hdparm でディスクのチューニング

とりあえずいろいろやってみる。
-X66 を記述してもしなくても同じだったので、とりあえず指定しないようにした。
http://pc.2ch.net/test/read.cgi/linux/1002445806/158 として投稿。

VP_IDE: VIA vt82c586b (rev 41) IDE UDMA33 controller on pci00:07.1
ide0: BM-DMA at 0xe000-0xe007, BIOS settings: hda:DMA, hdb:DMA
hda: ST38410A, ATA DISK drive
hda: 16841664 sectors (8623 MB) w/512KiB Cache, CHS=16708/16/63, UDMA(33)

# hdparm -i /dev/hda
/dev/hda:
Model=ST38410A, FwRev=3.03, SerialNo=6CS1JE84
Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs RotSpdTol>.5% }
RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=4
BuffType=unknown, BuffSize=512kB, MaxMultSect=32, MultSect=16
CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=16841664
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
AdvancedPM=yes: unknown setting WriteCache=enabled
Drive Supports : Reserved : ATA-1 ATA-2 ATA-3 ATA-4 ATA-5

# hdparm -m16 -c1 -u1 -d1 -tT /dev/hda
/dev/hda:
setting 32-bit I/O support flag to 1
setting multcount to 16
setting unmaskirq to 1 (on)
setting using_dma to 1 (on)
multcount = 16 (on)
I/O support = 1 (32-bit)
unmaskirq = 1 (on)
using_dma = 1 (on)
Timing buffer-cache reads: 128 MB in 3.13 seconds = 40.89 MB/sec
Timing buffered disk reads: 64 MB in 5.31 seconds = 12.05 MB/sec