On Fri, Oct 10, 2008 at 05:50:52AM +0800, Adrian Chadd wrote:
> I've never seen IOWAIT for NFS client traffic (ie, traffic from an
> NFS client talking to an NFS server) but who knows, this is linux..

I would say this doesn't count to iowait either; see
fs/nfs/pagelist.c:nfs_wait_on_request() -- it appears to put itself
out of action without doing anything required to update iowait times
(see kernel/sched.c:io_schedule()).

I rekon Shehjar would know though... :)

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