Re: lmbench ctxsw regression with CFS

[Ingo Molnar]

* Nick Piggin <npiggin@xxxxxxx> wrote:

> > One thing to check out is whether the lmbench numbers are "correct". 
> > Especially on SMP systems, the lmbench numbers are actually *best* 
> > when the two processes run on the same CPU, even though that's not 
> > really at all the best scheduling - it's just that it artificially 
> > improves lmbench numbers because of the close cache affinity for the 
> > pipe data structures.
> 
> Yes, I bound them to a single core.

could you send me the .config you used?

	Ingo
-
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/