Messages in this thread | | | Date | Fri, 8 Sep 2006 17:03:52 -0700 | From | "Siddha, Suresh B" <> | Subject | Re: [PATCH] Fix longstanding load balancing bug in the scheduler. |
| |
On Fri, Sep 08, 2006 at 01:19:28PM -0700, Christoph Lameter wrote: > 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?
one or more, it is unnecessary for the common case.
thanks, suresh - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |