dear debian-user,
i'm having a HECK of a time trying to get UDMA/100 transfer speeds on my
system. hdparm -t reports 35 MB/s. i've played with this for at least 4
hours now, and am coming to the realization that i definitely need help.
my system:
athlon 1.3GHz
epox 8kha mobo with VIA k266 (vt8366 + vt8233)
hda: IBM deskstar UDMA/100
from lilo.conf:
append="ide0=ata66"
from dmesg:
Kernel command line: auto BOOT_IMAGE=newlinux ro root=304 ide0=ata66
ide_setup: ide0=ata66
ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
VP_IDE: VIA vt8233 (rev 00) IDE UDMA100 controller on pci00:11.1
VP_IDE: ATA-66/100 forced bit set (WARNING)!!
ide0: BM-DMA at 0xdc00-0xdc07, BIOS settings: hda:DMA, hdb:pio
ide1: BM-DMA at 0xdc08-0xdc0f, BIOS settings: hdc:DMA, hdd:DMA
hda: IBM-DTLA-307045, ATA DISK drive
hdc: QUANTUM FIREBALLP LM30, ATA DISK drive
hdd: WDC WD205AA, ATA DISK drive
hda: 90069840 sectors (46116 MB) w/1916KiB Cache, CHS=5606/255/63, UDMA(100)
hdc: 58633344 sectors (30020 MB) w/1900KiB Cache, CHS=58168/16/63, UDMA(33)
hdd: 40079088 sectors (20520 MB) w/2048KiB Cache, CHS=39761/16/63, UDMA(33)
from hdparm /dev/hda:
multcount = 16 (on)
I/O support = 1 (32-bit)
unmaskirq = 1 (on)
using_dma = 1 (on)
keepsettings = 0 (off)
nowerr = 0 (off)
readonly = 0 (off)
readahead = 8 (on)
geometry = 5606/255/63, sectors = 90069840, start = 0
from kernel config:
CONFIG_IDE=y
CONFIG_BLK_DEV_IDE=y
CONFIG_BLK_DEV_IDEDISK=y
CONFIG_IDEDISK_MULTI_MODE=y
CONFIG_BLK_DEV_IDEPCI=y
CONFIG_IDEPCI_SHARE_IRQ=y
CONFIG_BLK_DEV_IDEDMA_PCI=y
CONFIG_BLK_DEV_ADMA=y
CONFIG_BLK_DEV_VIA82CXXX=y
CONFIG_IDEDMA_AUTO=y
CONFIG_BLK_DEV_IDE_MODES=y
hdparm -t reports 35 MB/s. this is nowhere near the 100MB/s that i'm
expecting to get. apparently, the ide0=ata66 not only doesn't give me
UDMA/100, the kernel (dmesg) actually warning me that the ata-66/100 bit is
set. should i be worried about this warning?
any suggestions or hints? is anybody getting anywhere close to 100MB/s?
pete
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