Poor time performance of 'rake assets:precompile'

Question

Running:

bundle exec rake assets:precompile RAILS_ENV=production

Takes about 6 minutes for 15 .js files of about 250kb total. It should no

Answer 1

Which server are you running? Is it Ubuntu, Debian, Mac? Make sure you have this in your Gemfile:

group :production do
  gem "libv8"
  gem "therubyracer", :require => 'v8'
end

See this page for more info: https://github.com/rails/rails/issues/2537

You can also try to remove unused files in your app/assets/* folders. Time is most spent on JS compilation.