On Mon, 16 Nov 2015 15:32:38 -0800 Arjan van de Ven <ar...@linux.intel.com> wrote:
> On 11/16/2015 3:28 PM, Paul E. McKenney wrote: > > > Is this mostly an special-purpose embedded thing, or do you expect > > distros to be enabling this? If the former, I suggest > > , but if distros are doing this for > > general-purpose workloads, I instead suggest CONFIG_RCU_FAST_NO_HZ. > > thermal overload happens a lot on small devices, but sadly also in > big datacenters where it is not uncommon to underprovision cooling > capacity by a bit (it's one of those "99% of the time you only need > THIS much, the 1% you need 30% more" and that more is expensive or > even impractical) CONFIG_RCU_FAST_NO_HZ is more inline with idle injection in that both are targeted energy efficiency. Checking ubuntu and fedora, seems both have CONFIG_RCU_NOCB_CPU_ALL=y. -- 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/
