ZFS obn FreeBSD hardware model for 48 or 96 sata3 paths...
Bob Friesenhahn
bfriesen at simple.dallas.tx.us
Mon Sep 19 13:48:11 UTC 2011
On Mon, 19 Sep 2011, Peter Jeremy wrote:
>
> ZIL will only be useful if you do lots of sync writes. L2ARC won't
> help write performance. Heavy write load implies you want mirroring
L2ARC can substantially help write performance in the case where a
partial block is updated. It avoids the 'read' part of the
read/modify/write cycle. Of course it only helps if the L2ARC is much
more responsive than the main store.
Bob
--
Bob Friesenhahn
bfriesen at simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer, http://www.GraphicsMagick.org/
More information about the freebsd-fs
mailing list