From owner-freebsd-current@FreeBSD.ORG  Sun Oct  2 19:23:01 2005
Return-Path: <owner-freebsd-current@FreeBSD.ORG>
X-Original-To: current@freebsd.org
Delivered-To: freebsd-current@FreeBSD.ORG
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id 20A2416A41F
	for <current@freebsd.org>; Sun,  2 Oct 2005 19:23:01 +0000 (GMT)
	(envelope-from kris@obsecurity.org)
Received: from elvis.mu.org (elvis.mu.org [192.203.228.196])
	by mx1.FreeBSD.org (Postfix) with ESMTP id AAB9E43D48
	for <current@freebsd.org>; Sun,  2 Oct 2005 19:23:00 +0000 (GMT)
	(envelope-from kris@obsecurity.org)
Received: from obsecurity.dyndns.org
	(CPE0050040655c8-CM00111ae02aac.cpe.net.cable.rogers.com
	[70.30.70.180]) by elvis.mu.org (Postfix) with ESMTP id 8E7FD1A3C1F;
	Sun,  2 Oct 2005 12:23:00 -0700 (PDT)
Received: by obsecurity.dyndns.org (Postfix, from userid 1000)
	id 499A251288; Sun,  2 Oct 2005 15:22:59 -0400 (EDT)
Date: Sun, 2 Oct 2005 15:22:59 -0400
From: Kris Kennaway <kris@obsecurity.org>
To: Divacky Roman <xdivac02@stud.fit.vutbr.cz>
Message-ID: <20051002192259.GA37178@xor.obsecurity.org>
References: <20051001085358.GA62022@stud.fit.vutbr.cz>
	<20051001154628.GA64006@xor.obsecurity.org>
	<20051002095828.GA51218@stud.fit.vutbr.cz>
Mime-Version: 1.0
Content-Type: multipart/signed; micalg=pgp-sha1;
	protocol="application/pgp-signature"; boundary="PNTmBPCT7hxwcZjr"
Content-Disposition: inline
In-Reply-To: <20051002095828.GA51218@stud.fit.vutbr.cz>
User-Agent: Mutt/1.4.2.1i
Cc: current@freebsd.org, Kris Kennaway <kris@obsecurity.org>
Subject: Re: 6.0R todo list - hash sizes
X-BeenThere: freebsd-current@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Discussions about the use of FreeBSD-current
	<freebsd-current.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>, 
	<mailto:freebsd-current-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-current>
List-Post: <mailto:freebsd-current@freebsd.org>
List-Help: <mailto:freebsd-current-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>,
	<mailto:freebsd-current-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Sun, 02 Oct 2005 19:23:01 -0000


--PNTmBPCT7hxwcZjr
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
Content-Transfer-Encoding: quoted-printable

On Sun, Oct 02, 2005 at 11:58:28AM +0200, Divacky Roman wrote:
> On Sat, Oct 01, 2005 at 11:46:28AM -0400, Kris Kennaway wrote:
> > On Sat, Oct 01, 2005 at 10:53:58AM +0200, Divacky Roman wrote:
> > > Hi,
> > >=20
> > > scottl@ removed:
> > >     <td>Nullfs (and perhaps other filesystems) use an absurdly small
> > >      hash size that causes significant performance penalties.</td>
> > >=20
> > > this item from 6.0R todo list. How was this solved? I didnt see any c=
ommits
> > > to enlarge the hash values. Its still the same... why it was removed =
then?
> >=20
> > It was an incorrect suggestion on my part - it turns out this was not
> > the cause of the performance penalties, and Jeff fixed them long ago.
> >=20
> > Kris
> >=20
>=20
> anyway - what sense does it make to have hash of size 4 entries? (fdescfs=
 has
> this for example)

It doesn't cause any performance penalty I can measure.

Kris
--PNTmBPCT7hxwcZjr
Content-Type: application/pgp-signature
Content-Disposition: inline

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.2 (FreeBSD)

iD8DBQFDQDOSWry0BWjoQKURAk5TAKC8c3cuep3+k2rR4iR+xvznohTqFgCgivk+
OUVOAFH7+pX/pnOzTYOAC20=
=PkqM
-----END PGP SIGNATURE-----

--PNTmBPCT7hxwcZjr--