为什么内核#需要占用应用程序的大量资源?

I am trying out ruby-prof and ran it against a somewhat self-contained module. The core of the module is 3 classes, with maybe 3 other helper classes being used. So there shouldn't be a huge amount of overhead with tons of requires and incluces. Is this normal in a big(gish) app with a fair number of gems installed?I am trying out ruby-prof and ran it against a