Joe Little writes:
 > How did you get the average time for async writes? My client (lacking
 > ptime, its linux) comes in at 50 minutes, not 50 seconds. I'm running
 > again right now for a more accurate number. I'm untarring from a local
 > file on the directory to the NFS share.
 > 

I used dtrace to measure times (I  used the sleep time so it
gives a ballpark figure).

I untared with the tar file on the NFS share. 
Just retimed after moving the tar file to /tmp.

# ptime tar xf /tmp/linux-2.2.22.tar
ptime tar xf /tmp/linux-2.2.22.tar

real       49.630
user        1.033
sys        11.405


-r

 > 
 > On 5/11/06, Roch Bourbonnais - Performance Engineering
 > <[EMAIL PROTECTED]> wrote:
 > >
 > >
 > >   # ptime tar xf linux-2.2.22.tar
 > >   ptime tar xf linux-2.2.22.tar
 > >
 > >   real       50.292
 > >   user        1.019
 > >   sys        11.417
 > >   # ptime tar xf linux-2.2.22.tar
 > >   ptime tar xf linux-2.2.22.tar
 > >
 > >   real       56.833
 > >   user        1.056
 > >   sys        11.581
 > >   #
 > >
 > >
 > > avg time waiting for async writes is around 3ms.
 > > How much are you getting for the tar xf ?
 > >
 > > -r
 > >
 > >

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