Date: Wed, 01 Sep 1999 10:40:04 +0930 (CST) From: "Daniel O'Connor" <doconnor@gsoft.com.au> To: Kevin Street <street@iname.com> Cc: current@FreeBSD.ORG, Soren Schmidt <sos@freebsd.dk>, Matthew Dillon <dillon@apollo.backplane.com> Subject: Re: HEADS UP! ATA driver (atapi DMA).. Message-ID: <XFMail.990901104004.doconnor@gsoft.com.au> In-Reply-To: <87906repae.fsf@mired.eh.local>
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[-- Attachment #1 --] On 31-Aug-99 Kevin Street wrote: > > Well 2MB/sec == 14x CDRom drive. Is it a 14x CDRom drive? CDRom > > drives are typically limited to how quickly they can get data off > > the platter. A faster bus transfer will not improve that. > I should have mentioned that ... it's a 32x cdrom. dmesg says it > claims to be able to do 5515 KB/sec. Which is slightly more correct.. 32x = 32 * 150 = 4800 kb/s 1 spin = 150kb/sec Of course given the advent of CLV drives a speed rating is now usually the maximum read speed, not the average. --- Daniel O'Connor software and network engineer for Genesis Software - http://www.gsoft.com.au "The nice thing about standards is that there are so many of them to choose from." -- Andrew Tanenbaum [-- Attachment #2 --] -----BEGIN PGP MESSAGE----- Version: 2.6.3ia iQCVAwUBN8x87FbYW/HEoF9pAQFUdgQAmEGCYlxW5qfHnjs82p8zhX00wX/eyMtQ X+wyZzgm3rcE1duT73NXRfDg6Ympq6GazUoMLns7upL6/LFhhyUgnSy9Qi8m4elR zTqmIB2Ld95q+DM2iWAzsdeMM5EKbXuhPWlXxg+U5mnpT/8T/SDb8XNY1jDbtJSV Rl6ybRu6tvs= =jhFS -----END PGP MESSAGE-----help
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