Messages in this thread | | | Date | Tue, 22 Nov 2022 11:35:48 +0100 | From | Peter Zijlstra <> | Subject | Re: [PATCH v3] sched: async unthrottling for cfs bandwidth |
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On Mon, Nov 21, 2022 at 11:37:14AM -0800, Josh Don wrote: > Yep, this tradeoff feels "best", but there are some edge cases where > this could potentially disrupt fairness. For example, if we have > non-trivial W, a lot of cpus to iterate through for dispatching remote > unthrottle, and quota is small. Doesn't help that the timer is pinned > so that this will continually hit the same cpu.
We could -- if we wanted to -- manually rotate the timer around the relevant CPUs. Doing that sanely would require a bit of hrtimer surgery though I'm afraid.
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