strange gc log
Charles K Pepperdine
kirk at kodewerk.com
Wed Mar 23 22:00:40 UTC 2011
I don't know who is responsible for documentation but I ran into this @ http://www.oracle.com/technetwork/java/javase/gc-tuning-6-140523.html.
"Survivor Space Sizing
If desired, the parameter SurvivorRatio can be used to tune the size of the survivor spaces, but this is often not as important for performance. <----
Sorry to disagree but I find proper survivor space sizing to be critical to good GC performance more than 1/2 of the GC problems I run into a due to premature promotion of object due to improperly sized survivor spaces. This leads to frequent full GCs.
Regards,
Kirk
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://mail.openjdk.org/pipermail/hotspot-gc-dev/attachments/20110323/3520a670/attachment.htm>
More information about the hotspot-gc-dev
mailing list