Re: software raid issues -- possible kernel I/O problem?

Chris Friesen (chris_friesen@sympatico.ca)
Fri, 07 Dec 2001 17:39:53 -0500

A number of people have privately pointed out that hdparm -T doesn't
actually go to the disk at all. Guess I should RTFM...I though that
this was reading from the disk's cache, not linux's cache. Oops.

I'm still kind of curious why raid-1 reads don't seem to get any
performance increase over reads from a single disk. Any ideas?

Chris
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