On Feb 23, 2010, at 1:00 AM, v wrote: > Hi experts, > I am new to zfs and ask a question regarding zfs sequential peroformance: I > read some blogs saying that netapp's WAFL can suffer "sequential read after > random write(SRARW)" performance penalty, since zfs is also doing no update > in place, can zfs has such problem?
I know of only one study of this effect, by Allan Packer and Neel using MySQL. http://www.youtube.com/watch?v=a31NhwzlAxs slides at http://blogs.sun.com/realneel/resource/MySQL_Conference_2009_ZFS_MySQL.pdf However, there is much speculation in the ZFS archives... -- richard ZFS storage and performance consulting at http://www.RichardElling.com ZFS training on deduplication, NexentaStor, and NAS performance http://nexenta-atlanta.eventbrite.com (March 16-18, 2010) _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
