GC parameters

[beneo]

1)
can we use them together??
-XXarallelGCThreads=20 -XX:+UseConcMarkSweepGC


or

-XXarallelGCThreads=20 -XX:+UseParallelGC


the -XXarallelGCThreads=20 just can work.

2)
we should use -XX:+UseParallelGC -XX:+UseParallelOldGC to enable
parallel collector and compaction, or just use -XX:+UseParallelOldGC

3)
i have 4 processors, the -XX:+UseConcMarkSweepGC will use the all of
them?

4)
i have 4 processors, the -XXarallelGCThreads=<N>, the N should 4 or
something?

Edited by: beneo on Aug 26, 2009 8:28 PM