Bonjour tout le monde,
une petite question sur le disque dur de mon portable : selon
cette page, je devrais pouvoir avoir un taux de transfert de 66.66MB/sec. Or hdparm -tT /dev/hda me donne :
/dev/hda:
Timing cached reads: 2612 MB in 2.00 seconds = 1305.55 MB/sec
Timing buffered disk reads: 90 MB in 3.09 seconds = 29.17 MB/sec
et hdparm -I /dev/hda :
/dev/hda:
ATA device, with non-removable media
Model Number: FUJITSU MHV2080AT
Serial Number: NS83T5725A6K
Firmware Revision: 00000096
Standards:
Used: ATA/ATAPI-6 T13 1410D revision 3a
Supported: 6 5 4
Configuration:
Logical max current
cylinders 16383 16383
heads 16 16
sectors/track 63 63
--
CHS current addressable sectors: 16514064
LBA user addressable sectors: 156301488
device size with M = 1024*1024: 76319 MBytes
device size with M = 1000*1000: 80026 MBytes (80 GB)
Capabilities:
LBA, IORDY(cannot be disabled)
Standby timer values: spec'd by Standard, no device specific minimum
R/W multiple sector transfer: Max = 16 Current = 16
Advanced power management level: 128 (0x80)
Recommended acoustic management value: 254, current value: 254
DMA: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 udma4 *udma5
Cycle time: min=120ns recommended=120ns
PIO: pio0 pio1 pio2 pio3 pio4
Cycle time: no flow control=240ns IORDY flow control=120ns
Commands/features:
Enabled Supported:
* SMART feature set
Security Mode feature set
* Power Management feature set
* Write cache
* Look-ahead
* Host Protected Area feature set
* WRITE_BUFFER command
* READ_BUFFER command
* DOWNLOAD_MICROCODE
* Advanced Power Management feature set
Power-Up In Standby feature set
SET_MAX security extension
* Automatic Acoustic Management feature set
* Device Configuration Overlay feature set
* Mandatory FLUSH_CACHE
* SMART error logging
* SMART self-test
* IDLE_IMMEDIATE with UNLOAD
Security:
Master password revision code = 65534
supported
not enabled
not locked
not frozen
not expired: security count
not supported: enhanced erase
80min for SECURITY ERASE UNIT.
HW reset results:
CBLID- above Vih
Device num = 0 determined by the jumper
Checksum: correct
et hdparm -id :
/dev/hda:
using_dma = 1 (on)
Model=FUJITSU MHV2080AT, FwRev=00000096, SerialNo=NS83T5725A6K
Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs }
RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=0
BuffType=DualPortCache, BuffSize=8192kB, MaxMultSect=16, MultSect=16
CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=156301488
IORDY=yes, 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-6 T13 1410D revision 3a: ATA/ATAPI-2 ATA/ATAPI-3 ATA/ATAPI-4 ATA/ATAPI-5 ATA/ATAPI-6
* signifies the current active mode
A noter que hdparm -id ne donne pas le mode UDMA5 mais hdparm -I oui...
Quelqu'un aurait-il une idée ou une explication ?
Merci bonne soirée !