Messages in this thread | | | Date | Sat, 20 Nov 1999 12:17:21 -0500 | From | Raul Miller <> | Subject | stressing linux |
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$ time perl -le 'for (1..80000){open FILE, ">$_" or die $!}'
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.]
-- Raul
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