[ltp] Thinkpad T43 cached read Speed(hdparm -T) mystery

[Tino Keitel]

On Wed, Jun 25, 2008 at 06:52:53 -0400, jqian@physics.harvard.edu wrote:

[...]

> 	2.What exactly does hdparm -T measure(processor bus speed?)?  
> Is it a good gauge for performance? If it is not a good guage for 
> performance, what is?

It reads from the kernel cache memeory, so no transfers to/from the
hard disk or over the IDE/SATA bus take place. It's more a number to
indicate the memory throughput of your hardware/kernel combo.

Regards,
Tino