WAS settings for AIX en RTC recommendations
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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.
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 ?
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:
- Start smit.
- Go to .
- Enter the User ID under which the Jazz Team Server is running.
- Enter a value of 65536 in the Soft NOFILE descriptors and Hard NOFILE descriptors fields.
- Enter a value of 10000 in the Soft NPROC per user and Hard NPROC per user fields.
- Logout and log back in to the system.
- Before starting Tomcat or WebSphere Application Server, run ulimit -n to see if the configuration took effect. The output must be 65536.
- Before starting Tomcat or WebSphere Application Server, run ulimit -u to see if the configuration took effect. The output must be 10000.
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 ?
One answer
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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
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