machdep.cpu_idle_hlt and SMP perf?

[Marcin Jessa]

On Fri, 3 Feb 2006 17:51:14 -0500
Kris Kennaway <kris at obsecurity.org> wrote:

> On Fri, Feb 03, 2006 at 05:47:32PM -0500, Andrew Gallatin wrote:
> > 
> > Why dooes machdep.cpu_idle_hlt=1 drop my 10GbE network rx
> > performance by a considerable amount (7.5Gbs -> 5.5Gbs)?
> 
> I don't know, but I've set this to 0 on my machines because I also
> noticed a significant performance drop on general workloads with it
> set to 1.

On a 32 or 64-bits CPU?