On Sun, Dec 17, 2006 at 11:07:27AM -0800, Ulrich Drepper wrote:
> And how often do the scripts which are in everyday use require such a 
> command?  And the same for the other programs.

I know that the rsync load is a major factor on kernel.org right now.
With all the git trees (particularly the ones that people haven't packed
recently), there's a lot of files in a lot of directories.  If
readdirplus would help this situation, it would definitely have a real
world benefit.  Obviously, I haven't done any measurements or attempted
to quantify what the improvement would be.

For those not familiar with a git repo, it has an 'objects' directory with
256 directories named 00 to ff.  Each of those directories can contain
many files (with names like '8cd5bbfb4763322837cd1f7c621f02ebe22fef') Once
a file is written, it is never modified, so all rsync needs to do is be
able to compare the timestamps and sizes and notice they haven't changed.

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