Using a single precompiled regex may help:

my $matchStr = join '|', map {$hash{$_}[0]} keys %hash;
my $match = qr/($matchStr)/i;

while (my $cur_line = <fh_log>) {
    #If this query contains reference to this table
    next if $cur_line !~ $match;

    #count up how many times this table is referenced.
    $table_stats{$1}++;
    $table_refs++;    #total table references (for % calc)
}

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Perl reduces RSI - it saves typing

In reply to Re: Perl Optimization by GrandFather
in thread Perl Optimization by Chivalri

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