Excellent thanks to you both.  I knew of both those methods and wanted
to make sure i wasn't missing something!

On Wed, Sep 26, 2012 at 11:21 AM, Dan Swartzendruber <dswa...@druber.com>wrote:

> **
> On 9/26/2012 11:18 AM, Matt Van Mater wrote:
>  If the added device is slower, you will experience a slight drop in
>> per-op performance, however, if your working set needs another SSD,
>> overall it might improve your throughput (as the cache hit ratio will
>> increase).
>  Thanks for your fast reply!  I think I know the answer to this question,
> but what is the best way to determine how large my pool's l2arc working set
> is (i.e. how much l2arc is in use)?
> Easiest way:
> zpool iostat -v
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