[syslog-ng]syslog-ng's matching vs a perl-regex match

Hi all, I am using syslog-ng version 1.4.12 on red hat linux 7.1. I have been doing some matches to get certain events out of my logs and have certain programs react to them. I was wondering if it would be faster to pipe ALL output to a perl script and have it do its own regex matching. I'm not sure how fast syslog-ng's matching is and if I take a performance hit by using it. thanks -sv