8351359: OperatingSystemMXBean: values from getCpuLoad and getProcessCpuLoad are stale after 24.8 days (Windows)

[antonvoznia]

Hi,

It's a clean backport of JDK-8351359.
Changes are related to Windows only.

Testing:

• manual testing code that calls getProcessCpuLoad() on windows server 2025, intel cpu
• OpenJDK GHA Sanity Checks

---

Progress

• Change must not contain extraneous whitespace
• JDK-8351359 needs maintainer approval
• Commit message must refer to an issue

Issue

• JDK-8351359: OperatingSystemMXBean: values from getCpuLoad and getProcessCpuLoad are stale after 24.8 days (Windows) (Bug - P4 - Approved)

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.org/jdk17u-dev.git pull/3983/head:pull/3983
$ git checkout pull/3983

Update a local copy of the PR:
$ git checkout pull/3983
$ git pull https://git.openjdk.org/jdk17u-dev.git pull/3983/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 3983

View PR using the GUI difftool:
$ git pr show -t 3983

Using diff file

Download this PR as a diff file:
https://git.openjdk.org/jdk17u-dev/pull/3983.diff

Using Webrev

Link to Webrev Comment

[bridgekeeper]

Hi @antonvoznia, welcome to this OpenJDK project and thanks for contributing!

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[openjdk]

@antonvoznia This change now passes all automated pre-integration checks.

ℹ️ This project also has non-automated pre-integration requirements. Please see the file CONTRIBUTING.md for details.

After integration, the commit message for the final commit will be:

8351359: OperatingSystemMXBean: values from getCpuLoad and getProcessCpuLoad are stale after 24.8 days (Windows)

You can use pull request commands such as /summary, /contributor and /issue to adjust it as needed.

At the time when this comment was updated there had been 349 new commits pushed to the master branch:

• 07466f6: 8377509: Add licenses for gcc 14.2.0
• bce66e3: 8326705: Test CertMsgCheck.java fails to find alert certificate_required
• 553b9f8: 8311644: Server should not send bad_certificate alert when the client does not send any certificates
• ... and 346 more: https://git.openjdk.org/jdk17u-dev/compare/8bdebb058ae152a1666a0268bd5e4ce6b862b9fd...master

As there are no conflicts, your changes will automatically be rebased on top of these commits when integrating. If you prefer to avoid this automatic rebasing, please check the documentation for the /integrate command for further details.

As you do not have Committer status in this project an existing Committer must agree to sponsor your change.

➡️ To flag this PR as ready for integration with the above commit message, type /integrate in a new comment. (Afterwards, your sponsor types /sponsor in a new comment to perform the integration).

[openjdk]

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

[antonvoznia]

/covered

[bridgekeeper]

Thank you! Please allow for a few business days to verify that your employer has signed the OCA. Also, please note that pull requests that are pending an OCA check will not usually be evaluated, so your patience is appreciated!

[bridgekeeper]

@antonvoznia This pull request has been inactive for more than 4 weeks and will be automatically closed if another 4 weeks passes without any activity. To avoid this, simply issue a /touch or /keepalive command to the pull request. Feel free to ask for assistance if you need help with progressing this pull request towards integration!

[openjdk]

⚠️ @antonvoznia 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.

[mlbridge]

Webrevs

• 00: Full (7640e227)

[bridgekeeper]

@antonvoznia This pull request has been inactive for more than 8 weeks and will now be automatically closed. If you would like to continue working on this pull request in the future, feel free to reopen it! This can be done using the /open pull request command.

[antonvoznia]

/open

[openjdk]

@antonvoznia This pull request is now open

[bridgekeeper]

@antonvoznia This pull request has been inactive for more than 4 weeks and will be automatically closed if another 4 weeks passes without any activity. To avoid this, simply issue a /touch or /keepalive command to the pull request. Feel free to ask for assistance if you need help with progressing this pull request towards integration!

[pontusp]

@antonvoznia what happen to this pull request? Looking forward to getting this into JDK 17 // Regards pontusp (reporter of JDK-8351359)

[antonvoznia]

/touch

[openjdk]

@antonvoznia The pull request is being re-evaluated and the inactivity timeout has been reset.

[antonvoznia]

@pontusp ,
Hi, I’m waiting for maintainer approval.
The same fix was merged into JDK 21, so we’re ready to proceed with this one.

[jerboaa]

@antonvoznia You need to re-apply for approval. This is currently not showing up in the list of bugs to approve (missing approval label).

[openjdk]

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

[antonvoznia]

/approval It's a clean backport to JDK17. The hanges are related to Windows only.

[openjdk]

@antonvoznia usage: /approval [<id>] (request|cancel) [<text>]

[antonvoznia]

/approval request It's a clean backport to JDK17. The hanges are related to Windows only.

[openjdk]

@antonvoznia
8351359: The approval request has been created successfully.

[antonvoznia]

@jerboaa , thank you, I've updated the label :)

[GoeLin]

HI @antonvoznia
you need to give a meaningful comment with your approval request, see also https://wiki.openjdk.org/spaces/JDKUpdates/pages/42598906/How+to+contribute+or+backport+a+fix
especially section 6.

You can issue the /approval command again with a approriate comment.

[antonvoznia]

/approval request Fix request jdk17u-dev
Clean backport. Many machines are running over 24.8, they can encounter the issue.
I did manual testing of getProcessCpuLoad() call on windows server 2025, intel cpu, and GHA Sanity Checks, everything passed.
The risk is low.

[openjdk]

@antonvoznia
8351359: The approval request has been updated successfully.

[antonvoznia]

@GoeLin , done.
Thanks!

[antonvoznia]

Probably something wasn't stable in the test pipeline.
"Pre-submit tests - linux-x64 / build - Build / testFailing after 21m — 1/1 failed"

Because, before submitting this PR, I ran the tests in my fork, it was passed:
https://github.com/antonvoznia/jdk17u-dev/actions/runs/17910485691

[openjdk]

⚠️ @antonvoznia the full name on your profile does not match the author name in this pull requests' HEAD commit. If this pull request gets integrated then the author name from this pull requests' HEAD commit will be used for the resulting commit. If you wish to push a new commit with a different author name, then please run the following commands in a local repository of your personal fork:

$ git checkout JDK-8351359
$ git commit --author='Preferred Full Name <you@example.com>' --allow-empty -m 'Update full name'
$ git push