Join the OpenJDK HotSpot GC lists!
Hi all,
(alright, yes, I really needed to get back to blogging!)
We recently wanted to get feedback on a couple of changes that we are planning to the GC-related command line parameters of HotSpot. And we opened the discussion on the OpenJDK HotSpot GC mailing lists. So, I'd like to take this opportunity to encourage you to join those lists, if you're interested in participating in such discussions. We maintain two lists:
hotspot-gc-use (for discussion on the use of our GCs):
http://mail.openjdk.java.net/mailman/listinfo/hotspot-gc-use
hotspot-gc-dev (for discussions on the code of our GCs):
http://mail.openjdk.java.net/mailman/listinfo/hotspot-gc-dev
(Note that the latter is a member of the former. So, you don't have to become a member of both.)
And, for what it is worth, the questions we have been asking are the following:
http://mail.openjdk.java.net/pipermail/hotspot-gc-dev/2008-April/000237.html
http://mail.openjdk.java.net/pipermail/hotspot-gc-dev/2008-May/000309.html
Posted at 11:53AM May 30, 2008 by tony in Sun | Comments[2]
Hi Tony,
I'm now on the list :)
- gc logging :
can we get absolute time in the log, or at least absolute start time to correlate with other logs ?
- age :
In my case, I didn't know the existence of XX:+NeverTenure and thought age > 15 was a trick to get that behavior, I wonder if others have used that config on purpose ...
whats the the "compressed oops" JVM ?
Posted by Brice Beard on May 30, 2008 at 02:48 PM EST #
Hey Brice,
Bonsoir! Can we maybe have this conversation on the list instead of the blog? :-)
FWIW,
Re: absolute start time: try -XX:+PrintGCDateStamps on the latest JVMs (I can't remember which 6 update it went in).
Re: compressed oops: see http://blogs.sun.com/nike/entry/compressed_object_pointers_in_hotspot
Tony
Posted by Tony Printezis on May 30, 2008 at 03:32 PM EST #