Timing buffered disk reads: 64 MB in 17.99 seconds = 3.56 MB/sec 不到10M真的是太慢了
1.檢查BIOS內關於IDE SATA UDMA的設定
2.查檢查排線
3.硬碟的jump
hdparm -i /dev/sde1
/dev/sde1:
Model=WDC WD800JD-00HKA0, FwRev=13.03G13, SerialNo=WD-WMAJ91748056
Config={ HardSect NotMFM HdSw>15uSec SpinMotCtl Fixed DTR>5Mbs FmtGapReq }
RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=58
BuffType=unknown, BuffSize=8192kB, MaxMultSect=16, MultSect=off
CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=156301488
IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
PIO modes: pio0 pio3 pio4
DMA modes: mdma0 mdma1 mdma2
UDMA modes: udma0 udma1 udma2 udma3 udma4 udma5 *udma6 <--- 我的有使用並支援UDMA6,
AdvancedPM=no WriteCache=enabled
Drive conforms to: Unspecified: ATA/ATAPI-1,2,3,4,5,6
hdparm -tT /dev/sde1
/dev/sde1:
Timing cached reads: 4378 MB in 2.00 seconds = 2189.84 MB/sec
Timing buffered disk reads: 156 MB in 3.03 seconds = 51.42 MB/sec