[jdk11u-dev] RFR: 8276796: gc/TestSystemGC.java large pages subtest fails with ZGC [v2]

[Andrew Lu]

> I backport this for parity with 11.0.23-oracle.
> Backport for JDK-8269077 and JDK-8276796,
> for JDK-8269077, it's clean, as CMS test is remain in this file, only modify the '@test id=CMS', other added parts are clean. Local test pass.

Andrew Lu has updated the pull request incrementally with one additional commit since the last revision:

  add -XX:+UnlockExperimentalVMOptions

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Changes:
  - all: https://git.openjdk.org/jdk11u-dev/pull/2442/files
  - new: https://git.openjdk.org/jdk11u-dev/pull/2442/files/26a25bc4..c982127b

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=2442&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=2442&range=00-01

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/2442.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev.git pull/2442/head:pull/2442

PR: https://git.openjdk.org/jdk11u-dev/pull/2442