On Wed, 1 Nov 2023 23:56:25 GMT, Jonathan Joo <j...@openjdk.org> wrote:
>> 8315149: Add hsperf counters for CPU time of internal GC threads > > Jonathan Joo has updated the pull request incrementally with two additional > commits since the last revision: > > - revert gitignore change > - Attempt to fix broken test > The existing sun.management:type=HotspotThreading MBean approach (discussed > [here](https://mail.openjdk.org/pipermail/core-libs-dev/2023-September/111397.html)) > could be another general way to track CPU. However, the discussion concludes > that it is an internal API, and discourages users from using it. > @kstefanj , it is a pity that the `sun.management:type=HotspotThreading` > MBean is not exported any more. If we move that or a similar functionality to > a new MBean under `com.sun.management` (as proposed in the [cited > discussion](https://mail.openjdk.org/pipermail/core-libs-dev/2023-September/111397.html)) > then we might reuse these new hsperf counters in the same way this is > already done by some other MBeans which already use hsperf counters as their > information source. I think logging or JFR functionality could also easily be > implemented on top of the new hsperf counters. I haven't looked at the details around this, but extracting some useful information from the internal bean and making it public sound reasonable to me. ------------- PR Comment: https://git.openjdk.org/jdk/pull/15082#issuecomment-1794693970
