> From: Roy Sigurd Karlsbakk [mailto:[email protected]] > > Please keep in mind that dedup in zfs isn't ready for production. If you still > choose to use it, you'll need massive amounts of memory+L2ARC,
Even with infinite ram, performance is still terrible without tweaking. Even with infinite ram and in-depth tweaking, using the latest available in sol11 express (which is later than what's available in OI) ... performance was merely bad, not quite terrible. On the order of 2x-8x slower than without dedup. I reserve the word "terrible" for 10x or worse degradation. I like the concept of online dedup. If the performance issues are ever resolved, it has the potential to be rock solid screamin' fast. But it seems those days are a long way off, if ever. http://mail.opensolaris.org/pipermail/zfs-discuss/2011-May/048185.html and http://mail.opensolaris.org/pipermail/zfs-discuss/2011-July/049209.html _______________________________________________ OpenIndiana-discuss mailing list [email protected] http://openindiana.org/mailman/listinfo/openindiana-discuss
