Re: [PATCH v6 0/6] sched_ext: Support high-performance monotonically non-decreasing clock

[Changwoo Min]

Hi Andrea,

On 24. 12. 21. 07:29, Andrea Righi wrote:
> I've tested this patch set and I haven't observed any significant
> performance improvements (but also no regressions), even if the systems
> I've tested are likely quite efficient at reading the hardware TSC.

Thank you for the testing. I am glad to hear that there is no
performance regression on an TSC-efficient system.

> I'm curious if we'd see a more significant difference in non-hardware
> virtualized systems (i.e., qemu without kvm). Have you done any testing in
> such environments already?

Well, I guess the gain is mostly relevant to how inefficient TSC
is in the system and how much a workload stresses TSC.

Regards,
Changwoo Min