RFR (XL): JDK-8086706 Parallel Full GC for CMS

Jungwoo Ha jwha at google.com
Thu Jun 11 18:10:49 UTC 2015


Volker,

Thanks for the offer. I can work on the JDK9 patch.
I'll post the patch soon.

--Jungwoo


On Thu, Jun 11, 2015 at 9:33 AM, Volker Simonis <volker.simonis at gmail.com>
wrote:

> Hi,
>
> if nobody has already started doing it, I'll try to forward port the
> patch to jdk9/hs-gc/hotspot.
>
> Once we have that, we can do the JEP.
>
> @Jungwoo: I can assist you with the JEP creation and the whole process
> (I've already done that for our PPC/AIX port).
>
> Thanks,
> Volker
>
>
> On Thu, Jun 11, 2015 at 6:05 PM, Jon Masamitsu <jon.masamitsu at oracle.com>
> wrote:
> > Jungwoo,
> >
> > For a feature enhancement for jdk9 you'll need a JEP
> >
> > http://openjdk.java.net/jeps/1
> >
> > This is the same process that we use internally at  Oracle.
> > Please explain in the JEP that this is a community provided
> > and supported feature.  Otherwise, the testing, support,
> > performance, etc. teams at Oracle will want to know how
> > this impacts them.  I've already been asked.
> >
> >
> > On 06/10/2015 03:11 PM, Jungwoo Ha wrote:
> >
> > Bug: https://bugs.openjdk.java.net/browse/JDK-8086706
> > Code: http://cr.openjdk.java.net/~jwha/8086706/webrev.00
> >
> > Here is our code for parallel full GC in CMS.
> > We've enabled this by default for a long time, so it won't cause any
> crash
> > easily.
> > We see spaces for improvements in scalability, but correctness-wise it
> > should be okay.
> > Though I had to do some manual edit to create the patch.
> >
> > Please take a look and let me know.
> > Jon, can you sponsor this change?
> >
> >
> > No.  I think that's premature and I also don't think
> > this integration should hinge just on me.  When
> > the integration is ready, ask for a sponsor on the
> > mailing lists.
> >
> > Jon
> >
> >
> > --
> > Jungwoo Ha
> >
> >
>



-- 
Jungwoo Ha | Java Platform Team | jwha at google.com
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.openjdk.java.net/pipermail/hotspot-gc-dev/attachments/20150611/bac9fee7/attachment.html>


More information about the hotspot-gc-dev mailing list