MQSeries.net :: View topic - WMQ/MQ

wilsonjohn24 · Posted: Tue Aug 11, 2009 11:18 pm Post subject:

Hi,

[Ctx: Broker Flow picking messages of a queue]

As part of a performance testing phase it was noted that all MQGET calls on the MQ Input node where failing with a WARNING of MQRC_TRUNCATED_MSG_FAILED, then a subsequent retry succeed.

In performance terms 1st Try was taking aroun 0.5 of second the second was taking 10 ms.

This part was repeatable accross all the calls it was not just a starting up or 1st time cost.

So to my questions:
1) Is this expected Bahaviour? I have observed something similar when J2EE MDB read messages of a queue.
2) How can I increase the size of the buffer as I cant see the setting in MQ Input node or is this system wide change?
3) What are the consequence of making changes suggested ( in question 2) ?

thanks

John