How can I accurately benchmark the time it takes to load a model?

Question

I want to benchmark the time it takes to load a module (a find_by_id(234) call).

Also, how can I track the time it takes to load a page, I know I get this information when I run rails server, but this is in debug mode, I want production speed benchmarks, possible?

Answer 1

For a quick check, I would highly recommend checking out Benchmark.

An example would be:

require "benchmark"

time = Benchmark.measure do
  a.find_by_id(234)
end
puts time

However for production level benchmarking, I would check out New Relic. They offer unbelievable benchmarking on nearly everything you could think of.

They have a free developer mode here :

http://support.newrelic.com/kb/docs/developer-mode

Answer 2

You can use this gem: https://github.com/igorkasyanchuk/benchmark_methods

No more code like this:

t = Time.now
user.calculate_report
puts Time.now - t

Now you can do:

benchmark :calculate_report # in class

And just call your method

user.calculate_report