Hi, i'm currently making some basic tests on parsing huges files for security works, searching in them a basic regex. As the files could be more than 10 gb, i can't load it fully in memory, so i have to read it line by line. My standard test is to count the number of line and search 123456$ regexp. I need to do both : count the number of line in the file and make a search and count hte number of result. Here is my code 
open (FH, '<', "../Tests/10-million-combos.txt");
$counter=0;
$counter2=0;
while (<FH>) {
    if (/123456$/) {++$counter2;}
    ++$counter;
}
print "Num. Line : $counter - Occ : $counter2\n";
close FH;

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It's simple but for a simple file of 2 Gb it takes 12,6 min !!! I suspect i did something wrong as Perl is a fast language, but i not good enought to know what. Please help ! Thanks.

In reply to How to optimize a regex on a large file read line by line ? by John FENDER

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