On Mar 22, 2010, at 11:33 AM, Bill Sommerfeld wrote: > On 03/22/10 11:02, Richard Elling wrote: >> Scrub tends to be a random workload dominated by IOPS, not bandwidth. > > you may want to look at this again post build 128; the addition of > metadata prefetch to scrub/resilver in that build appears to have > dramatically changed how it performs (largely for the better).
Yes, it is better. But still nowhere near platter speed. All it takes is one little seek... -- richard ZFS storage and performance consulting at http://www.RichardElling.com ZFS training on deduplication, NexentaStor, and NAS performance Las Vegas, April 29-30, 2010 http://nexenta-vegas.eventbrite.com _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
