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在Linux上硬盘的性能测试
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硬盘无法打开 using_dma 选项,在Linux上硬盘的性能和这个关系比较大 : Q- v6 R3 b; I( ^; E* @
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# hdparm -c3 -d1 -u1 -X70 /dev/hda 5 ^. R/ g& P" g1 u+ g8 h" P& |
, k8 w# {) w; V8 h; `2 |9 w' q/dev/hda:
+ E, j' j8 Z0 X2 {. y$ C/ \. esetting 32-bit IO_support flag to 3 5 x, g4 X& l. y& C* V
setting unmaskirq to 1 (on)
N9 t9 ?2 c* }: Csetting using_dma to 1 (on) % W& r% ~- ~; v, }: i
HDIO_SET_DMA failed: Operation not permitted
, u" b8 D$ {( X( Y3 ^% {' X" Csetting xfermode to 70 (UltraDMA mode6) + W7 ~0 s$ p1 e ^
IO_support = 3 (32-bit w/sync) # i d1 c* J0 v9 B+ w: i# n/ p
unmaskirq = 1 (on)
& ~, r" t; l: {3 i5 P/ m1 y) Q- xusing_dma = 0 (off)
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* S y, z" h- \7 g6 d0 V4 L3 x# hdparm -tT /dev/hda , C- C% X& N2 z1 _% W
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/dev/hda:
0 ]9 R& P6 g# j% {0 o/ f0 ~+ nTiming cached reads: 956 MB in 2.00 seconds = 477.83 MB/sec
# b+ r! a' U' X* M4 ETiming buffered disk reads: 6 MB in 3.57 seconds = 1.68 MB/sec - G+ N1 Q+ ]& [3 r
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. L1 k3 W9 e/ N: h9 c$ {在Windows XP上硬盘的性能测试 |
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