On 18 June 2010 10:08, oizs <o...@freemail.hu> wrote: > I've seen people with the same configuration doing 160MB/s writes and > 250MB/s+ reads with raid5 so I still think something isn't right. And using > raid10 with 4 disks is a rather large waste of capacity. > > -zsozso > > > On 2010.06.18. 1:55, Chuck Swiger wrote: > >> 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, >> >> > _______________________________________________ > 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" >
what are your drives though? Are they SATA green/eco type drives or proper SAS enterprise ones _______________________________________________ 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"
