Topic: Passenger instance memory usage at 150MB+

I have an application that I am developing that consumes around 150mb as soon as the Passenger instance starts up. I am trying to figure out what (if anything) I can do to help decrease the memory footprint of this application. What factors affect memory usage? Number of gems? LOC?

Any advice on would be much appreciated!

P.S. I also have another app that uses fewer gems and is a fraction of the LOC that only takes up 40mb in memory, and a fresh app (no code, just a completely new app) takes up around 30mb on my setup, so I am assuming that the 150mb I am seeing with the app in question is not related to my server configuration.