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question asked: Jan 14 '14, 3:51 a.m.
question was seen: 6,206 times
last updated: Jan 14 '14, 9:54 a.m.

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WAS settings for AIX en RTC recommendations

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Chalumeau Christian (1●1●1) | asked Jan 14 '14, 3:51 a.m.
Hello,
In this article http://publib.boulder.ibm.com/infocenter/aix/v7r1/index.jsp?topic=/com.ibm.aix.prftungd/doc/prftungd/java_tuning_aix.htm,  there are  some recommendations for tuning the jvm for a WAS server on AIX.

Also, the following settings are recommended for your Java environment:

ulimit -d unlimited

ulimit -m unlimited

ulimit -n unlimited

ulimit -s unlimited

These settings are not the same as those written in the RTC Control Center.

AIX

  • Before you can install and run Jazz products on your IBM AIX® system, you must increase the limit of open files:
    1. Start smit.
    2. Go to Security & Users > Users > Change/Show Characteristics of a User.
    3. Enter the User ID under which the Jazz Team Server is running.
    4. Enter a value of 65536 in the Soft NOFILE descriptors and Hard NOFILE descriptors fields.
    5. Enter a value of 10000 in the Soft NPROC per user and Hard NPROC per user fields.
    6. Logout and log back in to the system.
    7. Before starting Tomcat or WebSphere Application Server, run ulimit -n to see if the configuration took effect. The output must be 65536.
    8. Before starting Tomcat or WebSphere Application Server, run ulimit -u to see if the configuration took effect. The output must be 10000.
Question 1 : What values should we get for a CLM solution running with a WAS server on AIX?
Question 2 : The AIX environment just allows this values for the ulimit :

ulimit -m unlimited impossible => max value for our AIX => 32768

ulimit -n unlimitedimpossible => max value for our AIX => 65535

ulimit -s unlimited impossible => max value for our AIX => 4194304
Was is the impact ?




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Rosa Naranjo (2.9k●1●17●23) | answered Jan 14 '14, 9:54 a.m.
FORUM MODERATOR / JAZZ DEVELOPER
Hello
I'm not sure what is unclear with the instructions listed here:  http://pic.dhe.ibm.com/infocenter/clmhelp/v4r0m5/topic/com.ibm.jazz.install.doc/topics/c_special_considerations_linux.html
I believe this is telling you what settings are needed for ulimit -n and ulimit -u. It doesn't appear to cover anything with -m or -s.
The other information we have on WAS deployment of CLM is in the deployment wiki:  https://jazz.net/wiki/bin/view/Deployment/ConfiguringAndTuningWAS and https://jazz.net/wiki/bin/view/Deployment/ConfiguringAndTuningTheJVM#AIX

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