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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
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) e( ?4 C9 `: F* K/ u3 W$ ~& r5 @# hdparm -c3 -d1 -u1 -X70 /dev/hda d) R1 S$ _( H7 K* j6 N
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/dev/hda:
+ Y; l1 B! I+ a/ g. ^ Bsetting 32-bit IO_support flag to 3
0 y# ` R' A$ H! ?% N! E8 Xsetting unmaskirq to 1 (on) & i: k# \ S R) ]0 J: {
setting using_dma to 1 (on) - U0 Y/ p* o1 [, c5 ]" V. f3 a6 w% G
HDIO_SET_DMA failed: Operation not permitted
5 m, s2 [& |; ?! I1 q, Fsetting xfermode to 70 (UltraDMA mode6) ( Z/ c% Z% E1 M P4 J* N7 C
IO_support = 3 (32-bit w/sync)
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using_dma = 0 (off)
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. u O# N; r& e V* A# hdparm -tT /dev/hda
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# [" B. \. d6 ^! K; w3 _3 Z E1 \4 f. OTiming cached reads: 956 MB in 2.00 seconds = 477.83 MB/sec + R" R4 y# Q0 S1 F& b, R3 g- ~* k8 q
Timing buffered disk reads: 6 MB in 3.57 seconds = 1.68 MB/sec
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在Windows XP上硬盘的性能测试 |
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