[jdk8u-dev] RFR: 8228658: test GetTotalSafepointTime.java fails on fast Linux machines with Total safepoint time 0 ms

[SendaoYan]

On Sat, 14 Sep 2024 02:24:54 GMT, SendaoYan <syan at openjdk.org> wrote:

> Hi all,
>   We observerd the test `sun/management/HotspotRuntimeMBean/GetTotalSafepointTime.java` intermittent fails on jdk8u-dev. The failure phenomenon samt to [JDK-8228658](https://bugs.openjdk.org/browse/JDK-8228658). So I want to backport this PR from jdk11u-dev to jdk8u-dev.
> 
> Only the copyright year backported not clean, the copyright year modified by JDK-6719955 and JDK-6943119 in jdk8u-dev. Other parts are backport cleanly.
> 
> The change has been verified locally, make the test more robustness, test fix only, no risk.

The GHA report several failures, all the failures unreleated to this PR.

1. linux x64 jdk/tier1 3 CA tests fails, which has been recorded by [JDK-8334441](https://bugs.openjdk.org/browse/JDK-8334441) and fixing by https://github.com/openjdk/jdk8u-dev/pull/526, it's unreleated to this PR.
2. linux x86 jdk/tier1 3 CA tests fails, which has been recorded by [JDK-8334441](https://bugs.openjdk.org/browse/JDK-8334441) and fixing by https://github.com/openjdk/jdk8u-dev/pull/526, it's unreleated to this PR.
3. linux x64 jdk/tier1 3 CA tests fails, which has been recorded by [JDK-8334441](https://bugs.openjdk.org/browse/JDK-8334441) and fixing by https://github.com/openjdk/jdk8u-dev/pull/526, it's unreleated to this PR.
4. windows x64 jdk/tier1 3 CA tests fails, which has been recorded by [JDK-8334441](https://bugs.openjdk.org/browse/JDK-8334441) and fixing by https://github.com/openjdk/jdk8u-dev/pull/526, it's unreleated to this PR.
5. windows x86 jdk/tier1 3 CA tests fails, which has been recorded by [JDK-8334441](https://bugs.openjdk.org/browse/JDK-8334441) and fixing by https://github.com/openjdk/jdk8u-dev/pull/526, it's unreleated to this PR.
6. macos x64 jdk/tier1 3 CA tests fails, which has been recorded by [JDK-8334441](https://bugs.openjdk.org/browse/JDK-8334441) and fixing by https://github.com/openjdk/jdk8u-dev/pull/526, it's unreleated to this PR.
7. macos x64 hotspot/tier1 `compiler/unsafe/OpaqueAccesses.java` test fails, which has been recorded by [JDK-8337185](https://bugs.openjdk.org/browse/JDK-8337185), it's unreleated to this PR.

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PR Comment: https://git.openjdk.org/jdk8u-dev/pull/578#issuecomment-2350857827