8273438: Enable parallelism in vmTestbase/metaspace/stressHierarchy tests

[shipilev]

Clean backport to improve testing performance.

Additional testing:

• Linux x86_64 fastdebug vmTestbase/metaspace/stressHierarchy passes

---

Progress

• Change must not contain extraneous whitespace
• Commit message must refer to an issue

Issue

• JDK-8273438: Enable parallelism in vmTestbase/metaspace/stressHierarchy tests

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.java.net/jdk11u-dev pull/779/head:pull/779
$ git checkout pull/779

Update a local copy of the PR:
$ git checkout pull/779
$ git pull https://git.openjdk.java.net/jdk11u-dev pull/779/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 779

View PR using the GUI difftool:
$ git pr show -t 779

Using diff file

Download this PR as a diff file:
https://git.openjdk.java.net/jdk11u-dev/pull/779.diff

[bridgekeeper]

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[openjdk]

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

[openjdk]

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

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

8273438: Enable parallelism in vmTestbase/metaspace/stressHierarchy tests

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 no new commits pushed to the master branch. If another commit should be pushed before you perform the /integrate command, your PR will be automatically rebased. If you prefer to avoid any potential automatic rebasing, please check the documentation for the /integrate command for further details.

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[mlbridge]

Webrevs

• 00: Full (0e122fe6)

[shipilev]

Got the push approval.

/integrate

[openjdk]

Going to push as commit f69e75f.
Since your change was applied there have been 38 commits pushed to the master branch:

• 574c04c: 8273433: Enable parallelism in vmTestbase_nsk_sysdict tests
• 5ffd40d: 8273341: Update Siphash to version 1.0
• 0c4803b: 8278871: [JVMCI] assert((uint)reason < 2* _trap_hist_limit) failed: oob
• 3352b56: 8275326: C2: assert(no_dead_loop) failed: dead loop detected
• ad94355: 8251127: clean up FileInstaller $test.src $cwd in remaining vmTestbase_vm_compiler tests
• 9ca6369: 8252005: narrow disabling of allowSmartActionArgs in vmTestbase
• 32219ca: Merge
• 1453335: 8217375: jarsigner breaks old signature with long lines in manifest
• 55e5e04: 8270498: Improve SAX Parser configuration management
• 2a9bda7: 8279541: Improve HarfBuzz
• ... and 28 more: https://git.openjdk.java.net/jdk11u-dev/compare/66bdaa2f577982ecd8d40b17b2a61460ea623c3b...master

Your commit was automatically rebased without conflicts.

[openjdk]

@shipilev Pushed as commit f69e75f.

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