A very quick way to benchmark your disk performance is hdparm -t /dev/Xda (hda or sda):
you should get results like this:
root@esx-mars root]# hdparm -t /dev/sda
Timing buffered disk reads: 358 MB in 3.00 seconds = 119.33 MB/sec
This is from a Dell PowerEdge 2900 with the PERC 5i SATA RAID Controller.
Roughly you want to see 50 MB+ per disk, if you have a RAID 0 of two disks you should get 100 MB+.
What numbers are your getting?Posted in Linux Hardware,Linux Quick Tip | 5 comments