> Seek performance on the non-EBS default drive is poor -- but if I'm
> reading the bonnie++ output right, the EBS volume otherwise wasn't
> really faster - and perhaps even slower than the default drive for block
> reads and writes. Also if I read the bonnie++ output right, strangely,
> block reads seem much slower with a 7-EBS-volume RAID array than with a
> single EBS block. RAID helped the writes significantly, though.
Yeah, that's fairly odd. Is it possible that the CPU overhead of the SW
RAID is eating a lot of your available CPU?
It would also be great to run Bonnie 1.95 and look at lag times.
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