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Article #12218

Re: Sun-4 severe NFS problem

#12218
From: Dan Franklin
Date: Tue, 25 Apr 1989 15:13
20 lines
1674 bytes
Thanks to everyone who responded.  After I sent the original message (but
before it appeared in Sun-Spots) someone here at BBN on our local Sun
mailing list suggested adjusting the buffer sizes (thanks Matt!), and that
did the trick.  Surprisingly, lowering wsize to 1024 wasn't enough; but
512 was.  So we now have the world's slowest Sun-4/110 (for I/O), but at
least it's usable.  Only wsize, not rsize, needed to be adjusted.  The
Sun-4 never had any problem receiving data.  I don't consider this to be
the conclusion of this episode--I would still like some way to achieve
reasonable NFS speeds--but it helps.

I have noticed one other anomaly: when doing a cp -r on the Sun-4 copying
files onto our Microvax, it often gets a "Permission denied" error in the
middle of copying a series of files to the same directory.  It never
chooses the same file, and it always succeeds when I run it again.  The
file in question does get created, but is only zero-length.  All the files
are mode 444, so I could understand if it never worked at all (since NFS
is stateless), but to have it fail occasionally puzzles me.  But this is
only a minor annoyance right now.

	Dan Franklin
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Message-ID: <8904031800.AA29830@rice.edu>
Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!cornell!uw-beaver!rice!sun-spots-request

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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!cornell!uw-beaver!rice!sun-spots-request
From: dan@bbn.com (Dan Franklin)
Newsgroups: comp.sys.sun
Subject: Re: Sun-4 severe NFS problem
Keywords: Networks
Message-ID: <8904031800.AA29830@rice.edu>
Date: 25 Apr 89 15:13:04 GMT
Sender: usenet@rice.edu
Organization: Sun-Spots
Lines: 20
Approved: Sun-Spots@rice.edu
Original-Date: Mon, 3 Apr 89 14:01:49 EDT
X-Sun-Spots-Digest: Volume 7, Issue 247, message 2 of 15