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用hdparm的参数一直都是
hdparm -d1 -c3 -m16 -q /dev/hda
hdparm -d1 -c3 -m16 -q /dev/hdb
hda是maxtor金钻九代,hdb是西捷酷鱼的
在arch下测得的速度是:
[root@tayita hdb8]# hdparm -Tt /dev/hdb
/dev/hdb:
Timing cached reads: 1024 MB in 2.00 seconds = 511.82 MB/sec
Timing buffered disk reads: 72 MB in 3.02 seconds = 23.84 MB/sec
[root@tayita hdb8]# hdparm -Tt /dev/hda
/dev/hda:
Timing cached reads: 1008 MB in 2.00 seconds = 503.32 MB/sec
Timing buffered disk reads: 70 MB in 3.02 seconds = 23.16 MB/sec
但是以前在rh9,和现在的slackware10下用hdparm相同参数打开的DMA 测得的数据,却是在arch下测得的大致2倍左右,
我看大家的帖测得的也是1000MB/sec 50MB/sec左右
所以,不知道为什么在arch下却是这样呢? |
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