From owner-freebsd-stable Mon Jul 22 12:50:24 2002 Delivered-To: freebsd-stable@freebsd.org Received: from mx1.FreeBSD.org (mx1.FreeBSD.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 1166C37B400; Mon, 22 Jul 2002 12:50:20 -0700 (PDT) Received: from freefall.freebsd.org (freefall.FreeBSD.org [216.136.204.21]) by mx1.FreeBSD.org (Postfix) with ESMTP id BC29943E65; Mon, 22 Jul 2002 12:50:19 -0700 (PDT) (envelope-from jmz@FreeBSD.org) Received: from freefall.freebsd.org (jmz@localhost [127.0.0.1]) by freefall.freebsd.org (8.12.4/8.12.4) with ESMTP id g6MJoJJU080269; Mon, 22 Jul 2002 12:50:19 -0700 (PDT) (envelope-from jmz@freefall.freebsd.org) Received: (from jmz@localhost) by freefall.freebsd.org (8.12.4/8.12.4/Submit) id g6MJoJSH080255; Mon, 22 Jul 2002 12:50:19 -0700 (PDT) Date: Mon, 22 Jul 2002 12:50:19 -0700 (PDT) Message-Id: <200207221950.g6MJoJSH080255@freefall.freebsd.org> From: Jean-Marc Zucconi To: Matthew Dillon Cc: Andreas Koch , freebsd-stable@FreeBSD.ORG Subject: Re: 4.6-RC: Glacial speed of dump backups In-Reply-To: <200207221943.g6MJhIBX054785@apollo.backplane.com> References: <20020606204948.GA4540@ultra4.eis.cs.tu-bs.de> <20020722081614.E367@gsmx07.alcatel.com.au> <20020722100408.GP26095@ultra4.eis.cs.tu-bs.de> <200207221943.g6MJhIBX054785@apollo.backplane.com> X-Mailer: Emacs 21.2.1 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 >>>>> Matthew Dillon writes: > Here are the preliminary results when I test this dumping /usr > to /dev/null: > DUMP: finished in 140 seconds, throughput 6413 KBytes/sec (8 MB cache) > DUMP: finished in 144 seconds, throughput 6235 KBytes/sec (4 MB cache) > DUMP: finished in 234 seconds, throughput 3836 KBytes/sec (0 MB cache) I also got a factor ~2 of in speed for a fs with a lot of inodes (~ncvs) and no significant difference on / Jean-Marc -- Jean-Marc Zucconi -- PGP Key: finger jmz@FreeBSD.org [KeyID: 400B38E9] To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message