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| performance problem |
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| Elad |
 Posted: Thu Sep 08, 2005 11:57 pm Post subject: performance problem |
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Newbie
Joined: 08 Sep 2005
Posts: 1
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Hi,
I have 2 Windows applications running on Windows 2000 HP Proliant servers which use MQ to communicate.
The MQ server resides in the destination computer, and the source computer is a client.
The source is a .NET application using the MQ.NET interface (amqnet...dll). The dest is a C++ app using the AMI interface.
There are 2 MQ queues: one for messages from A to B and the other for messages in the other direction.
They communicate using a 100mbps LAN.
Each message is about 6K. When I'm sending messages in a rate of over 4 messages per second, performance seems to fall dramatically. Every few messages, there's a message which is sent very slowly. Sometimes a few seconds pass until the MQQueue.Put returns.
This causes more and more messages to queue up (in an internal queue, not MQ related) in the sending app memory.
Any ideas?
Elad. |
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| hopsala |
| Posted: Fri Sep 09, 2005 2:02 am Post subject: |
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Guardian
Joined: 24 Sep 2004
Posts: 960
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Check out the following parameters in MQ literature:
1. BATCHSZ, BATCHINT (sender side)
2. MRRTY, MRTMR (receiver side)
3. NPMSPEED (both sides)
Also check on the receiver side error logs that nothing's amiss - possibly the queue depth on the other side fills up (if so, change MRRTY and MRTMR, as said)
| elad wrote: |
| There are 2 MQ queues: one for messages from A to B and the other for messages in the other direction. |
Just a remark, but one that you should take to heart - MQ queues are NOT "from to" queues, they are INPUT queues. Each queue is simply an input queue for an application, and remote queues are nothing but a reference to that input. You should look around this forum for something like "queue naming conventions" and read a bit... |
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