RFR: 8241678: Remove PerfData sampling via StatSampler [v4]

[Casper Norrbin]

On Wed, 28 May 2025 09:08:30 GMT, Kevin Walls <kevinw at openjdk.org> wrote:

> Hi, looks good.
> If we are removing things from jcmd PerfCounter.print output, that could feature in the release note that you have planned. Anybody expecting these counters using jcmd PerfCounter.print or other methods, may not know that they are related to StatSampler and would not realise from the title that this is a relevant change.

Thank you. I will add that to the release note, along with text on how to calculate it instead using offsets (similar to what I did with the jstat counter)

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PR Comment: https://git.openjdk.org/jdk/pull/24872#issuecomment-2915907228