[Nottingham] Calculating the overhead of "tar"

Robert Hart enxrah at nottingham.ac.uk
Sun Dec 12 15:06:23 GMT 2004


I don't know how much data you are sending, but this:

tar cf /dev/null --totals ~

seems to run pretty fast on my system even for very large archives.

On Sun, 2004-12-12 at 15:02 +0000, Martin wrote:
> Mike Cardwell wrote:
> > I have an obscure question, and this is the most appropriate list I read
> [---]
> > I am confident that there is a method for calculating what the filesize 
> > of a tarball will be, by simply knowing the filenames, filesizes, and 
> [---]
> 
> Either take a few examples and /try/ it to see for yourself 
> (experiment), or look at the source.
> 
> A quick fix would be to just add say 5% or 10% and make the user very 
> happy when it finishes slightly faster than expected!
> 
> A Google search might find some docs...
> 
> Good luck,
> Martin
> 
> 
-- 
Robert Hart <enxrah at nottingham.ac.uk>
University of Nottingham


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