RFR: 8252104: parallel heap inspection for ShenandoahHeap
Lin Zang
lzang at openjdk.java.net
Wed Sep 9 03:02:57 UTC 2020
On Tue, 8 Sep 2020 06:48:03 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:
>> - enable parallel heap inspecton for ShenandoahHeap
>> - preliminary evaluation:
>> Time of jmap histo on (8GB heap with 4GB objects)
>> * before: 5.186s
>> * after : 1.698s
>
> Thanks, this looks interesting.
>
> I need more time to digest this. It feels like we can merge together the parallel (new) and serial (old) heap iteration
> code for better maintainability. I could try to do so later.
Thanks @shipilev, This is shenandoah support based on parallel heap inspection enabling in serviceability (tracked with
https://bugs.openjdk.java.net/browse/JDK-8215624). hope it is helpful for your review.
-------------
PR: https://git.openjdk.java.net/jdk/pull/67
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