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Date: Sat, 12 Nov 2005 15:06:28 -0500
From: Kris Kennaway <kris@obsecurity.org>
To: Tarasov Alexey <lexa@wincmd.ru>
Message-ID: <20051112200627.GD56633@xor.obsecurity.org>
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Cc: freebsd-stable@freebsd.org
Subject: Re: Reduced hard disk perfomance on 5.4 with SMP
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On Sat, Nov 12, 2005 at 10:50:03PM +0300, Tarasov Alexey wrote:
> Hello!
>=20
> I have a server Double Xeon 2.4 GHz with Hyperthreading on.

> Operations with hard disk (e.g. unpacking huge .tgz archive with a lot=20
> of files) are very slow. Why it can be?

VFS was Giant-locked on 5.4, and there is contention between multiple
processes (e.g. tar and bufdaemon).  Try 6.0 instead.

Kris

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