Ever wondered what is taking so slow on your Rails app boot time. Me too, just got in touch with a nice gem Bumbler that gathers and shows information on gems used in your app.
Its easy to install and use. Installing just like other gem:
$ gem install bumbler
And usage is also quite easy: cd to the dir of your rails app and just run:
Then in config add a command to be run twice an hour:
$ bumbler
It would show something like this:
Slow requires:
12.26 unicode
15.82 russian
17.85 rmagick
18.25 kaminari
23.23 simplecov
24.90 dalli
29.05 levenshtein-ffi
30.53 sitemap_generator
30.61 omniauth-facebook
30.99 unicorn
40.04 execjs
44.92 omniauth-twitter
49.39 uglifier
51.15 factory_girl_rails
66.91 letter_opener
74.00 nokogiri
115.41 sass-rails
160.79 haml
193.81 rails
199.38 capistrano
246.53 fog
299.53 carrierwave
299.69 cancan
In the left column is a time in milliseconds that each gem used to boot
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