RE: [PATCH 0/6] x86/cpu hotplug: Wake up offline CPU via mwait ornmi

[Peter Zijlstra]

On Tue, 2012-06-05 at 16:02 +0000, Yu, Fenghua wrote:
> 
> Users can consolidate processes on a few online CPU's and offline the
> rest when workload is light. 

No they can't, hotplug is a root only op.

> This consolidation can save more power and have better performance
> than idling CPU's because hot cache in online CPU's and offline CPU's
> can be allocated in same package. 

Yeah, or you fix the load-balancer to do this.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/