On Fri, 10 May 2024 08:15:59 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 1883: > >> 1881: if (qs == null) >> 1882: break; >> 1883: if (qs.length <= i) > > @DougLea Any particular reason why these are not or-branches of a single if? An old trick to save bytecode branches, reducing code size. I haven't checked lately whether this is still true though. ------------- PR Review Comment: https://git.openjdk.org/jdk/pull/19131#discussion_r1596670378
