* subhra mazumdar <[email protected]> [2019-06-26 15:47:18]:
> For different workloads the optimal "softness" of soft affinity can be > different. Introduce tunables sched_allowed and sched_preferred that can > be tuned via /proc. This allows to chose at what utilization difference > the scheduler will chose cpus_allowed over cpus_preferred in the first > level of search. Depending on the extent of data sharing, cache coherency > overhead of the system etc. the optimal point may vary. > > Signed-off-by: subhra mazumdar <[email protected]> > --- Correct me but this patchset only seems to be concentrated on the wakeup path, I don't see any changes in the regular load balancer or the numa-balancer. If system is loaded or tasks are CPU intensive, then wouldn't these tasks be moved to cpus_allowed instead of cpus_preferred and hence breaking this soft affinity. -- Thanks and Regards Srikar Dronamraju
