How do you check disk speed ?

[dandan123]

I remember there is a command where you can see the rotational speed of a disk but I can't seem to remember it.

Anyone know ?

 

[Mike042]

I cannot think of a command to do this, but you could try the following:
iostat -E # note the Product: <string>

'Google search' for the <string> and find the rotational speed from the hardware description on the manufacturers/sellers website.

I hope that helps.

Mike

 

[dandan123]

Mike, that's what I did, but I do remember a command which did this and I'm not able to remember now

 

[Annihilannic]

Have you tried unmounting your brain and running an fsck? You might have to drop to single-thought mode to do that...

Annihilannic.

 

[elgrandeperro]

Format uses /etc/format.dat for tuning purposes which sometimes lists the rpm for a particular "type" of disk.

I think this was mostly to figure out the layout for optimal rotational delay, so I don't think it necessarily needs to match the actual drive.

eugene