Nero wrote:
> With 2.5.47, I get 22mb/s using hdparm -t /dev/hda, and close to 40mb/s
> when running 2.4.x
> Is this at all expected?
> Info from hdparm:
>
> [13:19:08] root@debian:/proc# hdparm -v /dev/hda
> /dev/hda:
> multcount = 0 (off)
> IO_support = 1 (32-bit)
> unmaskirq = 1 (on)
> using_dma = 1 (on)
> keepsettings = 0 (off)
> readonly = 0 (off)
> readahead = 256 (on)
> geometry = 50765/16/63, sectors = 117231408, start = 0
>
>
> [13:18:51] root@debian:/proc# hdparm -i /dev/hda
> /dev/hda:
>
> Model=ST360021A, FwRev=3.05, SerialNo=3HR01F5W
> Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs RotSpdTol>.5% }
> RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=4
> BuffType=unknown, BuffSize=2048kB, MaxMultSect=16, MultSect=off
> CurCHS=4047/16/255, CurSects=16511760, LBA=yes, LBAsects=117231408
> IORDY=on/off, tPIO={min:240,w/IORDY:120}, tDMA={min:120,rec:120}
> PIO modes: pio0 pio1 pio2 pio3 pio4
> DMA modes: mdma0 mdma1 mdma2
> UDMA modes: udma0 udma1 udma2 udma3 udma4 *udma5
> AdvancedPM=no WriteCache=enabled
> Drive conforms to: device does not report version: 1 2 3 4 5
>
> Info from dmesg:
> ide: Assuming 33MHz system bus speed for PIO modes; override with
> idebus=xx
> VP_IDE: IDE controller at PCI slot 00:07.1
> VP_IDE: chipset revision 6
> VP_IDE: not 100% native mode: will probe irqs later
> ide: Assuming 33MHz system bus speed for PIO modes; override with
> idebus=xx
> VP_IDE: VIA vt82c686b (rev 40) IDE UDMA100 controller on pci00:07.1
> ide0: BM-DMA at 0xd000-0xd007, BIOS settings: hda:DMA, hdb:pio
> ide1: BM-DMA at 0xd008-0xd00f, BIOS settings: hdc:DMA, hdd:DMA
> hda: C/H/S=28733/16/255 from BIOS ignored
> hda: ST360021A, ATA DISK drive
> hda: DMA disabled
> ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
> hdc: RICOH CD-R/RW MP7163A, ATAPI CD/DVD-ROM drive
> hdd: CD-ROM 32X/AKU, ATAPI CD/DVD-ROM drive
> hdc: DMA disabled
> hdd: DMA disabled
> ide1 at 0x170-0x177,0x376 on irq 15
> hda: host protected area => 1
> hda: 117231408 sectors (60022 MB) w/2048KiB Cache, CHS=116301/16/63,
> UDMA(100)
> hda: hda1 < hda5 > hda2 hda3
> hdc: ATAPI 32X CD-ROM CD-R/RW drive, 2048kB Cache, DMA
>
>
> (Why does it say DMA disabled there [for hda], yet hdparm says its
> enabled? I checked that there is no init script changing settings on the
> drives.)
Forgot to mention, the filesystem is ReiserFS 3.
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This archive was generated by hypermail 2b29 : Sat Nov 23 2002 - 22:00:30 EST