Re: [patch] sched: group CPU power setup cleanup

[Peter Williams]

Paul Jackson wrote:
> > > Hope not.  To me, "computing power" means megaflops/sec, or Dhrystones
> > > (don't ask) or whatever.  If that's what "cpu_power" is referring to then
> > > the name is hopelessly ambiguous with peak joules/sec and a big renaming is
> > > due.
> > It refers to group's processing power. Perhaps "horsepower" is better term.
>
> Well ... I don't think "horsepower" is a step in the right direction.
>
> Andrew's point was over the word "power", not "cpu".  The term
> "cpu_power" suggested to him we were concerned with the power supply
> watts consumed by a group of CPUs.  Indeed, both those concerned with
> laptop battery lifetimes, and the air conditioning tonnage needed
> for big honkin NUMA iron might have reason to be concerned with the
> power consumed by CPUs.
>
> Changing the word "cpu" to "horse", but keeping the word "power",
> does nothing to address Andrew's point.  Rather it just adds more
> confusion.  We are obviously dealing with CPUs here, not horses.
>
> My understanding is that the "cpu_power" of the cpus in a sched group
> is rougly proportional to the BogoMIPS of the CPUs in that group.

How about energy instead of power?  I.e. the CPU's capacity to do work.

Peter
--
Peter Williams                                   pwil3058@xxxxxxxxxxxxxx

"Learning, n. The kind of ignorance distinguishing the studious."
 -- Ambrose Bierce
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