From owner-freebsd-stable Sun Apr 19 22:07:57 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id WAA25410 for freebsd-stable-outgoing; Sun, 19 Apr 1998 22:07:57 -0700 (PDT) (envelope-from owner-freebsd-stable@FreeBSD.ORG) Received: from NIH2WAAD (smtp4.site1.csi.com [149.174.183.73]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id FAA25323 for ; Mon, 20 Apr 1998 05:07:27 GMT (envelope-from berend@pobox.com) Received: from mail pickup service by csi.com with Microsoft SMTPSVC; Mon, 20 Apr 1998 01:06:52 -0400 Received: from auke.deboer (ld39-041.lon.compuserve.com [195.232.21.41]) by hil-img-ims-4.compuserve.com (8.8.6/8.8.6/IMS-1.2) with ESMTP id BAA16856; Mon, 20 Apr 1998 01:06:42 -0400 (EDT) Received: from bmach (bmach.deboer [192.168.33.3]) by auke.deboer (8.8.8/8.8.7) with SMTP id VAA16594; Sat, 18 Apr 1998 21:11:50 +0200 (CEST) (envelope-from berend@pobox.com) Received: by localhost with Microsoft MAPI; Sat, 18 Apr 1998 21:11:16 +0200 Message-ID: <01BD6B0E.863498B0.berend@pobox.com> From: Berend de Boer To: "'Mike Smith'" Cc: "stable@FreeBSD.ORG" Subject: best sd0 flags ? (was wdc0) Date: Sat, 18 Apr 1998 21:11:14 +0200 Organization: NederWare X-Mailer: Microsoft Internet E-mail/MAPI - 8.0.0.4211 MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk On Saturday, April 18, 1998 6:46 PM, Mike Smith [SMTP:mike@smith.net.au] wrote: > We've been duplicating 3GB Western Digital disks the last few days under > 2.2.6, flags 0x80ff80ff on 166MHz P5/430TX boards, and averaging about > 5M/sec throughput. Try 'dd if=/dev/wd1 of=/dev/null bs=1m' to get an > idea of your raw disk speed as opposed to filesystem throughput. Hmm, something is seriously wrong here it seems. I've a Pentium II, 233MHz, 128MB, Adaptec Ultra Wide SCSI and SCSI 2 4GB IBM drive. Using the above code I get an average of 2MB. Is there something seriously wrong with this system? And how can I tune it? I've compiled a custom kernel with P686 enabled and removed some devices. That's all I did. Groetjes, Berend. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message