On Mon, 16 Jul 2012, Stefan Ring wrote:
I wouldn't expect mirrored read to be faster than single-disk read,
because the individual disks would need to read small chunks of data
with holes in-between. Regardless of the holes being read or not, the
disk will spin at the same speed.
It is normal for reads from mirrors to be faster than for a single
disk because reads can be scheduled from either disk, with different
I/Os being handled in parallel.
GraphicsMagick Maintainer, http://www.GraphicsMagick.org/
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