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giulianoz
19th January 2010, 04:34 PM
Hello,
I'm having problems with slow data transfer from my sata dvd rom to my sata hard disk. some output:



sudo hdparm -i /dev/sr0

/dev/sr0:

Model=HL-DT-ST, FwRev=NL01, SerialNo=K2M99HC1526
Config={ Fixed Removeable DTR<=5Mbs DTR>10Mbs nonMagnetic }
RawCHS=0/0/0, TrkSize=0, SectSize=0, ECCbytes=0
BuffType=unknown, BuffSize=unknown, MaxMultSect=0
(maybe): CurCHS=0/0/0, CurSects=0, LBA=yes, LBAsects=0
IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
PIO modes: pio0 pio3 pio4
DMA modes: mdma0 mdma1 mdma2
UDMA modes: udma0 udma1 udma2 udma3 udma4 *udma5
AdvancedPM=no
Drive conforms to: unknown: ATA/ATAPI-3,4,5,6,7

* signifies the current active mode




sudo hdparm -tT /dev/sr0 --> data dvd

/dev/sr0:
Timing cached reads: 4576 MB in 2.00 seconds = 2289.13 MB/sec
Timing buffered disk reads: 18 MB in 3.28 seconds = 5.49 MB/sec

sudo hdparm -tT /dev/sr0 --> dvd video with libdvdcss

/dev/sr0:
Timing cached reads: 3838 MB in 2.00 seconds = 1920.01 MB/sec
Timing buffered disk reads: 8 MB in 3.14 seconds = 2.55 MB/sec





sudo hdparm -i /dev/sda

/dev/sda:

Model=ST31000333AS, FwRev=SD35, SerialNo=9TE16JHH
Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs RotSpdTol>.5% }
RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=4
BuffType=unknown, BuffSize=unknown, MaxMultSect=16, MultSect=1
CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=1953525168
IORDY=on/off, tPIO={min:120,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 *udma6
AdvancedPM=no WriteCache=enabled
Drive conforms to: unknown: ATA/ATAPI-4,5,6,7

* signifies the current active mode




sudo hdparm -tT /dev/sda

/dev/sda:
Timing cached reads: 6134 MB in 2.00 seconds = 3069.80 MB/sec
Timing buffered disk reads: 354 MB in 3.02 seconds = 117.34 MB/sec




cpu specs:
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 15
model name : Intel(R) Core(TM)2 CPU 6600 @ 2.40GHz

processor : 1
vendor_id : GenuineIntel
cpu family : 6
model : 15
model name : Intel(R) Core(TM)2 CPU 6600 @ 2.40GHz


transfer speed in is between 2-5 MB/sec (dvd video) and 8-13 MB/sec (data dvd).

Is that normal ? I can burn a dvd at 16x without problems (more than 20MB/sec)

TIA

giuliano