Numerous Scheduler Changes Inbound For Linux 4.7

[phoronix]

Phoronix: Numerous Scheduler Changes Inbound For Linux 4.7

Ingo Molnar is once again quite punctual with submitting his pull requests for a newly-opened kernel cycle. One of his noteworthy updates mailed in today were for the kernel's scheduler changes...

http://www.phoronix.com/scan.php?page=news_item&px=Linux-4.7-Scheduler-Changes

[tajjada]

It will be interesting to run some heavily multithreaded benchmarks, to see if there is a significant difference in performance due to these changes.

[gamerk2]

It will be interesting to run some heavily multithreaded benchmarks, to see if there is a significant difference in performance due to these changes.

You're more likely to expose the scheduler problems if you have multiple high-workload tasks going at the same time. Most multi-threaded benchmarks tend to scale linearly, so an occasional non-running thread (on the order of hundreds microseconds) won't kill you. Having multiple tasks both fighting for those cores, however, is far more likely to expose the problems previously discovered.