RFR: 8342818: Implement CPU Time Profiling for JFR

[Erik Gahlin]

On Sat, 21 Sep 2024 12:12:46 GMT, Johannes Bechberger <jbechberger at openjdk.org> wrote:

> The queue size is pre-computed to a large value that shouldn't lead to many dropped samples. I don't think that making the queue size settable is really useful. Please ignore, therefore, my mentioning of the queue size for throttling; the real throttling is by setting the interval. There is no other way that is also understandable by the user.

Recording files could be filled with CPU Time Sample events, flushing out important data, making the feature not usable for continuous profiling. We can't demand that users set a period every time they use JFR.

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PR Comment: https://git.openjdk.org/jdk/pull/20752#issuecomment-2365173899