From: Trond Myklebust <trond.myklebust@fys.uio.no>
Subject: Re: NFS server not responding
Date: 27 Nov 2003 15:02:37 -0500
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To: Douglas Furlong <douglas.furlong@firebox.com>
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>>>>> " " == Douglas Furlong <douglas.furlong@firebox.com> writes:

     > What sort of things would be causing the client to have to
     > re-transmit so often?

UDP is not a reliable transport protocol. Packets can get dropped by
switches, and by the server itself, in which case the client's only
option is to time out and retransmit.
TCP offers reliability, but at the price of a slight protocol
overhead.

     > Client rpc stats: calls retrans authrefrsh 3431978 15968 0

     > Those retrans numbers, as a percentage of the calls, does it
     > seem appropriate?

Yep. 0.5% seems reasonable enough.

Cheers,
  Trond


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