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Date:      Tue, 24 Oct 2023 19:50:22 -0700
From:      Rick Macklem <rick.macklem@gmail.com>
To:        FreeBSD CURRENT <freebsd-current@freebsd.org>, Garrett Wollman <wollman@bimajority.org>
Subject:   RFC: NFS over TLS stats
Message-ID:  <CAM5tNy4=ioUd3gRqwEr5-ss7jek1N7DWc-b4_c4xWWEe-5uQyg@mail.gmail.com>

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Garrett Wollman asked me via email how a server
admin could tell what usage NFS over TLS was
happening.

I admitted that there was nothing. I have come up
with a patch that generates the following:
kern.rpctls.snd_tls_msgbytes: 21508
kern.rpctls.snd_msgbytes: 20828
kern.rpctls.snd_tls_msgcnt: 57
kern.rpctls.snd_msgcnt: 58
kern.rpctls.rcv_tls_msgbytes: 12336
kern.rpctls.rcv_msgbytes: 12072
kern.rpctls.rcv_tls_msgcnt: 57
kern.rpctls.rcv_msgcnt: 58

Basically counts of number of RPC messages
and total number of bytes those messages
result in. (Both with/without TLS.)

Does this seem reasonable or are there better
statistics that could be generated?  Obviously
any other suggestion might or might not be
practical to implement.

Thanks, rick


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