Commit de53fd7aedb1 ("sched/fair: Fix low cpu usage with high
throttling by removing expiration of cpu-local slices") fixes a major
performance issue for containerized clouds such as Kubernetes.
Commit de53fd7aedb1 Fixes commit : 512ac999d275 ("sched/fair: Fix
bandwidth timer clock drift condition").
This should be applied to all stable kernels that applied commit
512ac999d275, and should probably be applied to all others as well.
The issues introduced by these pathes can be read about on the
Kubernetes github.
https://github.com/kubernetes/kubernetes/issues/67577
It may also be prudent to also apply the not yet accepted patch that
fixes some introduced compiler warnings discussed here.
https://lkml.org/lkml/2019/9/18/925
Thank you,
Dave Chiluk
