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Feature #13342

open

Improve yielding block performance

Added by watson1978 (Shizuo Fujita) over 7 years ago. Updated over 5 years ago.

Status:
Open
Assignee:
-
Target version:
-
[ruby-dev:50025]

Description

The yielding block will be faster around 9%.
This patch ensures that expand to inline codes in where invoke yielding block.

Environment

  • macOS 10.12.3
  • clang 8.0.0 in Xcode 8.2

Before

                    user     system      total        real
Integer#times   0.930000   0.000000   0.930000 (  0.932125)
Array#each      0.950000   0.000000   0.950000 (  0.957962)
Array#map       1.220000   0.030000   1.250000 (  1.249174)

After

                    user     system      total        real
Integer#times   0.850000   0.000000   0.850000 (  0.853202)
Array#each      0.860000   0.010000   0.870000 (  0.865507)
Array#map       1.120000   0.020000   1.140000 (  1.149939)

Test code

require 'benchmark'

Benchmark.bmbm do |x|

  ary = (1..10000).to_a

  x.report "Integer#times" do
    20000000.times do
    end
  end

  x.report "Array#each" do
    2000.times do
      ary.each { |x| }
    end
  end

  x.report "Array#map" do
    2000.times do
      ary.map { |x| }
    end
  end

end

Patch

The patch is in https://github.com/ruby/ruby/pull/1535

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