RFR: 8292266: Add JFR event for total Reference processing time [v6]
Albert Mingkun Yang
ayang at openjdk.org
Tue Nov 22 12:29:23 UTC 2022
On Tue, 22 Nov 2022 07:21:39 GMT, Sangheon Kim <sangheki at openjdk.org> wrote:
>> Hi all,
>>
>> Can I have reviews for this change that adds a new JFR event for total Reference Processing time?
>>
>> The goal is to generate a new JFR event if there is already measured time. This CR doesn't add new time measurement.
>>
>> Testing: hs-tier1 ~ 3
>>
>> Thanks,
>> Sangheon
>
> Sangheon Kim has updated the pull request incrementally with one additional commit since the last revision:
>
> Rename to report_gc_reference_processing_time(). Change test @requires to !=Epsilon.
I think the new event for ref-processing time should be roughly corresponding to its neighbor `<Event name="GCReferenceStatistics"` in `metadata.xml`, regardless of ref-processing being STW or not.
> When/if we add concurrent reference processing time tracking (which isn't trivial to do)
@sangheon 's latest revision does that for Shenandoah and Z.
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PR: https://git.openjdk.org/jdk/pull/11230
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