From owner-freebsd-current Tue Mar 2 1:21:17 1999 Delivered-To: freebsd-current@freebsd.org Received: from labinfo.iet.unipi.it (labinfo.iet.unipi.it [131.114.9.5]) by hub.freebsd.org (Postfix) with SMTP id 954E914C0F; Tue, 2 Mar 1999 01:21:09 -0800 (PST) (envelope-from luigi@labinfo.iet.unipi.it) Received: from localhost (luigi@localhost) by labinfo.iet.unipi.it (8.6.5/8.6.5) id IAA04173; Tue, 2 Mar 1999 08:12:17 +0100 From: Luigi Rizzo Message-Id: <199903020712.IAA04173@labinfo.iet.unipi.it> Subject: Re: ATA driver To: geoffr@is.co.za Date: Tue, 2 Mar 1999 08:12:17 +0100 (MET) Cc: sos@FreeBSD.ORG, current@FreeBSD.ORG In-Reply-To: <199903020906.LAA00297@hangdog.is.co.za> from "Geoff Rehmet" at Mar 2, 99 11:05:54 am X-Mailer: ELM [version 2.4 PL23] Content-Type: text Content-Length: 1089 Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG > Just some results of testing the comparison of wd and ata: ... > -Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks--- >Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU >ATA 64 3237 69.0 2913 14.0 1409 9.4 2951 59.3 3043 11.6 55.9 2.4 >WD 64 2556 54.5 2902 13.3 1457 9.7 1987 40.3 3082 13.2 59.1 2.0 > > It may be worth testing with a larger file, freshly booted, with no X > running. or a newer disk:) i use to see much better performance -- say 5MB/s even without DMA - on modern (say 3GB or greater) disks even on 133MHz machines. (on a PPro200 i think my 6.4GB IBM disk runs close to 10MB/s... cheers luigi -----------------------------------+------------------------------------- Luigi RIZZO . EMAIL: luigi@iet.unipi.it . Dip. di Ing. dell'Informazione HTTP://www.iet.unipi.it/~luigi/ . Universita` di Pisa TEL/FAX: +39-050-568.533/522 . via Diotisalvi 2, 56126 PISA (Italy) -----------------------------------+------------------------------------- To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message