ASG
IBM
Zystems
Cressida
Icon
Netflexity
 
  MQSeries.net
Search  Search       Tech Exchange      Education      Certifications      Library      Info Center      SupportPacs      LinkedIn  Search  Search                                                                   FAQ  FAQ   Usergroups  Usergroups
 
Register  ::  Log in Log in to check your private messages
 
RSS Feed - WebSphere MQ Support RSS Feed - Message Broker Support

MQSeries.net Forum Index » General Discussion » Multiple amqzlsa0 processes on RHEL 3 & MQ 5.3 CSD10

Post new topic  Reply to topic
 Multiple amqzlsa0 processes on RHEL 3 & MQ 5.3 CSD10 « View previous topic :: View next topic » 
Author Message
TheDude
PostPosted: Wed Aug 17, 2005 7:59 pm    Post subject: Multiple amqzlsa0 processes on RHEL 3 & MQ 5.3 CSD10 Reply with quote

Apprentice

Joined: 21 Oct 2002
Posts: 31
I am testing a RHEL 3 linux server with MQ 5.3 & CSD10 applied. Using the AMQ_THREADMODEL_RESET=1 env variable when installing MQ. Everything seems fine. However, when I run a simple java request/reply program on the same server (no channel definitions) we get multiple amqzlsa0 processes being spawned that "hang around" for quite a long time. If we run the java program multiple tiimes the # of amqzlsa0 processes can get as high as 250.

My questions:
What is amqzlsa0?
Is this behavior normal?
Will these process affect the system when load to other applications on the system is applied?
Is this a problem with the whole NPTL/Linux threads thing in RHEL 3?

Please let me know.

TheDude.
Back to top
View user's profile Send private message
Nigelg
PostPosted: Thu Aug 18, 2005 12:18 am    Post subject: Reply with quote

Grand Master

Joined: 02 Aug 2004
Posts: 1046
amqzsla0 is the agent process that handles socket connections to the qmgr, when the app -> qmgr connection is set to isolated bindings.
It is used when the qm.ini Connection stanza contains the attribute DefaultBindType=ISOLATED.

This behaviour is not normal or desirable - it is a WMQ bug that setting the env var AMQ_THREADMODEL_RESET causes socket conections to be used instead of shared memory connections.

You should use LD_ASSUME_KERNEL=2.4.19 instead.
_________________
MQSeries.net helps those who help themselves..
Back to top
View user's profile Send private message
Display posts from previous:   
Post new topic  Reply to topic Page 1 of 1

MQSeries.net Forum Index » General Discussion » Multiple amqzlsa0 processes on RHEL 3 & MQ 5.3 CSD10
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
  
 


Theme by Dustin Baccetti
Powered by phpBB © 2001, 2002 phpBB Group

Copyright © MQSeries.net. All rights reserved.