Are you talking about this? If so, I would try MRTG::Parse to see if it's faster. I would also look at reducing the horrors of "readcfg", which contains a lot of extraneous junk (not to mention foreach loops iterating over hash keys...). Favorite lines: 
        # oops spelling error
        s/^supress/suppress/gi;

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In reply to Re: Parsing a really, REALLY big MRTG config by educated_foo
in thread Parsing a really, REALLY big MRTG config by Hercynium

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