On Fri, 8 Sep 2023 10:21:23 GMT, Soumadipta Roy <d...@openjdk.org> wrote:
>> 8315770: serviceability/sa/TestJmapCoreMetaspace.java should run with >> -XX:-VerifyDependencies >> >> serviceability/sa/TestJmapCoreMetaspace.java runs in hotspot:tier2, and >> takes about 330 seconds out of 670 seconds of the entire run on x86_64 >> fastdebug. The tier2 completion usually waits on it. Profiling shows we are >> spending time during classloading, checking dependencies. Since we load lots >> of classes, we do it many times, and each time the cost grows linearly to >> the number of classes. Some other tests that target metaspace explicitly >> disable `VerifyDependencies` to avoid this. >> >> The commit includes adding "-XX:-VerifyDependencies" along with >> "-XX:+IgnoreUnrecognizedVMOptions" in TestJmapCore.java to make sure that >> release builds work with the test, as VerifyDependencies is a develop option >> and not available in release builds. The changes in the commit are resulting >> in considerable improvement for the test in fastdebug mode as can be seen >> below: >> >> * before: **130.41s user 14.11s system 118% cpu 2:01.85 total** >> * after: **27.52s user 13.64s system 213% cpu 19.249 total** > > Soumadipta Roy has updated the pull request incrementally with one additional > commit since the last revision: > > Changing the order of flags to maintain consistency. Marked as reviewed by kevinw (Committer). ------------- PR Review: https://git.openjdk.org/jdk/pull/15631#pullrequestreview-1617308322
