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hdparm -tT /dev/sda1

我的是:
/dev/sda1:
Timing cached reads: 2114 MB in 2.00 seconds = 1056.96 MB/sec
Timing buffered disk reads: 78 MB in 3.02 seconds = 25.81 MB/sec


是seagate 的IDE硬盘, buffered 速度只有 25.81mb,是不是有点慢?

/dev/sda1:
Timing cached reads: 1928 MB in 2.00 seconds = 963.49 MB/sec
Timing buffered disk reads: 224 MB in 3.00 seconds = 74.63 MB/sec
cuiyu@cuiyu-desktop:~$

楼上你用的是什么硬盘?
我的Timing buffered disk reads:为什么这么低?

/dev/sda1:
Timing cached reads: 2448 MB in 2.00 seconds = 1225.11 MB/sec
Timing buffered disk reads: 116 MB in 3.03 seconds = 38.33 MB/sec

/dev/sda1:
Timing cached reads: 1572 MB in 2.00 seconds = 786.10 MB/sec
Timing buffered disk reads: 214 MB in 3.02 seconds = 70.75 MB/sec

/dev/sda1:
Timing cached reads: 1564 MB in 2.00 seconds = 782.38 MB/sec
Timing buffered disk reads: 134 MB in 3.04 seconds = 44.11 MB/sec

25低了。20G 5400转的都快20m/s 了。

/dev/hda:
Timing cached reads: 878 MB in 2.00 seconds = 439.00 MB/sec
Timing buffered disk reads: 150 MB in 3.09 seconds = 48.48 MB/sec


/dev/hdb:
Timing cached reads: 626 MB in 2.00 seconds = 312.43 MB/sec
Timing buffered disk reads: 210 MB in 3.02 seconds = 69.47 MB/sec

都是Seagate的IDE，只不过hda 80G装的是Ubuntu，hdb 160G装的是XP

/dev/hda1:
Timing cached reads: 490 MB in 2.00 seconds = 244.65 MB/sec
Timing buffered disk reads: 48 MB in 3.94 seconds = 12.19 MB/sec

我这个也太慢了点吧！！！
Orz

是不是跟分区的格式有关呢？我用的是EXT3

[root@jonlubas ~]# hdparm -tT /dev/sda1

/dev/sda1:
Timing cached reads: 466 MB in 2.01 seconds = 232.39 MB/sec
Timing buffered disk reads: 78 MB in 2.40 seconds = 32.54 MB/sec



我的太低了吧。

Timing cached reads: 17644 MB in 2.00 seconds = 8823.34 MB/sec
Timing buffered disk reads: 378 MB in 3.01 seconds = 125.43 MB/sec

SAS盘 数据看起来要不错

/dev/sdb:
Timing cached reads: 17900 MB in 2.00 seconds = 8951.36 MB/sec
Timing buffered disk reads: 276 MB in 3.01 seconds = 91.74 MB/sec

第二块是 西数的 SATA 企业级