A quicker and dirtier way is "hdparm -t /dev/hda"
At 08:49 AM 10/4/00 -0700, Bob Miller <[EMAIL PROTECTED]> wrote:
>Garl R. Grigsby wrote:
>
>> How do you measure harddrive performance?
>
>The quick and dirty way. I use dd* to stream a fixed amount of data
>off the disk and time how long it takes. Then I divide the amount of
>data by the time to get the rate.
>
>E.g.,
>
> root@jogger-egg ~# time dd if=/dev/hda of=/dev/null bs=1024k
> count=1024
> 1024+0 records in
> 1024+0 records out
> 0.010u 13.850s 0:48.14 28.7% 0+0k 0+0io 105pf+0w
> root@jogger-egg ~# bc
> 1024 / 48.14
> 21.27129206481096800997
>
>That dd command copied 1 Gb from the hard drive to the null device, in
>1024 blocks of 1 Mb each. It took 48 seconds. Dividing out shows
>that it's just over 21 Mb/sec.
>
>* Double bonus old-fart points to anybody who knows what dd stands for...
>--
> K<bob>
>[EMAIL PROTECTED], http://www.jogger-egg.com/
>
