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Date: Sat, 4 Feb 2006 14:35:10 -0500
From: Kris Kennaway <kris@obsecurity.org>
To: Marcin Jessa <lists@yazzy.org>
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Cc: freebsd-current@freebsd.org, gallatin@cs.duke.edu,
	Kris Kennaway <kris@obsecurity.org>
Subject: Re: machdep.cpu_idle_hlt and SMP perf?
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On Sat, Feb 04, 2006 at 11:15:35AM +0000, Marcin Jessa wrote:
> On Fri, 3 Feb 2006 17:51:14 -0500
> Kris Kennaway <kris@obsecurity.org> wrote:
>=20
> > On Fri, Feb 03, 2006 at 05:47:32PM -0500, Andrew Gallatin wrote:
> > >=20
> > > Why dooes machdep.cpu_idle_hlt=3D1 drop my 10GbE network rx
> > > performance by a considerable amount (7.5Gbs -> 5.5Gbs)?
> >=20
> > 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.
>=20
> On a 32 or 64-bits CPU?

I only measured on i386.

Kris


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