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SubjectRe: [PATCH] KVM: Disable wake-affine vCPU process to mitigate lock holder preemption
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On 01/08/19 14:57, Dario Faggioli wrote:
> Can't we achieve this by removing SD_WAKE_AFFINE from the relevant
> scheduling domains? By acting on
> /proc/sys/kernel/sched_domain/cpuX/domainY/flags, I mean?
>
> Of course this will impact all tasks, not only KVM vcpus. But if the
> host does KVM only anyway...

Perhaps add flags to the unified cgroups hierarchy instead. But if the
"min_cap close to max_cap" heuristics are wrong they should indeed be fixed.

Paolo

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