On Wed, 15 Oct 2025 14:18:41 GMT, SendaoYan <[email protected]> wrote:
> Hi all, > > The sub-test failcount in > jdk/internal/platform/docker/TestDockerMemoryMetrics.java requires swap > memory enable on the test host. But the swap memory check introduced by > JDK-8264524 do not work correctly, because it's missing jvm option > '-XX:+AlwaysPreTouch', shows as below. This PR add jvm option > '-XX:+AlwaysPreTouch' to make the swap memory check work correctly, and use > jtreg.SkippedException instead of print waring when this test can not execute. > > Change has been verified locally on linux-x64. Test fix only, no risk. > > >> free -h > total used free shared buff/cache available > Mem: 751Gi 513Gi 229Gi 5.0Mi 8.4Gi 234Gi > Swap: 0B 0B 0B > > > Without jvm option -XX:+AlwaysPreTouch, the 'java -Xms128m -Xmx128m -version' > can start successfully: > >> docker run --rm --memory=128m >> jdk-internal:test-jdk-internal-platform-docker-TestDockerMemoryMetrics-metrics-memory >> /jdk/bin/java -Xms128m -Xmx128m -version > openjdk version "26" 2026-03-17 > OpenJDK Runtime Environment HJDK-0 (build 26+-42b2999c) > OpenJDK 64-Bit Server VM HJDK-0 (build 26+-42b2999c, mixed mode, sharing) > > > With jvm option -XX:+AlwaysPreTouch, the 'java -XX:+AlwaysPreTouch -Xms128m > -Xmx128m -version' can not start and killed by docker(return code is 137): > >> docker run --rm --memory=128m >> jdk-internal:test-jdk-internal-platform-docker-TestDockerMemoryMetrics-metrics-memory >> /jdk/bin/java -XX:+AlwaysPreTouch -Xms128m -Xmx128m -version ; echo $? > 137 This pull request has now been integrated. Changeset: 7e068cc8 Author: SendaoYan <[email protected]> URL: https://git.openjdk.org/jdk/commit/7e068cc8d572e61cf2f4203f66fe0175a541209d Stats: 14 lines in 2 files changed: 6 ins; 2 del; 6 mod 8343340: Swapping checking do not work for MetricsMemoryTester failcount Reviewed-by: sgehwolf ------------- PR: https://git.openjdk.org/jdk/pull/27823
