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Re: poor raid5 performance of 3ware 7500 under Linux



Alex V. Verbitsky wrote:

Hi people,

I am experiencing a poor sequental write performance with 3-disk RAID5
array on 3Ware 7500-8 - it is only 11-12 MB/s. Under Win2000 i get 30-35 MB/s
from the same array.

I have used different methods: dd, iometer and "copy /dev/zero tstfile"
- they all give me the same low figures (11-12 MB/s).


Are you using ext3 in the default journaling mode? If so try writeback journaling, or just use reiserfs.



-- There is no such thing as obsolete hardware. Merely hardware that other people don't want. (The Second Rule of Hardware Acquisition) Sam Flory <sflory rackable com>





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