G1 Performance [Was: JEP 248: Make G1 the Default Garbage Collector]
erik.osterlund at lnu.se
Thu Jul 30 09:19:38 UTC 2015
> On 30 Jul 2015, at 11:02, Andrew Dinn <adinn at redhat.com> wrote:
> On 30/07/15 09:42, Erik Österlund wrote:
>> Sorry for interrupting the discussion, but some things need setting
>> straight about my current work.
> Thanks for the status update and apologies for misleading anyone as to
> what you have actually been up to (I only intended to comment on what
> was discussed in the earlier thread).
> . . .
>> All in all, my solution depends less on IPI than the current
>> solution. I don’t use IPI for serializing thread states, I don’t use
>> it for safepoints, I don’t use it for ADS. Yet that membar in the G1
>> write barrier is gone with good performance improvements on my
>> machine in some G1 stressing microbenchmarks.
> That's good news. Am I right to presume that the membar is also not
> needed with CMS+USeCondCardMark?
>> Details will probably follow at some point in the future in a
>> separate thread when the time is right.
> Looking forward to that :-)
Me too! :)
> Andrew Dinn
> Senior Principal Software Engineer
> Red Hat UK Ltd
> Registered in UK and Wales under Company Registration No. 3798903
> Directors: Michael Cunningham (USA), Matt Parson (USA), Charlie Peters
> (USA), Michael O'Neill (Ireland)
More information about the hotspot-dev