I think in our case we have a deadlock of not cleaning garbage in large enough chunks; being stuck in high cpu is as good as being dead
Jack On May 16, 2011 4:41 PM, "Andrew Purtell" <[email protected]> wrote: > This is interesting because our "conventional wisdom" is those settings should increase the chance of stop-the-world GC and should be avoided. > > - Andy > (who always gets nervous when we start talking about GC black magic) > >> From: Jack Levin <[email protected]> >> Subject: Re: GC and High CPU >> To: [email protected] >> Date: Monday, May 16, 2011, 5:06 PM >> >> Those are the lines I added: >> >> -XX:+CMSIncrementalMode \ <-------- >> -XX:+CMSIncrementalPacing \ <------- >> -XX:-TraceClassUnloading <------ >> >> -Jack >> (used CMS before) >> >> On Mon, May 16, 2011 at 4:19 PM, Stack <[email protected]> >> wrote: >> > So, the change is that you started using CMS? You >> > were using the default GC previous? >> > >> > ParNew is much bigger now. >
