G1 is bad for me
Y. Srinivas Ramakrishna
Y.S.Ramakrishna at Sun.COM
Thu Feb 18 09:37:56 PST 2010
Hi Andrei -- please use the latest hs17 JVM which you can get from JDK 7. There have been
many improvements (and bug fixes) since the 6u18/hs16 that you are using below.
Most importantly, please add -XX:-ReduceInitialCardMarks to work around a regression
introduced in 6u18/hs16, as described in the 6u18 release notes.
As re optimal settings (these may be quite different from shapes that helped with CMS
for example), i'll let others w/more (tuning and other) experience w/G1 comment.
On 02/18/10 08:56, Andrei Pozolotin wrote:
> Ramki, Jon, hi;
> I read everyting I could find on G1:
> etc, etc, etc,
> got myself excited - looks great on paper!
> and I followed Albert's advice, while trying to mimic my CMS settings:
> 1) pauses are 1000 milliseconds or more;
> 2) reproducible crashes after 3 minutes under load;
> logs attached;
> am I missing something obvious?
> like do I need to switch to older / specific JVM build?
> per Tony, this was already working fine for a neighbour of mine in 2008:
> Thank you;
> hotspot-gc-use mailing list
> hotspot-gc-use at openjdk.java.net
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