On Fri, 31 May 2024 13:18:33 GMT, Doug Lea <d...@openjdk.org> wrote:
>> This set of changes address causes of poor utilization with small numbers of
>> cores due to overly aggressive contention avoidance. A number of further
>> adjustments were needed to still avoid most contention effects in
>> deployments with large numbers of cores
>
> Doug Lea has updated the pull request incrementally with one additional
> commit since the last revision:
>
> Reconcile changes
src/java.base/share/classes/java/util/concurrent/ForkJoinPool.java line 1345:
> 1343: int b = base, p = top, cap;
> 1344: if (p - b > 0 && a != null && (cap = a.length) > 0) {
> 1345: for (int m = cap - 1, s, nb;;) {
@DougLea I'm curious, what effect did you see if moving the `p - b > 0` out of
the loop conditional?
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PR Review Comment: https://git.openjdk.org/jdk/pull/19131#discussion_r1623453077
