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| Tibor |
 Posted: Fri Jun 03, 2005 4:28 am Post subject: How can I select the EG for sending retained publications? |
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Grand Master
Joined: 20 May 2001
Posts: 1033
Location: Hungary
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We have heavy pub-sub traffic on the broker (WMQI 2.1) with retained publications. But there are 3 ExecutionGroups and I am confused which EG will be serving the ReqUpdate subscriptions. It would be very important to know how I can set the 'Publication' EG for performance considerations.
Other question is: how can I catch these publishings? Subscription messages are logged (RegSub, ReqUpdate, DeregSub), but I can't query a publication log from the broker 
Thanks in advance,
Tibor |
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| jefflowrey |
| Posted: Fri Jun 03, 2005 4:32 am Post subject: |
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Grand Poobah
Joined: 16 Oct 2002
Posts: 19981
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The pub/sub engine in WBIMB is what is actually WBIEB. So the documentation for that may tell you more about tuning.
| Tibor wrote: |
| Other question is: how can I catch these publishings? Subscription messages are logged (RegSub, ReqUpdate, DeregSub), but I can't query a publication log from the broker icon_frown.gif |
I don't think the broker makes a log of published messages.
But it's very easy to do so yourself... just create a priviledged subscriber that can subscribe to Everything, and have it stick messages in a database.
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I am *not* the model of the modern major general. |
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| Tibor |
| Posted: Fri Jun 03, 2005 6:28 am Post subject: |
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Grand Master
Joined: 20 May 2001
Posts: 1033
Location: Hungary
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| jefflowrey wrote: |
| The pub/sub engine in WBIMB is what is actually WBIEB. So the documentation for that may tell you more about tuning. |
Jeff, I search through all the documantations and websites but I didn't found answer for my question. The command mqsilist says there is 3 Execution Group (DataFlowEngine process). But only one reads the SYSTEM.BROKER.CONTROL.QUEUE for subscriptions, namely 'default'. However when I get an error (syslog entry) this comes from an other Exection Group! 
| jefflowrey wrote: |
| But it's very easy to do so yourself... just create a priviledged subscriber that can subscribe to Everything, and have it stick messages in a database. |
I don't understand how can it work for retained publications.
Tibor |
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| jefflowrey |
| Posted: Fri Jun 03, 2005 6:32 am Post subject: |
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Grand Poobah
Joined: 16 Oct 2002
Posts: 19981
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A retained publication is just another publication.
If your database logging application subscribes to all publications, it will get the retained publications as well as the non-retained publications.
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| Tibor |
| Posted: Fri Jun 03, 2005 6:45 am Post subject: |
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Grand Master
Joined: 20 May 2001
Posts: 1033
Location: Hungary
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OK, I understand. In a simple way I can query the database with mqsibrowse.
I like to see the publication processing (<pscr> messages) and *who* sends its.
Tibor |
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| jefflowrey |
| Posted: Fri Jun 03, 2005 7:13 am Post subject: |
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Grand Poobah
Joined: 16 Oct 2002
Posts: 19981
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| Tibor wrote: |
OK, I understand. In a simple way I can query the database with mqsibrowse.
I like to see the publication processing (<pscr> messages) and *who* sends its.
Tibor |
I guess I don't know if we're agreeing. I'm talking about a completely standalone log, that Broker doesn't know about, except as just another message flow.
There are events that broker publishes. You may be able to get information from those.
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| Tibor |
| Posted: Fri Jun 03, 2005 2:15 pm Post subject: |
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Grand Master
Joined: 20 May 2001
Posts: 1033
Location: Hungary
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| jefflowrey wrote: |
| There are events that broker publishes. You may be able to get information from those. |
My original question was: what does it mean 'the broker' when many DataFlowEngine works - and how can a message broker administrator influence the original fuzzy behavior?
And yes, the 'statistics gathering' feature is very fine but this is *only* information.
Tibor
PS: sorry when my post seems confused after zero hour (midnight)  |
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