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Description: sched/fair: Fix low cpu usage with high throttling by removing expiration of cpu-local slices
References:
https://github.com/kubernetes/kubernetes/issues/67577
https://relistan.com/the-kernel-may-be-slowing-down-your-app
https://bugzilla.kernel.org/show_bug.cgi?id=198197
Notes:
bwh> Apparently introduced in 4.18 by commit 512ac999d275 "sched/fair:
bwh> Fix bandwidth timer clock drift condition", which was backported to
bwh> 3.16 and 4.14.
Bugs:
upstream: released (5.4-rc1) [de53fd7aedb100f03e5d2231cfce0e4993282425]
4.19-upstream-stable: released (4.19.84) [502bd151448c2c76a927b26783e5538875c534ff]
4.9-upstream-stable: N/A "Vulnerability introduced later"
3.16-upstream-stable: released (3.16.81) [61749beefb4a12af7d91424bcd58ffdc072dad63]
sid: released (5.3.9-1)
4.19-buster-security: released (4.19.87-1)
4.9-stretch-security: N/A "Vulnerability introduced later"
3.16-jessie-security: released (3.16.81-1)
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