On Mon, Jul 16, 2007 at 07:41:23PM -0400, James Hubbard wrote:
> Dell M65 laptop with no devices connected.
>
> Using 2.6.20-1.2962, my hard drive shows up as sda with buffered disk
> read of ~49MB/sec. Under the .22 kernel it shows up as hda and the
> buffered read is < 2MB/sec. (This cause the boot to be very slow.)
This is really odd.
I have the same laptop, and it consistently pulls 33MB/s under F7's .22
kernel, and from memory, it was the same result under F6's .20
I don't recall it ever getting near the speeds you mention.
Under F7 it's using ata_piix. What driver is yours using,
and can you paste the output of hdparm -i for that device ?
I have the 7200 RPM drive, if I'm not mistaken. Bios version A07.
2.6.20 :
hdparm -i /dev/sda
/dev/sda:
HDIO_GET_IDENTITY failed: Inappropriate ioctl for device
22:
hdparm -i /dev/hda
/dev/hda:
Model=Hitachi HTS721010G9SA00, FwRev=MCZOC10H, SerialNo=MPCZN7Y0H2G6HL
Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs }
RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=4
BuffType=DualPortCache, BuffSize=7538kB, MaxMultSect=16, MultSect=16
CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=195371568
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
AdvancedPM=yes: mode=0x80 (128) WriteCache=enabled
Drive conforms to: ATA/ATAPI-7 T13 1532D revision 1: ATA/ATAPI-2 ATA/ATAPI-3 A
TA/ATAPI-4 ATA/ATAPI-5 ATA/ATAPI-6 ATA/ATAPI-7
* signifies the current active mode
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