RFC: JEP - ZGC: A Scalable Low-Latency Garbage Gollector

Simone Bordet simone.bordet at gmail.com
Mon May 7 09:11:45 UTC 2018


On Mon, Apr 30, 2018 at 7:45 AM, Per Liden <per.liden at oracle.com> wrote:
> Hi,
> We're looking at submitting the ZGC JEP to become Candidate. But first we'd
> like to solicit feedback.
> http://openjdk.java.net/jeps/8197831

FWIW, I have high hopes for this collector :)

Given the discussion thread with Per and Gil about the
similarities/differences with Azul's C4, I was wondering whether
making ZGC multi-generation has been considered and why it's been
decided to not make it multi-generation, since Azul went from single
to multi generation from Pauseless to C4.

Also, I remember using JRockit's deterministic collector with great
results, so I was wondering if there is (or willing to produce) a
comparison table between the two.

Finally, I'd like to know the plans with regard to JIT integration
with regards to C2 and Graal.
Integrate with both, or only one of them ?

Thanks !

Simone Bordet
Finally, no matter how good the architecture and design are,
to deliver bug-free software with optimal performance and reliability,
the implementation technique must be flawless.   Victoria Livschitz

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