Re: [patch] CFS scheduler, v3

[Christoph Lameter]

On Fri, 20 Apr 2007, William Lee Irwin III wrote:

> On Wed, 18 Apr 2007, William Lee Irwin III wrote:
> >> 
> >> Mark the runqueues ____cacheline_aligned_in_smp to avoid false sharing.
> 
> On Fri, Apr 20, 2007 at 12:24:17PM -0700, Christoph Lameter wrote:
> > False sharing for a per cpu data structure? Are we updating that 
> > structure from other processors?
> 
> Primarily in the load balancer, but also in wakeups.

That is fairly rare I think. What other variables that are also writtten 
frequently would cause false sharing?


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