On Wed, Jan 23, 2013 at 12:22 PM, Wojciech Puchar <woj...@wojtek.tensor.gdynia.pl> wrote: >>> While RAID-Z is already a king of bad performance, >> >> >> I don't believe RAID-Z is any worse than RAID5. Do you have any actual >> measurements to back up your claim? > > > it is clearly described even in ZFS papers. Both on reads and writes it > gives single drive random I/O performance.
For reads - true. For writes it's probably behaves better than RAID5 as it does not have to go through read-modify-write for partial block updates. Search for RAID-5 write hole. If you need higher performance, build your pool out of multiple RAID-Z vdevs. _______________________________________________ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "freebsd-hackers-unsubscr...@freebsd.org"
