Bonsoir,
suite � fil de discussion sur hdparm, j'ai essay� plusieurs valeurs sur
mon disque.
Sur la carte m�re abit kt7, le chipset est detect� comme udma66 et mon
disque est un udma100.
J'ai n�ammoins de meilleures performances en udma5 (voir ci dessous).
Quelqu'un a t il d�j� essay� ce genre de r�glage ?
Y a t il des risques pour le chipset (ventil�) ou des corruptions du fs ?
Merci,
Luc.
---------------issu de demsg----------
ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
VP_IDE: VIA vt82c686a (rev 22) IDE UDMA66 controller on pci00:07.1
ide0: BM-DMA at 0xd000-0xd007, BIOS settings: hda:DMA, hdb:pio
ide1: BM-DMA at 0xd008-0xd00f, BIOS settings: hdc:DMA, hdd:pio
hda: IC35L040AVVN07-0, ATA DISK drive
hdc: ASUS CD-S520/A, ATAPI CD/DVD-ROM drive
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
ide1 at 0x170-0x177,0x376 on irq 15
hda: 80418240 sectors (41174 MB) w/1863KiB Cache, CHS=79780/16/63
----------------------------------------
------------disque vu par hdparm--------
[EMAIL PROTECTED]:/home/luco# hdparm -i /dev/hda
/dev/hda:
Model=IC35L040AVVN07-0, FwRev=VA2OAF0C, SerialNo=VNP210B2GVAGLB
Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs }
RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=52
BuffType=DualPortCache, BuffSize=1863kB, MaxMultSect=16, MultSect=off
CurCHS=4047/16/255, CurSects=16511760, LBA=yes, LBAsects=80418240
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=yes: disabled (255) WriteCache=enabled
Drive Supports : ATA/ATAPI-5 T13 1321D revision 1 : ATA-2 ATA-3 ATA-4
ATA-5
----------------------------------------
------------mesures en lecture----------
/dev/hda:
setting using_dma to 1 (on)
setting xfermode to 68 (UltraDMA mode4)
using_dma = 1 (on)
[EMAIL PROTECTED]:/home/luco# hdparm -tT /dev/hda
/dev/hda:
Timing buffer-cache reads: 128 MB in 1.02 seconds =125.49 MB/sec
Timing buffered disk reads: 64 MB in 1.95 seconds = 32.82 MB/sec
[EMAIL PROTECTED]:/home/luco# hdparm -d1 -X69 /dev/hda
/dev/hda:
setting using_dma to 1 (on)
setting xfermode to 69 (UltraDMA mode5)
using_dma = 1 (on)
[EMAIL PROTECTED]:/home/luco# hdparm -tT /dev/hda
/dev/hda:
Timing buffer-cache reads: 128 MB in 1.03 seconds =124.27 MB/sec
Timing buffered disk reads: 64 MB in 1.68 seconds = 38.10 MB/sec
----------------------------------------
