JEP proposed to target JDK 25: 518: JFR Cooperative Sampling

Mark Reinhold mark.reinhold at oracle.com
Mon May 26 15:06:30 UTC 2025


2025/5/19 9:14:33 -0400, mark.reinhold at oracle.com:
> The following JEP is proposed to target JDK 25:
> 
>   518: JFR Cooperative Sampling
>        https://openjdk.org/jeps/518
> 
>   Summary: Improve the stability of the JDK Flight Recorder (JFR) when
>   it asynchronously samples Java thread stacks.  Achieve this by walking
>   call stacks only at safepoints, while minimizing safepoint bias.
> 
> Feedback on this proposal from JDK Project Committers and Reviewers [1]
> is more than welcome, as are reasoned objections.  If no such objections
> are raised by 14:00 UTC on Monday, 26 May, or if they’re raised and
> then satisfactorily answered, then per the JEP 2.0 process proposal [2]
> I’ll target this JEP to JDK 25.

Hearing no objections, I’ve targeted this JEP to JDK 25.

- Mark


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