JEP 189: Shenandoah: An Ultra-Low-Pause-Time Garbage Collector

[Christine Flood]

I stopped working on GC after the G1 paper was published. 
Can you elaborate on the issues you have with G1 on PowerPC machines?

Our algorithm should work if you have a dependable CAS instruction.

I will ask about access to a PowerPC machine.

Christine

----- Original Message -----
> From: "Volker Simonis" <volker.simonis at gmail.com>
> To: "Roman Kennke" <rkennke at redhat.com>, chf at redhat.com
> Cc: "Hotspot-Gc-Dev" <hotspot-gc-dev at openjdk.java.net>
> Sent: Friday, January 17, 2014 4:09:40 PM
> Subject: Re: JEP 189: Shenandoah: An Ultra-Low-Pause-Time Garbage Collector
> 
> Hi Roman, Christine,
> 
> I'm really looking forward to hear your talk about Shenandoah on FOSDEM.
> 
> But now that you already asked for questions:
> 
> Will you design the new collector with weak memory model architectures
> in mind. I know that it is hard if you don't have the corresponding
> hardware but I think RedHat should at least have access to some decent
> PowerPC machines and I would strongly advise you to test there
> thoroughly from the very beginning. We had (and still have) a lot of
> problems with G1 on these architectures.
> 
> Regards,
> Volker
> 
> On Fri, Jan 17, 2014 at 8:28 PM, Roman Kennke <rkennke at redhat.com> wrote:
> > Hi there,
> >
> > Sorry being so silent... we are very happy that the Shenandoah JEP has
> > finally been posted and would welcome any comments, questions,
> > discussion from the community.
> >
> > Cheers,
> > Roman
> >
> > Am Mittwoch, den 15.01.2014, 11:49 -0800 schrieb
> > mark.reinhold at oracle.com:
> >> Posted: http://openjdk.java.net/jeps/189
> >>
> >> - Mark
> >
> >
>