strange performance dip shown by iozone

[Charles Swiger]

On Feb 20, 2004, at 11:47 AM, mi+mx at aldan.algebra.com wrote:
> Also, is the RAID5 writing speed supposed to be _so much_ worse, than
> that of a single disk?

it's normal for RAID-5 write performance to be slower than that of a 
bare drive.  RAID filesystems involve tradeoffs between cost, 
performance, and reliability.  RAID-5 maximizes cost and reliability at 
the expense of performance....

-- 
-Chuck