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发表于 2002-11-16 11:31:05
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关于硬盘读取速度的问题!!!
我的机器是PIII 1G的CPU,ST340016A的ATA/100硬盘,512M内存,在Redhat7.3下,打开DMA之前硬盘读取速度只有4M,打开DMA后:
/dev/hda:
multcount = 16 (on)
I/O support = 0 (default 16-bit)
unmaskirq = 0 (off)
using_dma = 1 (on)
keepsettings = 0 (off)
nowerr = 0 (off)
readonly = 0 (off)
readahead = 8 (on)
geometry = 4865/255/63, sectors = 78165360, start = 0
busstate = 1 (on)
测试速度:
hdparm -Tt /dev/hda
/dev/hda:
Timing buffer-cache reads: 128 MB in 0.93 seconds =137.63 MB/sec
Timing buffered disk reads: 64 MB in 1.58 seconds = 40.51 MB/sec
好像无论再改变什么参数都不能再提高硬盘的读取速度。
请问是不是这已经是最高的了?为什么不能达到100M?(不是ATA100的么?)
还有,硬盘的读取速度还取决于什么参数?是不是要改变什么CMOS里面的东西?
谢谢!!! |
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