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

Martijn Verburg martijnverburg at gmail.com
Tue Aug 4 07:36:58 UTC 2015


Nothing except for the fact I'm an idiot and forgot it was already posted!

Cheers,
Martijn

On 3 August 2015 at 23:20, Jeremy Manson <jeremymanson at google.com> wrote:

> What's the matter with the JEP that Jungwoo sent?
>
> http://mail.openjdk.java.net/pipermail/hotspot-gc-dev/2015-July/014092.html
>
> Jeremy
>
> On Mon, Aug 3, 2015 at 2:06 PM, Martijn Verburg <martijnverburg at gmail.com>
> wrote:
>
>> We'd certainly like to see a JEP for this.  There are use cases where CMS
>> is the right collector and this proposed patch could (I'll stress could)
>> significantly improve its performance.
>>
>> Cheers,
>> Martijn
>>
>> On 3 August 2015 at 19:53, Jon Masamitsu <jon.masamitsu at oracle.com>
>> wrote:
>>
>>> Jungwoo,
>>>
>>> As you can see no one has stepped up to do your review.
>>> We’ve talked about it amongst the active GC committers.
>>> It’s a large change and would require a very significant
>>> commitment of anyone’s time.  As is obvious, our focus
>>> is on G1.  And right now we’re in the position of having to
>>> push tasks we’ve long planned for JDK 9 out into a JDK 9
>>> update.  No one I’ve talked with is willing to push off more
>>> of our G1 work to get this patch in.  And as maintainers
>>> of the HotSpot GC's due diligence is required of us before
>>> we can accept this change.
>>>
>>> Jon
>>>
>>> PS.  I saw that you said you had started another thread for this
>>> discussion (or maybe the discussion of the JEP) but I could not
>>> it.    Please feel free to repost this under the new subject.
>>>
>>> On 06/27/2015 05:48 PM, Jungwoo Ha wrote:
>>>
>>> Sorry for the long wait. So many things have cleaned up on JDK9.
>>> Here is the webrev against jdk9/hs-rt.
>>> http://cr.openjdk.java.net/~jwha/8086706/webrev.jdk9.00
>>>
>>> I am preparing for the JEP doc.
>>>
>>>
>>> On Thu, Jun 11, 2015 at 12:31 PM, Kim Barrett <kim.barrett at oracle.com>
>>> wrote:
>>>
>>>> On Jun 11, 2015, at 12:33 PM, 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.
>>>>
>>>> You’ll want to use jdk9/hs-rt rather than jdk9/hs-gc.
>>>>
>>>>
>>>>
>>>
>>>
>>> --
>>> 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/20150804/c2b03a50/attachment-0001.html>


More information about the hotspot-gc-dev mailing list