Tuning Java on LINUX Post: 302124351

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Top Forums UNIX for Advanced & Expert Users Tuning Java on LINUX Post 302124351 by cbkihong on Saturday 30th of June 2007 12:07:04 AM

06-30-2007

Registered User

Quote:

Originally Posted by crabbie_upk

4. what is the maximum you can successfully set it to?
=> Currently I could set upto -Xms2588m -Xmx2588m

That's quite good already. If you look at

http://java.sun.com/j2se/1.5.0/docs/...aris/java.html

Look at the documentation for these options, it says Linux platforms are limited to around 2GB, or less. Only SPARC may go beyond the figure.

I have read that some environments such as J2EE application server can achieve some advantage with multiple concurrent VMs, but whether you can use that really depends on your environment.

"Pro Java EE 5 Performance Management and Optimization" by Apress is a must-read for you, if you are managing a JavaEE environment.

cbkihong

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LEARN ABOUT MOJAVE

jconsole

jconsole(1)						      General Commands Manual						       jconsole(1)

NAME

       jconsole - J2SE Monitoring and Management Console

SYNOPSIS

       jconsole [ options ] [ pid | [ host:port ...  ] ]

PARAMETERS

       pid	      Process  ID of a Java VM that was started with -Dcom.sun.management.jmxremote option on the same machine. See JMX Monitoring
		      and Management for details at http://java.sun.com/j2se/1.5.0/docs/guide/management/agent.html.

       host:port      Host name on which the Java VM is running and the port number through which the Java VM's JMX Connector is  published.   See
		      JMX Monitoring and Management for details at http://java.sun.com/j2se/1.5.0/docs/guide/management/agent.html.

DESCRIPTION

       The  jconsole  command launches a graphical console tool that enables you to monitor and manage Java applications and virtual machines on a
       local or remote machine.

       NOTE- This tool is experimental and may not be available in future versions of the JDK.

OPTIONS

       -interval=n    Set the update interval to n seconds (default is 4 seconds)

       -notile	      Do not tile windows initially (for two or more connections)

       -version       Output version information abd exit.

       -help	      Output help message and exit.

SEE ALSO

       Monitoring and Management for Java Platform at http://java.sun.com/j2se/1.5.0/docs/guide/management/index.html

								    06 Feb 2004 						       jconsole(1)