RFR: 8252105: parallel heap inspection for ZCollectedHeap
Lin Zang
lzang at openjdk.java.net
Thu Sep 10 09:59:56 UTC 2020
On Thu, 10 Sep 2020 09:33:28 GMT, Per Lidén <pliden at openjdk.org> wrote:
>> - enable parallel heap inspection for ZCollectedHeap
>> - preliminary evaluation:
>> Time of jmap histo on 8GB heap with ~5GB objects
>> * before: 7.103s
>> * after : 2.734s (with 4 parallel threads)
>
> Just looked at this briefly. My initial comment is that we need to avoid all the code duplicated from ZHeapIterator and
> isolate all this a bit better. Perhaps folding everything into one iterator, that can be used by both object_iterate()
> and parallel_object_iterator(). I'll take a closer look, and perhaps try some alternatives, when I get a chance.
Hi @pliden,
Thanks for your comments, I will try to merge ZHeapIterator and ZHeapParIterator and update the pr then.
-Lin
-------------
PR: https://git.openjdk.java.net/jdk/pull/103
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