Makes one wonder if Linux is reasonably usable with 3ware. ;-)
Does anyone have any bonnie++ results for Linux software RAID 5? I know
software RAID 5 does not really lend itself to a performant software
implementation, but the results would be interesting to see, none the
less.
I don't have any hard numbers, but one of my colleagues just doesn't use
the 3Ware hardware RAID features because of the performance issues,
building his RAID 5 (or possibly RAID 6) arrays in software.
Performance screams (=fast).
Back to the filesystem discussion...
A bit far-fetched, but I wonder if the really bad (comparably) ext3
performance could be caused by an unusual interaction between the ext3
code and the 3Ware driver that happens to makes writes suck worse when
using ext3 on the 3Ware adapters... like ext3 writes ALWAYS fall into
some non-optimal driver code path.
- Dan
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