Date: Sun, 30 Sep 2001 05:55:11 -0700 (PDT) From: Mike Harding <mvh@ix.netcom.com> To: kris@obsecurity.org Cc: stable@FreeBSD.org Subject: Re: dirpref gives massive performance boost Message-ID: <20010930125511.B9899133B4@netcom1.netcom.com> In-Reply-To: <20010928141246.A15515@xor.obsecurity.org> (message from Kris Kennaway on Fri, 28 Sep 2001 14:12:46 -0700) References: <20010928141246.A15515@xor.obsecurity.org>
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Can some of this benefit be realized w/o the newfs? If I have a few directories like /usr/src, squid cache, etc, if I tar them up and then untar them, will they get the goods, or is the newfs absolutely necessary? I have a number of systems that have only one disk, and no 4.4-STABLE install CD, so obviously the newfs option with 4.4-STABLE is a little awkward... - Mike H. Date: Fri, 28 Sep 2001 14:12:46 -0700 From: Kris Kennaway <kris@obsecurity.org> Content-Type: multipart/signed; micalg=pgp-md5; protocol="application/pgp-signature"; boundary="7JfCtLOvnd9MIVvH" Content-Disposition: inline User-Agent: Mutt/1.2.5i Sender: owner-freebsd-stable@FreeBSD.ORG List-ID: <freebsd-stable.FreeBSD.ORG> List-Archive: <http://docs.freebsd.org/mail/>; (Web Archive) List-Help: <mailto:majordomo@FreeBSD.ORG?subject=help> (List Instructions) List-Subscribe: <mailto:majordomo@FreeBSD.ORG?subject=subscribe%20freebsd-stable> List-Unsubscribe: <mailto:majordomo@FreeBSD.ORG?subject=unsubscribe%20freebsd-stable> X-Loop: FreeBSD.ORG Precedence: bulk --7JfCtLOvnd9MIVvH Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Hi all, Just a note to those who have updated to 4.4-STABLE that it's well worth doing a backup + newfs + restore on all your UFS volumes. The "dirpref" UFS changes which went in after 4.4-RELEASE give a significant performance boost to common filesystem operations. For example: cvs update on my /usr/src from a local CVS repository used to take 1200 seconds, pre-dirpref. It now takes 400 seconds - that's a factor of 3 faster on a real-world benchmark. I forgot to time cvs update in ports before I newfs'ed, but I'd expect the performance gain to be even higher because the ports tree is chock full of directories. Truly impressive.. Kris --7JfCtLOvnd9MIVvH Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.6 (FreeBSD) Comment: For info see http://www.gnupg.org iD8DBQE7tOfOWry0BWjoQKURAg8jAJ9bDV1MEpaWxGHjoqGEoEj6eemoLACg+q0a UDjGbUjLeXnYtyHkjlj2Grc= =pQoi -----END PGP SIGNATURE----- --7JfCtLOvnd9MIVvH-- To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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