From mboxrd@z Thu Jan  1 00:00:00 1970
Message-ID: <665e7235f28fcd5f03528d7127ad72ca@plan9.escet.urjc.es>
To: 9fans@cse.psu.edu
Subject: Re: [9fans] dumb question
From: Fco.J.Ballesteros <nemo@plan9.escet.urjc.es>
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Date: Thu, 27 Jun 2002 11:36:04 +0200
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:  > The command
:  > 	tar c ... | tar x ...
:  > will have almost identical cost to any explicit recursive copy, since
:  > it does the same amount of work.  The only extra overhead is writing
:
:  it does not do the same amount of work, it runs two processes which use at
:  least two pages instead of one, it also runs all the data through some

I think the point is that if you don't notice the `extra work'
done by the tars, then you'd better forget about optimizing it
(Who cares when nobody notices it?).