rich7420 commented on PR #11137:
URL: https://github.com/apache/ozone/pull/11137#issuecomment-5450997629
Quick JMH check of `HeapEntry.compareTo` (before = comparator built per
call, after = hoisted static), JDK 21:
```
perCall (before) 7.6 ns/op 56 B/op
hoisted (after) 1.4 ns/op ~0 B/op
```
JIT escape analysis does not remove the per-call comparator, so the hoist is
real: ~56 B/op eliminated and ~5x faster per compare. Small in absolute terms
(a few compares per listed entry), but not a no-op. Standalone JMH, not part of
the PR.
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