JVM Memory much bigger than it should...
843811Oct 6 2003 — edited Oct 8 2003Hello everyone!
I read lots of topics today about similar problem but never got a definitive answer.
We are using the following parameters
-Xms256m -Xmx256m -XX:NewSize=96M -XX:MaxNewSize=96M -XX:SurvivorRatio=8 -verbosegc
every time we start the JVM (running WL7.0 SP2) the process shows ~500MB memory allocation.
0. Running Config
OS: SunOS udevwl01 5.8 Generic_108528-23 sun4u sparc SUNW,Ultra-80
JAVA: Java HotSpot(TM) Client VM (build 1.3.1_09-b03, mixed mode)
1. The max heap is 256 and no Memory Leaks have been detected with profiling tools. Also no Out Of Memory Errors in the logs.
2. The process consistently allocates ~500MB after every reboot
3. Removing the GC settings doesn't change much the picture.
Is there a comprehensive description on what happens under the hood with the JVM as far as memory goes? I can't find anything good enough so far. Should I just start looking at the JVM's source code?
Cheers,
Antoan Nikolaev