RFR: CODETOOLS-7902905: jcstress: Improve scheduling performance

Wed Apr 28 15:29:15 UTC 2021

Current scheduler walks the entire TestConfig list on every scheduling epoch. This was observed to be a bottleneck on large machines: the scheduler is unable to feed the entire machine with jobs. We can do much better by trying each scheduling class exactly once.

-------------

Commit messages:
 - CODETOOLS-7902905: jcstress: Improve scheduling performance

Changes: https://git.openjdk.java.net/jcstress/pull/36/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jcstress&pr=36&range=00
  Issue: https://bugs.openjdk.java.net/browse/CODETOOLS-7902905
  Stats: 118 lines in 7 files changed: 74 ins; 32 del; 12 mod
  Patch: https://git.openjdk.java.net/jcstress/pull/36.diff
  Fetch: git fetch https://git.openjdk.java.net/jcstress pull/36/head:pull/36

PR: https://git.openjdk.java.net/jcstress/pull/36