From owner-freebsd-scsi Mon Jan 3 21: 9:59 2000 Delivered-To: freebsd-scsi@freebsd.org Received: from feral.com (feral.com [192.67.166.1]) by hub.freebsd.org (Postfix) with ESMTP id 0CBBB14E54 for ; Mon, 3 Jan 2000 21:09:55 -0800 (PST) (envelope-from mjacob@feral.com) Received: from beppo.feral.com (beppo [192.67.166.79]) by feral.com (8.9.3/8.9.3) with ESMTP id VAA07767; Mon, 3 Jan 2000 21:07:40 -0800 Date: Mon, 3 Jan 2000 21:09:52 -0800 (PST) From: Matthew Jacob Reply-To: mjacob@feral.com To: Adam Cc: scsi@FreeBSD.ORG Subject: Re: sym troubles In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-scsi@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org Not if the xfer size is small enough such that it's held in the drive's buffer, in which case the bus speed should show up. On Mon, 3 Jan 2000, Adam wrote: > Ah. but would this help seeing as how the max speed of a 40x cdrom would > be 40 * 150kb/sec = 6MB/sec? > > On Mon, 3 Jan 2000, Matthew Jacob wrote: > > > > >semuta.feral.com > root rdsame /dev/rwd0c 2k 0 1000 > >Read 2048000 bytes in 0.866316 seconds, 2308.63KB/sec in 2048 byte blocks > >semuta.feral.com > root rdsame /dev/rwd0c 1k 0 10 > >Read 10240 bytes in 0.6581 seconds, 1519.53KB/sec in 1024 byte blocks > > > >... > > > >reads from device in blocksize blocks (m or k suffix to indicate KByte or > >MByte) starting at seek offset OFFSETBLK repeated NBLKS times. > > > > > >On Mon, 3 Jan 2000, Adam wrote: > > > >> (user1)sapphire:/root % ./stuff > >> Usage: ./stuff device blksize offsetblk nblks > >> Huh? > >> > >> On Mon, 3 Jan 2000, Matthew Jacob wrote: > >> > >> > > >> >Usually drives cache some amount of info- CDs, maybe not. Use the attached > >> >to find out. > >> > > >> > > >> >> On Mon, 3 Jan 2000, Matthew Jacob wrote: > >> >/* > >> > * Copyright (c) 1998, Matthew Jacob > >> > > > > > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message