On Sat, 17 Oct 2020 13:03:23 GMT, Markus Grönlund <mgron...@openjdk.org> wrote:
>> Greetings, >> >> JDK-8243962 has been a large effort to chase down intermittent timeouts for >> certain JVMTI tests when run on Windows >> debug builds in combination with JFR. The background is long, included in >> JDK-8243962. >> In short, the combination of some JVMTI thread suspension tests when run >> together with JFR on saturated Windows 2016 >> debug builds can intermittently time out. >> There have been two major changes made to JFR derived from JDK-8243962 >> (linked therein) in an attempt to reduce the >> poor scalability observed. >> Unfortunately, the efforts have not fully resolved the situation entirely as >> there have still been intermittent >> sightings for the following tests: >> vmTestbase/nsk/jvmti/scenarios/sampling/SP04/sp04t002/TestDescription.java >> vmTestbase/nsk/jvmti/scenarios/sampling/SP04/sp04t001/TestDescription.java >> vmTestbase/nsk/jvmti/scenarios/sampling/SP03/sp03t001/TestDescription.java >> vmTestbase/nsk/jvmti/scenarios/sampling/SP03/sp03t002/TestDescription.java >> >> This change will add a requires expression to these tests to exclude the >> combination of running them with JFR on >> Windows debug builds. >> Thanks >> Markus > > Markus Grönlund has updated the pull request with a new target base due to a > merge or a rebase. The incremental webrev > excludes the unrelated changes brought in by the merge/rebase. The pull > request contains three additional commits since > the last revision: > - deMorgan > - Merge branch 'master' into 8243962 > - 8243962: Various JVM TI tests time out using JFR on Windows Looks good. ------------- Marked as reviewed by cjplummer (Reviewer). PR: https://git.openjdk.java.net/jdk/pull/712
