rake assets:precompile taking extremely long to complete

Question

In my dev sandbox

RAILS_ENV=production rake assets:precompile

is taking over 4 minutes to complete. Is this normal. On heroku it is taking

Answer 1

I am on Rails 3.2.13 - I had the same problem with css compression taking an extremely long time. To fix:

In Gemfile add:

gem 'yui-compressor'

In config/environments/production.rb:

config.assets.css_compressor = :yui
config.assets.js_compressor = :yui

rake assets:precompile without those changes: 325 seconds

rake assets:precompile with those changes: 79 seconds

rake assets:precompile with no compression: 45 seconds