On 08/16/2012 10:01 PM, Arjan van de Ven wrote: >> *Power policy*: >> >> So how is power policy different? As Peter says,'pack more than spread >> more'. > > this is ... a dubiously general statement. > > for good power, at least on Intel cpus, you want to spread. Parallelism is > efficient. > > the only thing you do not want to do, is wake cpus up for > tasks that only run extremely briefly (think "100 usec" or less).
It's a very important and valuable info! Just want to know how you get this? From CS cost or cache/TLB refill cost? > > so maybe the balance interval is slightly different, or more, you don't > balance tasks that > historically ran only for brief periods > > -- 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/
