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

From: Chris Friesen (
Date: Fri Dec 07 2001 - 17:39:53 EST

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?

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

This archive was generated by hypermail 2b29 : Sat Dec 15 2001 - 21:00:13 EST