8271840: Add simple Integer.toString microbenchmarks

[cl4es]

This adds Integer.toString microbenchmarks, roughly similar to the Long.toString microbenchmarks (toStringSmall should use an equivalent data set). This is useful for comparison purposes and completeness.

Also tuned existing benchmarks to harmonize setup, reduce runtime without significantly harming reliability of results, and remove the explicit Threads.MAX from Longs

---

Progress

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Issue

• JDK-8271840: Add simple Integer.toString microbenchmarks

Reviewers

• Aleksey Shipilev (@shipilev - Reviewer)

Reviewing

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Checkout this PR locally:
$ git fetch https://git.openjdk.java.net/jdk pull/4988/head:pull/4988
$ git checkout pull/4988

Update a local copy of the PR:
$ git checkout pull/4988
$ git pull https://git.openjdk.java.net/jdk pull/4988/head

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Checkout this PR locally:
$ git pr checkout 4988

View PR using the GUI difftool:
$ git pr show -t 4988

Using diff file

Download this PR as a diff file:
https://git.openjdk.java.net/jdk/pull/4988.diff

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[openjdk]

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[mlbridge]

Webrevs

• 00: Full (399ac40c)

[shipilev]

Looks fine.

[openjdk]

@cl4es 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:

8271840: Add simple Integer.toString microbenchmarks

Reviewed-by: shade

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 22 new commits pushed to the master branch:

• 977b8c4: 8271836: runtime/ErrorHandling/ClassPathEnvVar.java fails with release VMs
• 04134fc: 8264543: Cross modify fence optimization for x86
• 9e76909: 8271824: mark hotspot runtime/CompressedOops tests which ignore external VM flags
• e49b7d9: 8271828: mark hotspot runtime/classFileParserBug tests which ignore external VM flags
• 68f7847: 8271825: mark hotspot runtime/LoadClass tests which ignore external VM flags
• 3d40cac: 8271821: mark hotspot runtime/MinimalVM tests which ignore external VM flags
• 33ec3a4: 8271744: mark hotspot runtime/getSysPackage tests which ignore external VM flags
• b48f31d: 8271743: mark hotspot runtime/jni tests which ignore external VM flags
• 66c653c: 8271721: Split gc/g1/TestMixedGCLiveThreshold into separate tests
• 68dd828: 8271224: runtime/EnclosingMethodAttr/EnclMethodAttr.java doesn't check exit code
• ... and 12 more: https://git.openjdk.java.net/jdk/compare/c8add223a10030e40ccef42e081fd0d8f00e0593...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.

➡️ To integrate this PR with the above commit message to the master branch, type /integrate in a new comment.

[cl4es]

Looks fine.

Thanks!

/integrate

[openjdk]

Going to push as commit 55bd52a.
Since your change was applied there have been 50 commits pushed to the master branch:

• 18dd4d4: 8271121: ZGC: stack overflow (segv) when -Xlog:gc+start=debug
• 685fc3c: 8270903: sun.net.httpserver.HttpConnection: Improve toString
• 4abe531: 8271722: [TESTBUG] gc/g1/TestMixedGCLiveThreshold.java can fail if G1 Full GC uses >1 workers
• ea9a595: 8270058: Use Objects.check{Index,FromIndexSize} for java.desktop
• 64d18d4: 4819544: SwingSet2 JTable Demo throws NullPointerException
• 6c8441f: 8271878: UnProblemList jdk/jfr/event/gc/detailed/TestEvacuationFailedEvent.java in JDK18
• 7728423: 8271895: UnProblemList javax/swing/JComponent/7154030/bug7154030.java in JDK18
• cd6b54e: Merge
• cebcc07: 8271894: ProblemList javax/swing/JComponent/7154030/bug7154030.java in JDK17
• 5f547e8: 8271877: ProblemList jdk/jfr/event/gc/detailed/TestEvacuationFailedEvent.java in JDK17
• ... and 40 more: https://git.openjdk.java.net/jdk/compare/c8add223a10030e40ccef42e081fd0d8f00e0593...master

Your commit was automatically rebased without conflicts.

[openjdk]

@cl4es Pushed as commit 55bd52a.

💡 You may see a message that your pull request was closed with unmerged commits. This can be safely ignored.