Jag har kört hdparm på några servrar och fattar inte varför resultatet blir som det blir.
mathz@media:~$ sudo hdparm -Tt /dev/md1
/dev/md1:
Timing cached reads: 1732 MB in 2.00 seconds = 865.88 MB/sec
Timing buffered disk reads: 718 MB in 3.00 seconds = 239.16 MB/sec
root@cpanel [/home/mathz]# hdparm -Tt /dev/md0
/dev/md0:
Timing cached reads: 9260 MB in 2.00 seconds = 4637.01 MB/sec
Timing buffered disk reads: 504 MB in 3.02 seconds = 166.78 MB/sec
space ~ # hdparm -Tt /dev/md/0
/dev/md/0:
Timing cached reads: 2504 MB in 2.02 seconds = 1239.35 MB/sec
Timing buffered disk reads: 202 MB in 3.01 seconds = 67.04 MB/sec
sun-x2200M2:~ # hdparm -Tt /dev/sda
/dev/sda:
Timing cached reads: 4148 MB in 2.00 seconds = 2075.73 MB/sec
Timing buffered disk reads: 240 MB in 3.03 seconds = 79.33 MB/sec
lkp5# hdparm -Tt /dev/sda (Paravitual)
/dev/sda:
Timing cached reads: 2560 MB in 2.00 seconds = 1280.17 MB/sec
Timing buffered disk reads: 244 MB in 3.01 seconds = 80.93 MB/sec
lkp5# hdparm -Tt /dev/sda (BusLogic)
/dev/sda:
Timing cached reads: 2472 MB in 2.00 seconds = 1236.17 MB/sec
Timing buffered disk reads: 312 MB in 3.01 seconds = 103.93 MB/sec
nas1:~$ sudo hdparm -Tt /dev/sda
/dev/sda:
Timing cached reads: 16418 MB in 2.00 seconds = 8217.38 MB/sec
Timing buffered disk reads: 2482 MB in 3.00 seconds = 827.24 MB/sec