8323635: Test gc/g1/TestHumongousAllocConcurrentStart.java fails with -XX:TieredStopAtLevel=3

[luchenlin]

I backport this for parity with 11.0.24-oracle.
This PR contains a backport of
openjdk/jdk@5045839
Patch is not clean, this file test/hotspot/jtreg/gc/g1/TestHumongousAllocInitialMark.java has changed by the commit
openjdk/jdk@d52a995
, I ignored this commits and only change code for this issue.

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Progress

• Change must be properly reviewed (1 review required, with at least 1 Reviewer)
• JDK-8323635 needs maintainer approval
• Change must not contain extraneous whitespace
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Issue

• JDK-8323635: Test gc/g1/TestHumongousAllocConcurrentStart.java fails with -XX:TieredStopAtLevel=3 (Bug - P4)

Reviewing

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Checkout this PR locally:
$ git fetch https://git.openjdk.org/jdk11u-dev.git pull/2717/head:pull/2717
$ git checkout pull/2717

Update a local copy of the PR:
$ git checkout pull/2717
$ git pull https://git.openjdk.org/jdk11u-dev.git pull/2717/head

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Checkout this PR locally:
$ git pr checkout 2717

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Download this PR as a diff file:
https://git.openjdk.org/jdk11u-dev/pull/2717.diff

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[bridgekeeper]

👋 Welcome back andrewlu! 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 (1ed461f3)

[luchenlin]

Not reproduced in 11. We can reopen it if needed.