Date: Tue, 13 Apr 1999 01:24:29 -0500 (CDT) From: Adam Dace <awd@kiwi.pyro.net> To: Greg Lehey <grog@lemis.com> Cc: rick hamell <hamellr@dsinw.com>, freebsd-questions@FreeBSD.ORG Subject: Re: Supported Socket 7 Motherboard UDMA Chipsets ? Message-ID: <Pine.LNX.4.00.9904130119460.9035-100000@kiwi.pyro.net> In-Reply-To: <19990413121808.A74226@lemis.com>
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On Tue, 13 Apr 1999, Greg Lehey wrote: > On Monday, 12 April 1999 at 10:39:32 -0700, rick hamell wrote: > "*at least*"? I don't know any SCSI drives which will sustain 30 > MB/s. Interesting to note that our big RAID 0+1 array at work only can sustain approx 11MB/sec. Looks to me like UDMA is catching up. :) > In fact, the maximum transfer rates between IDE and SCSI aren't that > different. What's different is the positioning time, which in a > random-access mode is just as important. Definitely food for thought. > The chip sets for which FreeBSD has specific support are listed in the > function ide_pci_probe, in /sys/pci/ide_pci.c. The following is the > listing from 4.0-CURRENT; you'll probably find that one or the other > is missing in earlier versions. I didn't even realize 4.0 was under development. Doh! I'll take another dive through cvsweb. Thanks for the list! --Adam To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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