In Rails, why "action_controller/benchmarking.rb" is running?

Question

While checking why a page is loading fairly slowly, I saw that

/vendor/rails/actionpack/lib/action_controller/benchmarking.rb

is being run. Why is it running (is it something in the config file? or is it something standard in development mode?)

Won't it cause a page to load extra slow? Is there a way to turn it off? (using Rails 2.2.2)

Answer 1

Benchmarking is on by default in all environments. It's only doing quick basic time calculations for output into the logs.

2.2.2 is very old, I strong recommend upgrading to at least the last versions of 2.3.

It is unlikely that the built in benchmarking is slowing the page down. What else do the logs say? Are you in some way unhappy with 10ms response times?