Why localhost crashed in Rails 3.1

Question

I noticed an incredibly slow page load time using the resource pipeline in Rails 3.1. Each asset (css / js / image) takes from half a second to a second to load. It really impedes development. I do not have the same problems in production.

Is there any solution? The log file below shows how each individual asset loads in 0.5 - 0.3 seconds:

# load of page itself...
...
Completed 200 OK in 1231ms (Views: 933.0ms | ActiveRecord: 15.6ms)


Started GET "/assets/blueprint/screen.css?body=1" for 127.0.0.1 at 2012-01-15 15:53:00 +0000
Served asset /blueprint/screen.css - 304 Not Modified (0ms)


Started GET "/assets/application.css?body=1" for 127.0.0.1 at 2012-01-15 15:53:00 +0000
Served asset /application.css - 304 Not Modified (0ms)


Started GET "/assets/blueprint/print.css?body=1" for 127.0.0.1 at 2012-01-15 15:53:00 +0000
Served asset /blueprint/print.css - 304 Not Modified (0ms)


Started GET "/assets/universal/application.js?body=1" for 127.0.0.1 at 2012-01-15 15:53:01 +0000
Served asset /universal/application.js - 304 Not Modified (2ms)


Started GET "/assets/universal/animate-color.js?body=1" for 127.0.0.1 at 2012-01-15 15:53:01 +0000
Served asset /universal/animate-color.js - 304 Not Modified (0ms)


Started GET "/assets/universal/animate-shadow.js?body=1" for 127.0.0.1 at 2012-01-15 15:53:02 +0000
Served asset /universal/animate-shadow.js - 304 Not Modified (0ms)


Started GET "/assets/jquery_ujs.js?body=1" for 127.0.0.1 at 2012-01-15 15:53:02 +0000
Served asset /jquery_ujs.js - 304 Not Modified (0ms)


Started GET "/assets/universal/jquery.placehold.js?body=1" for 127.0.0.1 at 2012-01-15 15:53:02 +0000
Served asset /universal/jquery.placehold.js - 304 Not Modified (0ms)


Started GET "/assets/universal/autoresize.js?body=1" for 127.0.0.1 at 2012-01-15 15:53:03 +0000
Served asset /universal/autoresize.js - 304 Not Modified (0ms)


Started GET "/assets/universal/utilities.js?body=1" for 127.0.0.1 at 2012-01-15 15:53:03 +0000
Served asset /universal/utilities.js - 304 Not Modified (0ms)


Started GET "/assets/universal/validators.js?body=1" for 127.0.0.1 at 2012-01-15 15:53:03 +0000
Served asset /universal/validators.js - 304 Not Modified (0ms)


Started GET "/assets/jquery.js?body=1" for 127.0.0.1 at 2012-01-15 15:53:04 +0000
Served asset /jquery.js - 304 Not Modified (0ms)


Started GET "/assets/whitelabel/pingpanel/pingpanel.css?body=1" for 127.0.0.1 at 2012-01-15 15:53:04 +0000
Served asset /whitelabel/pingpanel/pingpanel.css - 304 Not Modified (0ms)


Started GET "/assets/logo.png" for 127.0.0.1 at 2012-01-15 15:53:05 +0000
Served asset /logo.png - 304 Not Modified (0ms)


Started GET "/assets/application_bar_background.png" for 127.0.0.1 at 2012-01-15 15:53:05 +0000
Served asset /application_bar_background.png - 304 Not Modified (0ms)


Started GET "/assets/linen-new.jpg" for 127.0.0.1 at 2012-01-15 15:53:06 +0000
Served asset /linen-new.jpg - 304 Not Modified (0ms)

The slowdown effect may be more noticeable in the chrome network analyzer:

Answer 1

, , Rails env, Rails . , .

rails-dev-tweaks gem, , Rails . .

Answer 2

rails-dev-tweaks, Sprockets . .

development.rb :

config.assets.debug = false

dev, , .

, debug = 1 URL, Sprockets .