RFR: JDK-8261034: improve jcmd GC.class_histogram to support parallel

Sat Feb 13 04:41:38 UTC 2021

On Sat, 13 Feb 2021 04:22:52 GMT, Lin Zang <lzang at openjdk.org> wrote:

> There is a limitation of parallel thread number so that it never exceed the total_workers defined in hotspot.
> so how about we just print how many threads worked on parallel heap insecption and then user get the clue to tune it?

How to we print the number of threads? It's not know to jmap.

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PR: https://git.openjdk.java.net/jdk/pull/2379