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From: dougs@sequent.UUCP (Doug Schwartz)
Newsgroups: comp.dcom.lans,comp.unix.wizards
Subject: Re: NFS performance: a question
Summary: NFS I vs O
Keywords: NFS, performance, read/write asymmetry
Message-ID: <3190@sequent.UUCP>
Date: 2 Feb 88 18:31:32 GMT
References: <663@noao.UUCP>
Organization: Sequent Computer Systems, Beaverton, OR
Lines: 15

In article <663@noao.UUCP>, brown@noao.arizona.edu (Mike Brown) writes:
> 
> Why is the transfer rate when a process writes to a remote NFS file 3-4 times
> smaller than the transfer rate when reading a remote NFS file?

I may not be able to explain why you are getting what you are getting,
but this seems to be in line with Sun's published statistics.  From the
Summer 1985 USENIX prodeedings, page 129, "The current numbers on raw
transfer speed are: 120 kilobytes/second for read (cp bigfile /dev/null)
and 40 kilobytes/second for write."
-- 
Doug Schwartz
Sequent Computer
Beaverton, Oregon
tektronix!ogcvax!sequent!dougs