From owner-freebsd-scsi Sun Mar 14 11:20:44 1999 Delivered-To: freebsd-scsi@freebsd.org Received: from sax.sax.de (sax.sax.de [193.175.26.33]) by hub.freebsd.org (Postfix) with ESMTP id 752DF14BE6 for ; Sun, 14 Mar 1999 11:20:41 -0800 (PST) (envelope-from j@uriah.heep.sax.de) Received: (from uucp@localhost) by sax.sax.de (8.8.8/8.8.8) with UUCP id UAA03991 for freebsd-scsi@FreeBSD.ORG; Sun, 14 Mar 1999 20:20:23 +0100 (CET) (envelope-from j@uriah.heep.sax.de) Received: (from j@localhost) by uriah.heep.sax.de (8.9.3/8.9.1) id UAA19391; Sun, 14 Mar 1999 20:19:47 +0100 (MET) (envelope-from j) Message-ID: <19990314201946.00024@uriah.heep.sax.de> Date: Sun, 14 Mar 1999 20:19:46 +0100 From: J Wunsch To: freebsd-scsi@FreeBSD.ORG Subject: Re: cvs commit: src/sys/cam cam_xpt.c Reply-To: Joerg Wunsch References: <19990314133528.A4071@keltia.freenix.fr> <199903141441.PAA71438@qix> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 0.88 In-Reply-To: <199903141441.PAA71438@qix>; from Jean-Marc Zucconi on Sun, Mar 14, 1999 at 03:41:29PM +0100 X-Phone: +49-351-2012 669 X-PGP-Fingerprint: DC 47 E6 E4 FF A6 E9 8F 93 21 E0 7D F9 12 D6 4E Sender: owner-freebsd-scsi@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org As Jean-Marc Zucconi wrote: > Yes this is very poor for a wide drive. On my narrow DCAS-34330: > Writing the 250 Megabyte file, 'iozone.tmp'...80.351562 seconds > Reading the file...38.601562 seconds > > IOZONE performance measurements: > 3262463 bytes/second for writing the file > 6791020 bytes/second for reading the file I get about 4.4 MB/s writing and 5.8 MB/s reading, with tagged queuing still enabled. I also get better bonnie figures than those mentioned in PR kern/10398, about 4 MB/s `Per Char' and 5 MB/s `Block'. However, as Ken already mentioned, see the audit-trail from PR 10398 for a counterexample. -- cheers, J"org joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ -- NIC: JW11-RIPE Never trust an operating system you don't have sources for. ;-) To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message