Re: iostat "await" like counter for measuring nfs latency

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On Tue, 2010-07-27 at 13:07 +0300, Or Gerlitz wrote:
> Doing some iscsi and nfs performance testing, I realized that iostat(1)
> doesn't support an "await" (*) like counter for measuring nfs latency.
> 
> Can tracking nfs latency be done in other means? is there a plan to
> extend the nfs iostats code to include such/similar counter?
> 
> thanks,
> 
> Or.
> 
> 
> (*) await - The average time (in milliseconds) for I/O requests issued
>     to the device to be served. This includes the time spent by the
>     requests in queue and the time spent servicing them.
> 
> 

The information is already available in /proc/self/mountstats. It is up
to iostat to start using it.

Trond
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