Replacing for with while would save memory at no cost.

Update: Oops, not quite true. It would involve copying $1 into some other variable, so it might lose speed. 

while ( $content =~ /^(Server error:\n.*?)^server info/gsm ) {
    my $record = $1;
    print $record if $record =~ /Btree/;
}

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In reply to Re^2: Newbie : Data mining question by ikegami
in thread Newbie : Data mining question by kri54sub

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