Benchmark Ruby on Rails 5.1.2 Module Benchmark activesupport/lib/active_support/core_ext/benchmark.rb Methods M ms Class Public methods ms() Link Benchmark realtime in milliseconds. Benchmark.realtime { User.all } # => 8.0e-05 Benchmark.ms { User.all } # => 0.074 Source: show | on GitHub # File activesupport/lib/active_support/core_ext/benchmark.rb, line 11 def ms 1000 * realtime { yield } end