8174734: Safepoint sync time did not increase

[sendaoYan]

Hi all,

This backport PR will fix the test bug which cause sun/management/HotspotRuntimeMBean/GetSafepointSyncTime.java intermittent fails. Before this backport , test fails about 1/50 probability. After this backport PR, test run all passed 10k times.

This test was problemlist by JDK-8174855, this do not backported to jdk8u. So this backport do not need change the jdk/test/Problemlist.txt. And the copyright year different. These two parts cause this backport PR uncleanly. Other parts are all cleanly.

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Progress

• Change must be properly reviewed (1 review required, with at least 1 Reviewer)
• Change must not contain extraneous whitespace
• Commit message must refer to an issue
• JDK-8174734 needs maintainer approval

Issue

• JDK-8174734: Safepoint sync time did not increase (Bug - P3 - Requested)

Reviewers

• Paul Hohensee (@phohensee - Reviewer)

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.org/jdk8u-dev.git pull/734/head:pull/734
$ git checkout pull/734

Update a local copy of the PR:
$ git checkout pull/734
$ git pull https://git.openjdk.org/jdk8u-dev.git pull/734/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 734

View PR using the GUI difftool:
$ git pr show -t 734

Using diff file

Download this PR as a diff file:
https://git.openjdk.org/jdk8u-dev/pull/734.diff

Using Webrev

Link to Webrev Comment

[bridgekeeper]

👋 Welcome back syan! A progress list of the required criteria for merging this PR into master will be added to the body of your pull request. There are additional pull request commands available for use with this pull request.

[openjdk]

❗ This change is not yet ready to be integrated.
See the Progress checklist in the description for automated requirements.

[openjdk]

This backport pull request has now been updated with issue from the original commit.

[mlbridge]

Webrevs

• 00: Full (54fe9f16)

[sendaoYan]

GHA report linux-x64 and linux-x86 runtime/containers/docker/TestCPUAwareness.java fails, which is being exclude by #727, it's unrelated to this backport PR.

[openjdk]

⚠️ @sendaoYan This change is now ready for you to apply for maintainer approval. This can be done directly in each associated issue or by using the /approval command.

[sendaoYan]

Thanks for the reviews @phohensee

/approval request Backport to fix the test bug which cause sun/management/HotspotRuntimeMBean/GetSafepointSyncTime.java intermittent fails. Before this backport PR, test fails about 1/50 probability. After this backport PR, test run all passed 10k times. Change has been verified locally on linux-x64, test-fix only, no risk.

[openjdk]

@sendaoYan
8174734: The approval request has been created successfully.