On Sunday, March 11, 2018 8:43:02 AM CET Doug Smythies wrote:
> On 2018.03.10 15:55 Rafael J. Wysocki wrote:
> >On Saturday, March 10, 2018 5:07:36 PM CET Doug Smythies wrote:
> >> On 2018.03.10 01:00 Rafael J. Wysocki wrote:
> ... [snip] ...
> > The information that they often spend more time than a tick
> > period in state 0 in one go *is* relevant, though.
> > That issue can be dealt with in a couple of ways and the patch below is a
> > rather straightforward attempt to do that. The idea, basically, is to
> > discard
> > the result of governor prediction if the tick has been stopped alread and
> > the predicted idle duration is within the tick range.
> > Please try it on top of the v3 and tell me if you see an improvement.
> It seems pretty good so far.
> See a new line added to the previous graph, "rjwv3plus".
Below is a respin of the last patch which also prevents shallow states from
being chosen due to interactivity_req when the tick is stopped.
You may also add a poll_idle() fix I've just posted:
on top of this. It makes quite a bit of a difference for me. :-)
> I'll do another 100% load on one CPU test overnight, this time with
> a trace.