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在Linux上硬盘的性能测试6 J5 F( I! W- m, C6 O
* f4 T! h' @0 d8 ~: J% Y8 G( T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
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# hdparm -c3 -d1 -u1 -X70 /dev/hda 2 h" J) E1 ]; a) w. j
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6 S" K" ], ]+ C1 N* C! \/ p, Rsetting 32-bit IO_support flag to 3
9 L* J9 x1 u u! H# @ lsetting unmaskirq to 1 (on)
* _, L* w' R/ H& [- I# Csetting using_dma to 1 (on)
* d- N, o q, H$ q! z# l5 OHDIO_SET_DMA failed: Operation not permitted $ _5 B6 f L( k1 B% K/ j/ Y3 W
setting xfermode to 70 (UltraDMA mode6)
9 @( V, Y' V) A3 U) J1 k1 j# J% K+ IIO_support = 3 (32-bit w/sync)
+ d' _( s7 s$ s7 ]" Cunmaskirq = 1 (on) & `$ h) B5 e( h. a% z/ d
using_dma = 0 (off)
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# hdparm -tT /dev/hda
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# b# u; S8 l- C/dev/hda: : K7 y! `2 w& b1 S3 o
Timing cached reads: 956 MB in 2.00 seconds = 477.83 MB/sec . f: A3 |' l9 f
Timing buffered disk reads: 6 MB in 3.57 seconds = 1.68 MB/sec 4 x' D, y6 ?! J
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在Windows XP上硬盘的性能测试 |
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