On Fri, Nov 15, 2024 at 10:20 PM Len Brown <lenb@xxxxxxxxxx> wrote: > > Re: if short sleep then use usleep_range() > > I think we all agree on this. > > Though in the ACPI flows that brought up this topic, setting max to > anything other than min is simply a request for bad performance. I disagree with the "bad performance" statement. Performance lower than the possible maximum doesn't necessarily count as "bad". > Re: if long sleeps then use msleep() > > ... because a jiffy based timer effectively forces coalescing, and is > the lowest overhead. > > The problem with this logic is, as you mention, coalescing is a > function of the distribution of timer expirations over time,it is not > a function of the duration of those timers. I just think that high precision is not necessary for long timeouts. I also don't think that ASL programmers expect high precision in those cases.
