Erik Stian Tefre wrote: > Results from bonnie++ with default settings on my box (7.0-RELEASE, > amd64, 480 MB system memory, BBU, write cache enabled, 7 drive raid-5, > storsave = balance, NCQ on): > > Version 1.93d ------Sequential Output------ --Sequential Input- > --Random- > Concurrency 1 -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- > --Seeks-- > Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP > /sec %CP > xxxxxxxxxxxxxxxx 1G 275 83 72440 23 24990 6 644 83 76548 15 > 460.6 6
Was the array busy when you did the test? 72-76 MB MB/s is very slow for a 7-drive array in RAID-5. FreeBSD's disk IO can be sluggish but I doubt it would get that slow. On a RAID10 array with 6 drives I can get ~~ 200 MB/s in both directions (though on a different controller). RAID5 is basically striped so your setup should on average yield close to 6 times the single drive performance, something in the area of 350 MB/s.
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