Re: [RFC PATCH v2 0/4] CPUs capacity information for heterogeneous systems

Juri Lelli
2016-01-20T10:22:16Z

On 19/01/16 21:10, Mark Brown wrote:
> On Tue, Jan 19, 2016 at 11:48:15AM -0800, Steve Muckle wrote:
> > On 01/19/2016 06:29 AM, Juri Lelli wrote:
>
> > > I'm generally seeing ~1sec increase in boot time for 1 and practically
> > > no difference for 2 (even after having added patches that provide
> > > runtime performance improvements).
>
> > One second is considerable IMO. Aside from the general desire to have
> > shorter boot times on any platform there are environments like
> > automotive where boot time is critical.
>
> Yeah, definitely. Is this actually blocking boot and if so can we
> arrange to do this in parallel with other activity (with likely knock on
> effects on reproducibility...)?

No, this goes in parallel. That's also showed by the fact that the
benchmarking thing itself usually takes more that 1 sec, but it seems to
impact for that amount of time only.