Re: [PATCH v6 3/6] sched: add utilization_avg_contrib

Morten Rasmussen
2014-10-03T16:06:10Z

On Fri, Oct 03, 2014 at 04:14:51PM +0100, Peter Zijlstra wrote:
> On Fri, Oct 03, 2014 at 04:51:01PM +0200, Vincent Guittot wrote:
> > On 3 October 2014 16:36, Peter Zijlstra <peterz@infradead.org> wrote:
> > >
> > >> + * utilization_load_avg is the sum of the average running time of the
> > >> + * sched_entities on the rq.
> > >> */
> > >
> > > So I think there was some talk about a blocked_utilization thingy, which
> > > would track the avg running time of the tasks currently asleep, right?
> > >
> >
> > yes. Do you mean that we should anticipate and rename
> > utilization_load_avg into utilization_runnable_avg to make space for a
> > utilization_blocked_avg that could be added in future ?
>
> nah, just trying to put things straight in my brain, including what is
> 'missing'.

As Ben pointed out in the scale-invariance thread, we need blocked
utilization. I fully agree with that. It doesn't make any sense not to
include it. In fact I do have the patch already.

If you want to rename utlization_load_avg you should name it
utilization_running_avg, not utilization_runnable_avg :) Or even better,
something shorter.