RFR: 8293891: gc/g1/mixedgc/TestOldGenCollectionUsage.java (still) assumes that GCs take 1ms minimum

[Thomas Schatzl]

Hi all,

  please review this fix to a test that performs the faulty assumptions that collections take more than one ms.

Testing: local testing, passes even with changes to the test configuration that reproduce the issue 100%

Thanks,
  Thomas

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Commit messages:
 - initial version

Changes: https://git.openjdk.org/jdk/pull/10303/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=10303&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8293891
  Stats: 3 lines in 1 file changed: 0 ins; 3 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/10303.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/10303/head:pull/10303

PR: https://git.openjdk.org/jdk/pull/10303