Date: Sun, 19 Oct 1997 23:43:41 -0700 (PDT) From: Julian Elischer <julian@whistle.com> To: Martin Nilsson <martin@filex.se> Cc: freebsd-hardware@FreeBSD.ORG Subject: Re: FreeBSD and IDE drives Message-ID: <Pine.BSF.3.95.971019234212.19680H-100000@current1.whistle.com> In-Reply-To: <3447B2B7.6445@filex.se>
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The ide driver in 3.0 can detect and use ultra-dma via PCI. that in the 2.2 series cannot. (it is being ported to 2.2-stable for testing and will be merged back) On Fri, 17 Oct 1997, Martin Nilsson wrote: > How good are the IDE/ATA drivers in FreeBSD? > > I'm running 2.2.1 on a 430TX based motherboard with a 4.3GB Quantum > Ultra DMA harddrive. When I boot the system FreeBSD detects the PCI IDE > controller but doesn't assign a driver for it, instead the IDE > controller is detected and used when the ISA bus is scanned. > > How fast is the communication between the drive and controller? > The drive has a maximum thruput of about 10MB/s > > Would there be any benefit if the driver used the PIIX4 chip in DMA > busmaster mode? > > > > /Martin >
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