |
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