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Misc #10983

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Why blocks make Ruby methods 439% slower ?

Added by Sega100500 (Сергей Е) over 6 years ago. Updated over 5 years ago.

Status:
Open
Priority:
Normal
Assignee:
-
[ruby-core:<unknown>]

Description

https://www.omniref.com/ruby/2.2.0/symbols/Proc/yield#annotation=4087638&line=711&hn=1

require 'benchmark/ips'

def block_call(&block)
  block.call
end

def just_yield
  yield
end

Benchmark.ips do |x|
  x.report("call") do
    block_call { 1 + 1 }
  end

  x.report("just yield") do
    just_yield { 1 + 1 }
  end

  x.compare!
end

I run on Ruby 2.2.1

Calculating -------------------------------------
                call    40.754k i/100ms
          just yield    69.031k i/100ms
-------------------------------------------------
                call    814.929k (± 4.0%) i/s -      4.075M
          just yield      2.871M (±25.1%) i/s -     12.909M

Comparison:
          just yield:  2871127.3 i/s
                call:   814929.3 i/s - 3.52x slower
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