On a servlet container 256M may be a good size, especially tomcat. There's a memory leak in tomcat that means redeploying wars results in permgen space being eaten - if you do hot deploys of wars then a permgen of 256 or greater is a good idea.

Jon.

On 3 Apr 2009, at 17:17, Philippe Marschall wrote:


Ruben Reusser wrote:

I would suggest increasing the perm size -XX:MaxPermSize=256m or to
-XX:MaxPermSize=512m - Perm Size is not heap, -Xmx will not help there.

256m is huge, 512m is humongous. Eclipse with 20k+ classes easily fits
twice into a 256m Perm Gen.

Cheers
Philippe


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