Date: Sun, 20 Jun 1999 11:48:53 -0700 From: Kent Stewart <kstewart@3-cities.com> To: Tetsuya Watanabe <tetsuya1@prodigy.net> Cc: freebsd-questions@FreeBSD.ORG Subject: Re: intel piix4 tuning Message-ID: <376D3795.613E1B1D@3-cities.com> References: <376D310F.F7CEDE2B@prodigy.net>
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Tetsuya Watanabe wrote: > > Hello, > > I would like to know how to turn on DMA33 or piomode4, at least, of > intel piix4 chip. I am sure wdc0 is a dma33 hdd. Thank you. I use the flags from the wdc2 example in the /sys/i386/conf/LINT on my HD controllers. The read rate on my main drive went from 3.8MB/s to 14+MB/s. My main drive supports UDMA33 and the rest are PIO 4. I used the same setting for all four drives. It negotiated down to what the device supported. Kent > > I have the following parameters in my kernel: > controller wdc0 at isa? port "IO_WD1" bio irq 14 > disk wd0 at wdc0 drive 0 > disk wd1 at wdc0 drive 1 > > controller wdc1 at isa? port "IO_WD2" bio irq 15 > disk wd2 at wdc1 drive 0 > disk wd3 at wdc1 drive 1 > > options ATAPI #Enable ATAPI support for IDE bus > options ATAPI_STATIC #Don't do it as an LKM > device acd0 #IDE CD-ROM > > I now have the following dmesg output: > ide_pci0: <Intel PIIX4 Bus-master IDE controller> rev 0x01 on pci0.7.1 > wdc0 at 0x1f0-0x1f7 irq 14 on isa > wdc0: unit 0 (wd0): <IBM-DHEA-36481> > wd0: 6197MB (12692736 sectors), 12592 cyls, 16 heads, 63 S/T, 512 B/S > wdc0: unit 1 (wd1): <ST33240A> > wd1: 3077MB (6303024 sectors), 6253 cyls, 16 heads, 63 S/T, 512 B/S > wdc1 at 0x170-0x177 irq 15 on isa > wdc1: unit 0 (wd2): <IBM-DCAA-34330> > wd2: 4134MB (8467200 sectors), 8400 cyls, 16 heads, 63 S/T, 512 B/S > wdc1: unit 1 (atapi): <NEC CD-ROM DRIVE:28C/3.02>, > removable, dma, iordy > acd0: drive speed 2412 - 5512KB/sec, 128KB cache > acd0: supported read types: CD-R, CD-RW, CD-DA > acd0: Audio: play, 256 volume levels > acd0: Mechanism: ejectable tray > acd0: Medium: no/blank disc inside, unlocked > > Tetsuya > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-questions" in the body of the message -- Kent Stewart Richland, WA mailto:kstewart@3-cities.com http://www.3-cities.com/~kstewart/index.html To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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