From owner-freebsd-stable Sun Jul 2 13:25:21 2000 Delivered-To: freebsd-stable@freebsd.org Received: from sabre.velocet.net (sabre.velocet.net [198.96.118.66]) by hub.freebsd.org (Postfix) with ESMTP id 7DC0537B70B for ; Sun, 2 Jul 2000 13:25:18 -0700 (PDT) (envelope-from dgilbert@office.tor.velocet.net) Received: from office.tor.velocet.net (trooper.velocet.net [216.126.82.226]) by sabre.velocet.net (Postfix) with ESMTP id D2CEF137F36 for ; Sun, 2 Jul 2000 16:25:15 -0400 (EDT) Received: (from dgilbert@localhost) by office.tor.velocet.net (8.9.3/8.9.3) id QAA74889; Sun, 2 Jul 2000 16:25:15 -0400 (EDT) (envelope-from dgilbert) From: David Gilbert MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-ID: <14687.42282.873585.2561@trooper.velocet.net> Date: Sun, 2 Jul 2000 16:25:14 -0400 (EDT) To: freebsd-stable@freebsd.org Subject: Dump takes ages on SCSI. (several times faster on IDE) X-Mailer: VM 6.75 under 20.4 "Emerald" XEmacs Lucid Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG I have a PIII/450 with a venerable Adaptec 2940UW and a Quantum 9G SCSI disk. Recenly, I was generating many crash dumps and was using a serial console (so I was watching them). I came to a point in my debugging where I needed another PCI slot, so I removed the 2940 and loaded an IDE drive with the same build of FreeBSD. I then noticed that the IDE would crashdump somewhere around 10 times faster than the SCSI disk. Why? Can the SCSI speed be improved? Dave. -- ============================================================================ |David Gilbert, Velocet Communications. | Two things can only be | |Mail: dgilbert@velocet.net | equal if and only if they | |http://www.velocet.net/~dgilbert | are precisely opposite. | =========================================================GLO================ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message