Tomasz Chmielewski wrote:
If you start using your drives for two "dd if=bigfile[12] of=/dev/null" at the same time, you will notice the difference.
OT: Does this dd line really work? I did see it elsewhere already but doesn't appear to work for me: seems to see only the last if=. I don't think multiple input or output files are supported. For this kind of tests I was doing a for loop with background dd comands ( trailing & ) IIRC This would be a good dd feature to simplify linux-raid performance testing though.
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