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| 20 seconds to queue a record |
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| solar28 |
 Posted: Mon Nov 30, 2009 1:20 pm Post subject: 20 seconds to queue a record |
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Newbie
Joined: 30 Nov 2009
Posts: 1
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I tried searching for similar problems, no luck finding a similar issue.
We are running burst testing against an MQ network about to be deployed. After about 30,000 records (being queued then dequeued) it grinds to a halt. There are roughly 500-1500 records in the queue when it slows down. A stored proc is responsible for queueing the item, it logs queue time. Before the backlog, most records only take about 20-60 milliseconds to queue, then jumps to 20 seconds per record right around the 30k mark, repeatedly.
Config:
persistence: on
Log File Size: 40960
Prim/Sec Log Extents: 10/10
Log buffer pages: 4096
Put type: Async
Log files on secondary (not primary) drive
Max queue size: 50,000 (but we're not getting near that)
Access is shared. The code that dequeues the items (C# win service) does issue a commit after it pops the item from the queue.
Any ideas? |
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| Vitor |
| Posted: Mon Nov 30, 2009 2:16 pm Post subject: Re: 20 seconds to queue a record |
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Grand High Poobah
Joined: 11 Nov 2005
Posts: 26093
Location: Texas, USA
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| solar28 wrote: |
| A stored proc is responsible for queueing the item, it logs queue time. |
At what point does this issue a commit?
_________________
Honesty is the best policy.
Insanity is the best defence. |
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| PeterPotkay |
| Posted: Mon Nov 30, 2009 2:49 pm Post subject: Re: 20 seconds to queue a record |
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Poobah
Joined: 15 May 2001
Posts: 7722
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| solar28 wrote: |
| A stored proc is responsible for queueing the item, it logs queue time. |
Exactly where is the before and after timestamp code placed in relation to the application code? Is there anyting, anything at all, between the following three?
Grab Time Stamp Before
MQPUT
Grab Time Stamp After
_________________
Peter Potkay
Keep Calm and MQ On |
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