Salve, ho installato una debian su un pc con processore Sempron3000 hd 40Gb 512Mb ram ddr2. ho riscontrato però una lentezza incredibile, quando un programma tenta di accedere al disco perfino il mouse comincia ad andare a scatti.
questo è l'output di hdparm -I /dev/hda
codice:
/dev/hda:
ATA device, with non-removable media
Model Number: SAMSUNG SP40A2H
Serial Number: 0469J1FW260177
Firmware Revision: RR100-07
Standards:
Used: ATA/ATAPI-6 T13 1410D revision 1
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: 78242976
device size with M = 1024*1024: 38204 MBytes
device size with M = 1000*1000: 40060 MBytes (40 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 = ?
Recommended acoustic management value: 128, current value: 0
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=120ns 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
SET_MAX security extension
Automatic Acoustic Management feature set
* Mandatory FLUSH_CACHE
* SMART error logging
* SMART self-test
Security:
supported
not enabled
not locked
not frozen
not expired: security count
supported: enhanced erase
48min for SECURITY ERASE UNIT. 48min for ENHANCED SECURITY ERASE UNIT.
HW reset results:
CBLID- above Vih
Device num = 0 determined by the jumper
Checksum: correct
mentre questo è l'output di hdparm -d /dev/hda
codice:
/dev/hda:
using_dma = 0 (off)
provando ad abilitare il dma
codice:
calimero:/home/matteo# hdparm -d1 -X udma4 /dev/hda
/dev/hda:
setting using_dma to 1 (on)
HDIO_SET_DMA failed: Operation not permitted
setting xfermode to 68 (UltraDMA mode4)
using_dma = 0 (off)
oppure così
codice:
calimero:/home/matteo# hdparm -d1 /dev/hda
/dev/hda:
setting using_dma to 1 (on)
HDIO_SET_DMA failed: Operation not permitted
using_dma = 0 (off)
ottengo lo stesso risultato (non si riesce ad abilitare...)