On Fri, 11 Apr 2003, Jukka Marin wrote:

> The biggest surprise was that RAID1 is slower than the disks made me
> expect.  When the RAID is 100% busy, the disks are not, neither is the
> CPU.

Isn't that to be expected?
You are distributing disk I/O through one device to several other
devices. When that device is 100% busy, the underlying disks ought to be
(1/n)*100 % busy. Thus, if you only have one disk, it should be 100% busy,
but if you have two disks, they should only be 50% busy, both of them.

	Johnny

Johnny Billquist                  || "I'm on a bus
                                  ||  on a psychedelic trip
email: bqt@update.uu.se           ||  Reading murder books
pdp is alive!                     ||  tryin' to stay hip" - B. Idol