RFR: JDK-8306441: Two-stage Segmented Heap Dump [v10]

[Yi Yang]

On Sat, 17 Jun 2023 01:20:21 GMT, Alex Menkov <amenkov at openjdk.org> wrote:

>> Yi Yang has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   whitespace
>
> Could you please add info about what testing have been done

Hi @alexmenkov,

> Could you please add info about what testing have been done

Including serviceability tests and manual checks for both slowdebug and release version.  I'll do more test and sync test result in the main content of this PR.

I push a new commit to optimize the merge stage.  Now it performs heapdump file merge operation in attach listener thread when possible, which prevents us from occupying the VM Thread, which in turn affects the occurrence of GC and other VM operations.

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PR Comment: https://git.openjdk.org/jdk/pull/13667#issuecomment-1596609826