RFR: 8315149: Add hsperf counters for CPU time of internal GC threads [v33]

[David Holmes]

On Thu, 26 Oct 2023 21:01:53 GMT, Jonathan Joo <jjoo at openjdk.org> wrote:

>> 8315149: Add hsperf counters for CPU time of internal GC threads
>
> Jonathan Joo has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Remove StringDedup from GC thread list

> `os::elapsedVTime()` could silently fall back from CPU time to wall time, according to os_linux.cpp

The only allowed failure modes for `getrusage` are:

 EFAULT usage points outside the accessible address space.
 EINVAL who is invalid.

neither of which are going to occur in practice

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PR Comment: https://git.openjdk.org/jdk/pull/15082#issuecomment-1782275672