Messages in this thread |  | | | Date | Thu, 26 Nov 1998 03:38:10 +0000 | | From | Nate Thompson <> | | Subject | Re: Absolutely horrid IDE performance... |
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Mark Lord wrote:
> The PIIX4 chip supports UDMA, but not the PIIX or PIIX3 > (there are multiple versions of Intel "PIIX" chips, > and the first version, i82371FB, is called the "PIIX").
Well, I understand that is the case, however, the reporting on boot is just incorrect (I think). I just spent a bit of this evening taking a look at all of this on my machine.
Here are the boot messages:
ide: i82371 PIIX (Triton) on PCI bus 0 function 57 ide0: BM-DMA at 0xf000-0xf007 ide1: BM-DMA at 0xf008-0xf00f hda: Maxtor 87000D8, 6679MB w/256kB Cache, CHS=851/255/63, UDMA hdb: BCD-24X 1997-06-27, ATAPI CDROM drive ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
And here is what is in /proc/pci:
Bus 0, device 7, function 1: IDE interface: Intel 82371AB PIIX4 IDE (rev 1). Medium devsel. Fast back-to-back capable. Master Capable. Latency=64. I/O at 0xf000.
Here is the output from hdparm -tT /dev/hda:
/dev/hda: Timing buffer-cache reads: 128 MB in 1.64 seconds = 78.05 MB/sec Timing buffered disk reads: 64 MB in 7.11 seconds = 9.00 MB/sec
So it appears I have a PIIX4, which is not being correctly reported during bootup.
Nate
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