MQSeries.net :: View topic - MQ Open/Access Q and Close Q performance

MQSeries.net

Tech Exchange

Education

Certifications

Library

Info Center

SupportPacs

FAQÂ Â

Usergroups

RSS Feed - WebSphere MQ Support

RSS Feed - Message Broker Support

MQSeries.net Forum Index » IBM MQ Java / JMS » MQ Open/Access Q and Close Q performance

MQ Open/Access Q and Close Q performance

« View previous topic :: View next topic »

Author

Message

gifs71

Posted: Wed Aug 18, 2004 10:56 am Post subject: MQ Open/Access Q and Close Q performance

Novice

Joined: 05 Aug 2004
Posts: 13

Hi,

In my Java program, I get a message from a queue and then process it and repeat this as long as there are messages in the queue. The program would run 24/7 and would shutdown only in case of certains error conditions while processing. Now my question is the sequence of operations when I do this:

Code:

Scenario 1:
Connect to Q Mgr at startup
Repeat the following steps for each GET:
Access/Open a Q
GET a msg
Close the Q
Disconnect from the Q Mgr at shutdown

Scenario 2:
Connect to Q Mgr at startup
Access/Open a Q
Repeat the following steps for each GET:
GET a msg
At shutdown:
Close the Q
Disconnect from the Q Mgr

Now in terms of performance, it would seem that the "Scenario 2" is better because you only incur the cost of Open/Accessing and Closing the Queue once and not for every GET as in the case of "Scenario 1". But when I performed the tests I didn't see much of a performance difference between the two scenarios. So was wondering what Scenario should I implement? Is there anything that would weigh in favor of one Scenario over the other?

Thanks.

Rahul.

vennela

Posted: Wed Aug 18, 2004 11:05 am Post subject:

Jedi Knight

Joined: 11 Aug 2002
Posts: 4055
Location: Hyderabad, India

It also helps if you can tell what OPEN options you are specifying when you open the queue.
Scenario 2 is better if you open the queue in shared mode and want to run/ be able to run multiple copies of it.

leongor

Posted: Sun Aug 22, 2004 3:57 am Post subject:

Master

Joined: 13 May 2002
Posts: 264
Location: Israel

How do you measure it ? You need to run hundreds of messages to see a real difference.
_________________
Regards.
Leonid.

IBM Certified MQSeries Specialist.

Display posts from previous:

Page 1 of 1

MQSeries.net Forum Index » IBM MQ Java / JMS » MQ Open/Access Q and Close Q performance

Jump to:

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum

Protected by Anti-Spam ACP