Le 20 juin 07 à 04:59, Ian Collins a écrit :
I'm not sure why, but when I was testing various configurations with bonnie++, 3 pairs of mirrors did give about 3x the random read performance of a 6 disk raidz, but with 4 pairs, the random read performance dropped by 50%: 3x2 Block read: 220464 Random read: 1520.1 4x2 Block read: 295747 Random read: 765.3 Ian _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Did you recreate the pool from scratch or did you add a pair of disk to the existing mirror ? If starting from scratch, I'm stumped. But for the later, the problem might lie in the data population. The newly added mirror might have gotten a larger share of the added data and restitution did not target all disks
evenly. -r _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
