RFR: CODETOOLS-7902974: jcstress: Footprint estimator should balance both stride count and stride size

[Aleksey Shipilev]

Current "arrays.large" are failing with OOM because estimator only balances the stride count, while leaving stride size at 256. This is a recent regression.

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

Commit messages:
 - CODETOOLS-7902974: jcstress: Footprint estimator should balance both stride count and stride size

Changes: https://git.openjdk.java.net/jcstress/pull/77/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jcstress&pr=77&range=00
  Issue: https://bugs.openjdk.java.net/browse/CODETOOLS-7902974
  Stats: 20 lines in 1 file changed: 17 ins; 0 del; 3 mod
  Patch: https://git.openjdk.java.net/jcstress/pull/77.diff
  Fetch: git fetch https://git.openjdk.java.net/jcstress pull/77/head:pull/77

PR: https://git.openjdk.java.net/jcstress/pull/77