Right on Tim. Thanks. I didn't know that. I'm sure it's documented
somewhere and I should have read it so double thanks for explaining it.

On Thu, Jan 17, 2013 at 4:18 PM, Timothy Coalson <tsc...@mst.edu> wrote:

> On Thu, Jan 17, 2013 at 5:33 PM, Peter Wood <peterwood...@gmail.com>wrote:
>> The 'zpool iostat -v' output is uncomfortably static. The values of
>> read/write operations and bandwidth are the same for hours and even days.
>> I'd expect at least some variations between morning and night. The load on
>> the servers is different for sure. Any input?
> Without a repetition time parameter, zpool iostat will print exactly once
> and exit, and the output is an average from kernel boot to "now", just like
> iostat, this is why it seems so static.  If you want to know the activity
> over 5 second intervals, use something like "zpool iostat -v 5" (repeat
> every 5 seconds) and wait for the second and later blocks.  The second and
> later blocks are average from previous output until "now".  I generally use
> 5 second intervals to match the 5 second commit interval on my pools.
> Tim
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