On Wed, 2012-08-22 at 06:02 -0700, Arjan van de Ven wrote: > On 8/21/2012 10:41 PM, Mike Galbraith wrote: > > On Tue, 2012-08-21 at 17:02 +0100, Alan Cox wrote: > > > >> I'd like to see actual numbers and evidence on a wide range of workloads > >> the spread/don't spread thing is even measurable given that you've also > >> got to factor in effects like completing faster and turning everything > >> off. I'd *really* like to see such evidence on a laptop,which is your > >> one cited case it might work. > > > > For my dinky dual core laptop, I suspect you're right, but for a more > > powerful laptop, I'd expect spread/don't to be noticeable. > > yeah if you don't spread, you will waste some power. > but.. current linux behavior is to spread. > so we can only make it worse.
Hm, so I can stop fretting about select_idle_sibling(). Good. > > Yeah, hard numbers would be nice to see. > > > > If I had a powerful laptop, I'd kill irq balancing, and all but periodic > > load balancing, and expect to see a positive result. > > I'd expect to see a negative result ;-) Ok, so I have my head on backward. Gives a different perspective :) -Mike -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
