real 26m51.912s
user 0m3.250s
sys 26m35.630s
$
While this was running, X performance sucked.
There's a variety of ways of classifying this problem. Among other
things we're classifying a compute bound process as i/o bound.
Could someone put this into their suite of stress tests?
* * * * *
By the way, for comparison purposes:
$ time rm -rf t
real 2m9.219s
user 0m0.340s
sys 2m7.510s
$
("t" was the directory where I created all those files).
And,
$ time perl -le 'use File::Basename; for (1..80000){s-\B-/-g; s/$/f/; $d= dirname $_; -d $d or mkdir $d, 0777; open FILE, ">$_" or die $!}'
real 1m29.630s
user 0m10.940s
sys 0m5.100s
$ cd ..
$ time rm -rf t
real 0m2.816s
user 0m0.450s
sys 0m2.370s
$
[Plus maybe half a minute of disk activity after a short delay, as all
those sub-directory entries were cleaned up.]
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