On Thu, 5 Oct 2023 03:00:36 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 one additional > commit since the last revision: > > add comment and change if defined to ifdef test/jdk/sun/tools/jcmd/TestGcCounters.java line 17: > 15: public class TestGcCounters { > 16: > 17: private static final String[] VM_ARGS = new String[] { > "-XX:+UsePerfData" }; The `VM_ARGS` is passed to the jcmd subprocess via `JcmdBase.jcmd()`. This is probably not what we want, we want to pass `-XX:+UsePerfData` to the main process that runs `TestGcCounters.main()`. We probably need this on line 13: @run main/othervm -XX:+UsePerfData TestGcCounters ------------- PR Review Comment: https://git.openjdk.org/jdk/pull/15082#discussion_r1355941023