From owner-freebsd-current Wed Nov 12 20:33:36 1997 Return-Path: Received: (from root@localhost) by hub.freebsd.org (8.8.7/8.8.7) id UAA12390 for current-outgoing; Wed, 12 Nov 1997 20:33:36 -0800 (PST) (envelope-from owner-freebsd-current) Received: from nomis.i-connect.net (nomis.i-Connect.Net [206.190.143.100]) by hub.freebsd.org (8.8.7/8.8.7) with SMTP id UAA12369 for ; Wed, 12 Nov 1997 20:33:31 -0800 (PST) (envelope-from shimon@i-connect.net) Received: (qmail 28127 invoked by uid 1000); 13 Nov 1997 04:33:49 -0000 Message-ID: X-Mailer: XFMail 1.2-beta-111097 [p0] on FreeBSD X-Priority: 3 (Normal) Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit MIME-Version: 1.0 In-Reply-To: <346A081E.DBC2798E@excite.com> Date: Wed, 12 Nov 1997 20:33:48 -0800 (PST) Organization: Atlas Telecom From: Simon Shapiro To: kingson@excite.com Subject: RE: cp is slow... Cc: freebsd-current@FreeBSD.ORG Sender: owner-freebsd-current@FreeBSD.ORG X-Loop: FreeBSD.org Precedence: bulk Hi Kingson Gunawan; On 12-Nov-97 you wrote: > I noticed that the cp (copy) command is extremely slow on my system > (-current). On average 'cp' copy rate is somewhere around 100kB/sec, > while when I tried 'dd' (with bs=64k) the rate jumped to around > 2-3MB/sec. Even at this rate, it is nowhere close to the perfomance I'd > expect from the Fast UW SCSI system. The test file size is 100MB. The > copy is done using both 2 drives and 1 drive. > Is this to be expected? Dunno (but could guess :-) about cp, but copying with dd adds up to 4-6MB/Sec, on a single bus which is typical. --- If Microsoft Built Cars: Every time they repainted the lines on the road, you'd have to buy a new car. Sincerely Yours, Simon Shapiro Atlas Telecom Senior Architect 14355 SW Allen Blvd., Suite 130 Beaverton OR 97005 Shimon@i-Connect.Net Voice: 503.799.2313