From owner-freebsd-questions  Mon Sep  3 18:36: 6 2001
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Date: Mon, 3 Sep 2001 18:35:59 -0700
From: Kris Kennaway <kris@obsecurity.org>
To: Kory Hamzeh <kory@avatar.com>
Cc: freebsd-questions@FreeBSD.ORG
Subject: Re: Disk Buffer Cache Size
Message-ID: <20010903183559.A39443@xor.obsecurity.org>
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In-Reply-To: <009a01c134dd$30078320$14ce21c7@avatar.com>; from kory@avatar.com on Mon, Sep 03, 2001 at 06:01:54PM -0700
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On Mon, Sep 03, 2001 at 06:01:54PM -0700, Kory Hamzeh wrote:
>=20
> I've been trying to figure out how FreeBSD determines the size of the disk
> buffer cache and if this size is tunable. Any information on this would be
> great.

As far as I understand it, FreeBSD does not have a separate disk
buffer cache, it uses the regular VM system and therefore the
effective amount of memory devoted to disk buffers is dynamically
tuned at runtime based on VM load and allocation demands.

See http://www.freebsd.org/doc/en_US.ISO8859-1/books/developers-handbook/vm=
.html#INTERNALS-VM

for more.

Kris

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