I have two hard disks 20 gb seagate and 40 gb samsung. I see in BIOS they are
100 ATA. However when I use hdparm, i get follwing results.
[EMAIL PROTECTED] lvgandhi]# hdparm /dev/hda
/dev/hda:
multcount = 16 (on)
IO_support = 1 (32-bit)
unmaskirq = 1 (on)
using_dma = 1 (on)
keepsettings = 0 (off)
readonly = 0 (off)
readahead = 8 (on)
geometry = 2434/255/63, sectors = 39102336, start = 0
[EMAIL PROTECTED] lvgandhi]# hdparm -tT /dev/hda
/dev/hda:
Timing buffer-cache reads: 128 MB in 0.37 seconds =345.95 MB/sec
Timing buffered disk reads: 64 MB in 4.17 seconds = 15.35 MB/sec
[EMAIL PROTECTED] lvgandhi]# hdparm -i /dev/hda
/dev/hda:
Model=ST320413A, FwRev=3.39, SerialNo=6ED1JBLC
Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs RotSpdTol>.5% }
RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=0
BuffType=unknown, BuffSize=512kB, MaxMultSect=16, MultSect=16
CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=39102336
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
I have following lines in dmesg.
blk: queue c03cb420, I/O limit 4095Mb (mask 0xffffffff)
ide0: Speed warnings UDMA 3/4/5 is not functional.
blk: queue c03cb55c, I/O limit 4095Mb (mask 0xffffffff)
ide0: Speed warnings UDMA 3/4/5 is not functional.
hdparm -X 69 /dev/hda also doesn't help.
but for the same hdd, with mercury mb and 815 chipset, in mdk91, I used to get
buffered disk reads nearly 29 MB/s.
Now also in knoppix32, I get the following.
[EMAIL PROTECTED]:~# hdparm /dev/hda
/dev/hda:
multcount = 16 (on)
I/O support = 0 (default 16-bit)
unmaskirq = 0 (off)
using_dma = 1 (on)
keepsettings = 0 (off)
nowerr = 0 (off)
readonly = 0 (off)
readahead = 8 (on)
geometry = 2434/255/63, sectors = 39102336, start = 0
busstate = 1 (on)
[EMAIL PROTECTED]:~# hdparm -tT /dev/hda
/dev/hda:
Timing buffer-cache reads: 128 MB in 0.36 seconds =355.56 MB/sec
Timing buffered disk reads: 64 MB in 2.40 seconds = 26.67 MB/sec
[EMAIL PROTECTED]:~# hdparm -i /dev/hda
/dev/hda:
Model=ST320413A, FwRev=3.39, SerialNo=6ED1JBLC
Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs RotSpdTol>.5% }
RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=0
BuffType=unknown, BuffSize=512kB, MaxMultSect=16, MultSect=16
CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=39102336
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 udma0 udma1 udma2 udma3 udma4 *udma5
AdvancedPM=no WriteCache=enabled
Drive Supports : Reserved : ATA-1 ATA-2 ATA-3 ATA-4
here it is udma5 where as in mdk it is udma2 only.
I tried /etc/sysconfig/harddisks with X 69. still no use. Any help to change
udma and speed will be appreciated.
--
L.V.Gandhi
203, Soundaryalahari Apartments, Lawsons Bay colony, Visakhapatnam, 530017
MECON, 5th Floor, RTC Complex, Visakhapatnam AP 530020 INDIA
http://lvgandhi.tripod.com/
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