On Thu, 7 Aug 2025 14:03:40 GMT, Doug Lea <d...@openjdk.org> wrote: >> This set of updates reduces contention-based performance loss under heavy >> over-subscription, while also improving perfomance more generally. > > Doug Lea has updated the pull request incrementally with one additional > commit since the last revision: > > Avoid underutilization on resize
src/java.base/share/classes/java/util/concurrent/ForkJoinPool.java line 1299: > 1297: if (pool != null && > 1298: (a == null || // always signal on > resize > 1299: U.getReferenceAcquire(a, slotOffset(m & (s - 1))) > == null)) @DougLea Interesting. Is the reason that it is cheaper to check `a` for null here that it elides a nullcheck in the getReferenceAcquire? (even if it adds the cost of nulling out `a` after growArray()) ------------- PR Review Comment: https://git.openjdk.org/jdk/pull/26479#discussion_r2272612154
