FreBSD 9.1 and ZFS v28 performances

[Bob Friesenhahn]

On Mon, 18 Mar 2013, Davide D'Amico wrote:
>> 
>> While running the tests what sort of thing are you
>> seeing from gstat, any disks maxing? If so primarily
>> read or write?
> Here the r/w pattern using zpool iostat 2:

Using 'zpool iostat 2' is not likely to be very useful since zfs 
writes all of is data in bursts and may wait up to 5 seconds to do so.

If your benchmark uses synchronous writes and does continous updates, 
then you should see zfs writing continiously to your zil device (or 
the pool).

Bob
-- 
Bob Friesenhahn
bfriesen at simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer,    http://www.GraphicsMagick.org/