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Subjecttuning disk on 3ware /performance problem



> Is there anything i can do to tune the drives connected to he 3ware
> controller ? (37MB/sec vs 43MB/sec) (and why is the seq. output block
> 65MB/sec on the 3ware vs 41MB/sec on 'ide controllers')


Try doing a real test with a 1 GB file on an empty filesystem:


# mount /fs && date
# time dd if=/dev/zero of=/fs/file1 bs=128k count=8k
# umount /fs && date && mount /fs
# time dd if=/fs/file1 of=/dev/null bs=128k


I get numbers that disagree with hdparm by a large amount.

--
Chuck
I am not a number!
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