Bonsoir,suite à fil de discussion sur hdparm, j'ai essayé plusieurs valeurs sur mon disque.
Sur la carte mère abit kt7, le chipset est detecté comme udma66 et mon disque est un udma100.
J'ai néammoins de meilleures performances en udma5 (voir ci dessous).
Quelqu'un a t il déjà essayé ce genre de réglage ?
Y a t il des risques pour le chipset (ventilé) 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
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------------disque vu par hdparm--------
root@debserv:/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) root@debserv:/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 root@debserv:/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) root@debserv:/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 ----------------------------------------