Checking 20000 files in 3 minutes means you do more than 100 stat checks per second (actually you do double that number because you stat twice for each file) many even on a server link. I think that is pretty fast.

What kind of performance were you expecting?

Update:

I ran a little test myself.

use Modern::Perl;
use Time::HiRes qw/time/;

open my $LIST, '<', 'M:/YP/list.txt' or die $!;
my @stats;

my $start = time;
while (<$LIST>) {
    chomp;
    push @stats,  stat "M:/YP/$_";
}
my $end = time;

say 'stat checks took ', $end - $start, ' seconds.';
say 'That is ', 540 / ($end - $start), ' checks per second.';

[download]
I am checking 540 existing files myself over my local network (the "M" drive is on a NAS) and got about 54 stat checks per second. So your performance is actually quite good!

CountZero

A program should be light and agile, its subroutines connected like a string of pearls. The spirit and intent of the program should be retained throughout. There should be neither too little or too much, neither needless loops nor useless variables, neither lack of structure nor overwhelming rigidity." - The Tao of Programming, 4.1 - Geoffrey James

In reply to Re: sizeDateValidator.pl is horribly slow by CountZero
in thread sizeDateValidator.pl is horribly slow by msensay

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