Some time ago I wrote a system to collect performace statistics for my company's internal use (we have 100+ application servers - 4-6core 2xcpu hardware servers - and 1 server running the statistics). And then we released it as open-source. Our system shows not only by-service- or by-source-script- statistics, but also which services are used by a particular script. Drawback: all information is in russian.

pics: http://imgur.com/a/idFF6 https://github.com/mambaru/btp-daemon - and google-translated text https://gist.github.com/3139890

Anyone interested? Is it worth to translate it to english?