Precompiling assets on a rails server is way slow. Especially if your dealing with small and micro EC2 instances.
Normally, I would precompile the assets during a
cap deploy ... maybe precompiling them conditionally if there were not any changes to the assets.
I've been experimenting with a much faster way of doing this where the assets are precompiled locally and then rsynced to my web servers. I mean, I've got this powerful Macbook, why not use it?
Also, I was able get even more speed by using the turbo sprockets gem. It keeps a manifest of what's already been compiled and only compiles new things. A big performance boost.