HI There,

 

Just a quick question regarding the JConsole tool we use to monitor Tomcat5 
instances - 2 to be precise.

 

We've noticed that within the Memory display window the breakdown of Heap usage 
shows three areas and their utilisation.  The descriptions of each space 
differs between the servers, even though essentially they are configured 
identically.

 

They are both running Tomcat 5.5.15 on a Windows 2003 Server and differ 
slightly with their JVM (one is running the server JVM, the other is running 
the client JVM).

 

Server 1 - SUN JRE 1.5.0_06-b05 - shows "Eden", "Survivor" and "Tenured" space 
names

Server 2 - SUN JRE 1.5.0_06-b05 - shows "PS Survivor", "PS Eden" and "PS Old 
Gen" space names.

 

Can anybody explain this behaviour to me?

 

Cheers,

Darren





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