Hi andy,
A quick look at sysstat shows its certainly one busy baby controller. Im glad you started off this thread stating you ve outgrown your controller, thats probably the case.
Have you also outgrown your filesystem? How full are you aggregates? From what I can see there is more disk IOPS than incoming traffic, so maybe the controller
is busy shifting blocks around in order to write stripes. Can you show us a
<aggr show_space -g> for the aggregate in question.
Also, there is one server that is hogging the CPU as you can see. The big number of small files does not help as the controller has got to deal with each inode for
every request. What does this give.
<df -i> on the volume in question.
Also, how many disks in the aggr. and what type disks?
Cheers,
Eric