lkml.org 
[lkml]   [2010]   [Apr]   [5]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: A few questions and issues with dynticks, NOHZ and powertop
On 4/5/2010 8:14, Paul E. McKenney wrote:
> So the main issue is that for many workloads, it is best to run full bore
> and get done quickly, thus allowing the entire machine to be powered down?

yep

>
> If so, it seems likely that there would be some workloads that were sometimes
> unable to use all the CPUs, in which case shutting down (idling, offlining,
> dyntick-idling, whatever) the excess CPUs might nevertheless be the right
> thing to do.

but the point is that the normal scheduler + idle behavior gives you exactly that
in a natural way !
If you don't have enough work (tasks) to keep all cores busy, the others are and stay idle.


\
 
 \ /
  Last update: 2010-04-05 18:11    [from the cache]
©2003-2011 Jasper Spaans