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SubjectRE: Disk Performance
try
hdparm -d1 /dev/hda
hdparm -d1 /dev/hdb
and test them now
On Fri, 9 Nov 2001, Torrey Hoffman wrote:

> Erik Andersen wrote:
>
> >The Promise controller has two identical 46.1GB IBM-DTLA-307045 7200
> >rpm hard drives on it. The controller is capable of ATA100. The hard
> >drives are capable of ATA100. And yet even with CONFIG_IDEDMA_AUTO
> >set, these drives both come up running 3.39 MB/s.
>
> Interesting...
>
> You've got the PDC20267 chipset, I have two cards with the PDC20268
> chipset (Ultra TX2/100) and they both work fine - although the BIOS
> setting shows as PIO, the kernel correctly enables UDMA-100 for the
> Maxtor drives attached to them for me (CONFIG_IDEDMA_AUTO is on.)
>
> And, I have an identical IBM drive on my motherboard (VIA) controller
> and it comes up fine too, so it isn't the hard drive....
>
>
> Linux rivendell.arnor.net 2.4.14-pre6 #2 SMP Wed Oct 31 21:29:03 PST 2001
> i686 unknown
> ...
> Uniform Multi-Platform E-IDE driver Revision: 6.31
> ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
> VP_IDE: IDE controller on PCI bus 00 dev 39
> VP_IDE: chipset revision 16
> VP_IDE: not 100% native mode: will probe irqs later
> VP_IDE: VIA vt82c596b (rev 23) IDE UDMA66 controller on pci00:07.1
> ide0: BM-DMA at 0x9000-0x9007, BIOS settings: hda:DMA, hdb:pio
> ide1: BM-DMA at 0x9008-0x900f, BIOS settings: hdc:DMA, hdd:DMA
> PDC20268: IDE controller on PCI bus 00 dev 90
> PDC20268: chipset revision 2
> PDC20268: not 100% native mode: will probe irqs later
> PDC20268: (U)DMA Burst Bit ENABLED Primary MASTER Mode Secondary MASTER
> Mode.
> ide2: BM-DMA at 0xac00-0xac07, BIOS settings: hde:pio, hdf:pio
> ide3: BM-DMA at 0xac08-0xac0f, BIOS settings: hdg:pio, hdh:pio
> PDC20268: IDE controller on PCI bus 00 dev 98
> PDC20268: chipset revision 1
> PDC20268: not 100% native mode: will probe irqs later
> PDC20268: (U)DMA Burst Bit ENABLED Primary MASTER Mode Secondary MASTER
> Mode.
> ide4: BM-DMA at 0xc000-0xc007, BIOS settings: hdi:pio, hdj:pio
> ide5: BM-DMA at 0xc008-0xc00f, BIOS settings: hdk:pio, hdl:pio
> hda: IBM-DTLA-307045, ATA DISK drive
> hdc: PLEXTOR CD-R PX-W1210A, ATAPI CD/DVD-ROM drive
> hdd: TOSHIBA DVD-ROM SD-M1402, ATAPI CD/DVD-ROM drive
> hde: Maxtor 4W060H4, ATA DISK drive
> hdg: Maxtor 4W060H4, ATA DISK drive
> hdi: Maxtor 4W060H4, ATA DISK drive
> hdk: Maxtor 4W060H4, ATA DISK drive
> ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
> ide1 at 0x170-0x177,0x376 on irq 15
> ide2 at 0x9c00-0x9c07,0xa002 on irq 18
> ide3 at 0xa400-0xa407,0xa802 on irq 18
> ide4 at 0xb000-0xb007,0xb402 on irq 19
> ide5 at 0xb800-0xb807,0xbc02 on irq 19
> hda: 90069840 sectors (46116 MB) w/1916KiB Cache, CHS=5606/255/63, UDMA(66)
> hde: 117347328 sectors (60082 MB) w/2048KiB Cache, CHS=116416/16/63,
> UDMA(100)
> hdg: 117347328 sectors (60082 MB) w/2048KiB Cache, CHS=116416/16/63,
> UDMA(100)
> hdi: 117347328 sectors (60082 MB) w/2048KiB Cache, CHS=116416/16/63,
> UDMA(100)
> hdk: 117347328 sectors (60082 MB) w/2048KiB Cache, CHS=116416/16/63,
> UDMA(100)
> ...
>
> Torrey Hoffman
> -
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