On Fri, 10 May 2024 08:30:24 GMT, Viktor Klang <vkl...@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 > > src/java.base/share/classes/java/util/concurrent/ForkJoinPool.java line 2167: > >> 2165: } >> 2166: } >> 2167: return stat; > > @DougLea Since `stat` is a local, and is only written to once per branch it > might make sense to just return from each of the branches? A similar answer as above: using a single return avoids compiler generating branches to its own synthetic single return. Worthwhile only when whole method is of this form (I did check this one.) ------------- PR Review Comment: https://git.openjdk.org/jdk/pull/19131#discussion_r1596674193
