From owner-freebsd-stable Fri Sep 28 14:12:50 2001 Delivered-To: freebsd-stable@freebsd.org Received: from obsecurity.dyndns.org (adsl-63-207-60-153.dsl.lsan03.pacbell.net [63.207.60.153]) by hub.freebsd.org (Postfix) with ESMTP id 806DE37B405 for ; Fri, 28 Sep 2001 14:12:47 -0700 (PDT) Received: by obsecurity.dyndns.org (Postfix, from userid 1000) id 0CFFA66D46; Fri, 28 Sep 2001 14:12:47 -0700 (PDT) Date: Fri, 28 Sep 2001 14:12:46 -0700 From: Kris Kennaway To: stable@FreeBSD.org Subject: dirpref gives massive performance boost Message-ID: <20010928141246.A15515@xor.obsecurity.org> Mime-Version: 1.0 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 Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG --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