Re: Performance Characteristics of All Linux RAIDs (mdadm/bonnie++)

[Bryan Mesich <bryan.mesich@xxxxxxxx>]

On Wed, May 28, 2008 at 06:34:00PM +0200, Jens Bäckman wrote:

> Either the RAID 1 read speed must be wrong, or something is odd in the
> Linux implementation. There's six drives that can be used for reading
> at the same time, as they contain the very same data. 63MB/s
> sequential looks like what you would get from a single drive.

The RAID 1 read speed metrics do not depict multithreaded
processes reading from the array simutaneouly. I would suspect
that the read performance metrics would look better if 2 bonnie
simulations were ran together (for RAID 1 that is).

Bryan