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| Why message process slow from application? |
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| sandip_gaikwad |
 Posted: Fri Feb 01, 2013 4:36 am Post subject: |
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Voyager
Joined: 25 Jul 2011
Posts: 95
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| exerk wrote: |
| sandip_gaikwad wrote: |
| PeterPotkay wrote: |
Fractions of a second? You have the ability to issue and read the display command multiple times a second?
What is likely happening is the message is uncommitted for much longer than a fraction of a second. My bet is the app asks MQ to put or get the message under syncpoint, goes off and does some other work, perhaps updating a database, and then finally comes back to commit and move onto the next message. Odds are the actual MQ portions of this are taking milliseconds. |
I don't understand what you are trying to say? |
Meaning (and forgive me PeterPotkay if I'm stepping on your toes) that:
1. App gets message under syncpoint - time in WMQ = 1ms
2. App processes message content - time in WMQ = 0, time in App = 10ms
3. App updates database - time in WMQ = 0, time in App/DB = 3s
4. DB, App and WMQ commit changes - time in WMQ = 1ms, time in App = 1ms, time in DB = 1ms
So, total time in WMQ = 2ms but in App/Other Resource = over 3s. The symptom is messages moving off the queue slowly but the cause (in the above example) is a slow database. |
Thanks exerk for the help. |
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