RFR: JDK-8321266: Add diagnostic RSS threshold [v2]

Tue Dec 5 17:45:36 UTC 2023

On Tue, 5 Dec 2023 09:29:39 GMT, Thomas Stuefe <stuefe at openjdk.org> wrote:

> This timeout should be a lot larger and possibly be configurable. Have not opened a JBS issue yet since I wanted feedback first from @jerboaa .

There was some discussion around making the cache timeout configurable at some point but wasn't done, because it was not clear it was needed. See https://bugs.openjdk.org/browse/JDK-8296125. If there are more consumers and periodic polls of `os::physical_memory()` then it becomes more compelling to make this tunable (I haven't really looked at the patch yet). At the time, using `-XX:-UseDynamicNumberOfCompilerThreads` was sufficient.

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PR Review Comment: https://git.openjdk.org/jdk/pull/16938#discussion_r1416058460