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CFS quotas can lead to unnecessary throttling #67577

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@bobrik

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@bobrik

/kind bug

This is not a bug in Kubernets per se, it's more of a heads-up.

I've read this great blog post:

From the blog post I learned that k8s is using cfs quotas to enforce CPU limits. Unfortunately, those can lead to unnecessary throttling, especially for well behaved tenants.

See this unresolved bug in Linux kernel I filed a while back:

There's an open and stalled patch that addresses the issue (I've not verified if it works):

cc @ConnorDoyle @balajismaniam

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