Date: Fri, 29 May 1998 06:18:14 +0930 From: Greg Lehey <grog@lemis.com> To: Doug White <dwhite@resnet.uoregon.edu> Cc: chat@FreeBSD.ORG Subject: Re: Compatibility with Ultra IDE drives? Message-ID: <19980529061814.D25469@freebie.lemis.com> In-Reply-To: <Pine.BSF.3.96.980528110226.2373R-100000@gdi.uoregon.edu>; from Doug White on Thu, May 28, 1998 at 11:04:17AM -0700 References: <19980528102719.D342@freebie.lemis.com> <Pine.BSF.3.96.980528110226.2373R-100000@gdi.uoregon.edu>
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On Thu, 28 May 1998 at 11:04:17 -0700, Doug White wrote: > moving to chat ... > > On Thu, 28 May 1998, Greg Lehey wrote: > >>> My IDE drive in gdi. You can tell when it's working. The SCSI drive >>> could do a full search on itself and I'd never know it. >> >> What kind of transfers are you doing? With DMA, there's very little >> difference. > > Hm, I'll have to demo a UltraDMA computer. I'm only on standard IDE. Is > UltraDMA tothe point where it actually is a win? Originally the critics > were saying there was no win with ultradma. I'm sure the critics still say all sorts of things. I'm not sure one way or another. It's certainly a win against programmed transfer in a computer which doesn't wait for every transfer. SCSI is still faster for a multi-user system, but IDE has a lot going for it nowadays. You saw the figures: my make world was significantly faster with IDE than with SCSI. On the other hand, the system time was a little longer, which suggests that the transfers aren't quite as efficient. Greg -- See complete headers for address and phone numbers finger grog@lemis.com for PGP public key To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-chat" in the body of the message
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