G1 now the default in JDK 9

[Martijn Verburg]

There's a bunch of tools which are.... not quite up to scratch in this
space.  The best thing really for a hackday is to have people run realistic
load tests against their application and get the GC log results for
analysis.  jClarity offers free licenses of Censum for OSS / Community
activities so we can make sure that people who want to test can send in
detailed results.

@Ben did you want to lead a hackday in London on this?  We can do the usual
thing of hosting it on GitHub and getting people to repeat.

Cheers,
Martijn

On 2 July 2015 at 23:51, Mani Sarkar <sadhak001 at gmail.com> wrote:

> Hi Ben, Dalibor,
>
> As you guys know what you are talking about - could you please lead us to
> some reliable set of steps (any blog posts from experienced and reliable
> sources?) to at least start taking baby steps towards learning more about
> GC behaviours and testing it the best we can with the knowledge, tools and
> environments we have.
>
> I know of one such tool that helps does it -
> https://github.com/jClarity/hawkshaw, although I might be offtrack with
> this suggestion.
>
> Any ideas, suggestions in this space ? It will help all, and we can all
> chip in towards testing of G1GC,
>
> Cheers,
> Mani
>
> On Thu, Jul 2, 2015 at 11:45 PM, Mani Sarkar <sadhak001 at gmail.com> wrote:
>
> > Hi Richard,
> >
> > A new one is very desirable, could you share with us when such stats are
> > available, also details of how the stats are gathered, and process is
> done.
> >
> > Cheers,
> > Mani
> >
> > On Thu, Jul 2, 2015 at 7:20 AM, Richard Kolb <rjdkolb at gmail.com> wrote:
> >
> >> Hi Mani,
> >>
> >> That's great news. It's a long time in coming.
> >>
> >> It would be nice to see an updated benchmark on collectors in Java,
> >> especially with all the improvements to G1 in Java 8 update 40 and Java
> 9.
> >>
> >> Here is an old one
> >> <
> http://blog.mgm-tp.com/2013/12/benchmarking-g1-and-other-java-7-garbage-collectors/
> >
> >> .
> >>
> >> regards,
> >> Richard.
> >>
> >>
> >> On 2 July 2015 at 04:45, Mani Sarkar <sadhak001 at gmail.com> wrote:
> >>
> >>> FYI - to all those who case about G1GC.
> >>>
> >>> Cheers,
> >>> Mani
> >>> ---------- Forwarded message ----------
> >>> From: Stefan Johansson <stefan.johansson at oracle.com>
> >>> Date: Wed, Jul 1, 2015 at 9:14 AM
> >>> Subject: G1 now the default in JDK 9
> >>> To: "jdk9-dev at openjdk.java.net" <jdk9-dev at openjdk.java.net>
> >>>
> >>>
> >>> Hi all,
> >>>
> >>> A short heads up. The change to make G1 the default garbage collector
> has
> >>> now made its way to jdk9/dev [1] and should soon be part of a JDK 9
> early
> >>> access build.
> >>>
> >>> Thanks,
> >>> Stefan
> >>>
> >>> [1] http://hg.openjdk.java.net/jdk9/dev/hotspot/rev/d472d1331479
> >>>
> >>>
> >>>
> >>>
> >>> --
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> >>
> >
> >
> > --
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> --
> @theNeomatrix369 <http://twitter.com/theNeomatrix369>*  |  **Blog
> <http://neomatrix369.wordpress.com>**  |  *LJC Associate & LJC Advocate
> (@adoptopenjdk & @adoptajsr programs)
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> *Don't chase success, rather aim for "Excellence", and success will come
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>