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Date:      Fri, 3 Feb 2006 17:51:14 -0500
From:      Kris Kennaway <kris@obsecurity.org>
To:        Andrew Gallatin <gallatin@cs.duke.edu>
Cc:        freebsd-current@freebsd.org
Subject:   Re: machdep.cpu_idle_hlt and SMP perf?
Message-ID:  <20060203225114.GA9845@xor.obsecurity.org>
In-Reply-To: <17379.56708.421007.613310@grasshopper.cs.duke.edu>
References:  <17379.56708.421007.613310@grasshopper.cs.duke.edu>

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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)?

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.

Kris

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