On Jun 17, 2010, at 4:50 PM, oizs wrote: > I've bought a Dell Perc 5/i because I couldn't make the onboard marvell > 88sx7042 work with 8.0/8.1 or current, but as lucky as I am, the best I can > do with 4x1.5tb samsung in raid5 is 60MB/s writes and 90MB/s reads, with > bbu/write-back/adaptive-read-ahead. > > I was expecting at least twice of that, and I'm not sure what can I do to get > that speed. (I've read man 7 tuning with no success)
Switch to using RAID-10 rather than RAID-5. It's normal for RAID-5 to have worse write performance than that of a single drive. Regards, -- -Chuck _______________________________________________ freebsd-current@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to "freebsd-current-unsubscr...@freebsd.org"
