Messages in this thread |  | | Date | Fri, 8 Sep 2006 13:19:28 -0700 (PDT) | From | Christoph Lameter <> | Subject | Re: [PATCH] Fix longstanding load balancing bug in the scheduler. |
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On Fri, 8 Sep 2006, Siddha, Suresh B wrote:
> On Fri, Sep 08, 2006 at 11:40:51AM -0700, Christoph Lameter wrote: > > The balancing operation is not that frequent and having to treat a special > > case in the callers would make code more complicated and likely offset the > > gains in this function. > > This solution as such is not accurate and clean :) and my suggestion is > not making it any more ugly. > > With increase in NR_CPUS, cost of cpumask operations will increase and > we shouldn't penalize the other logical threads or cores sharing the caches by > bringing in unnecessary cache lines.
One cacheline sized 128bytes will support all 1024 cpus that IA64 allows. cacheline align the cpumask?
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