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https://github.com/mruby/mruby
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Kouhei Sutou
6bb0775d76
Here are some benchmarks:
each_char:
# /tmp/each_char.rb
a = "a" * 1000000
a.each_char do |x|
end
Without this change:
% time bin/mruby /tmp/each_char.rb
bin/mruby /tmp/each_char.rb 1.07s user 0.02s system 99% cpu 1.088 total
With this change:
% time bin/mruby /tmp/each_char.rb
bin/mruby /tmp/each_char.rb 0.52s user 0.01s system 99% cpu 0.530 total
2 times faster with this change.
codepoints:
# /tmp/codepoints.rb
a = "a" * 1000000
a.codepoints do |x|
end
Without this change:
% time bin/mruby /tmp/codepoints.rb
bin/mruby /tmp/codepoints.rb 1.16s user 0.05s system 99% cpu 1.216 total
With this change:
% time bin/mruby /tmp/codepoints.rb
bin/mruby /tmp/codepoints.rb 0.56s user 0.02s system 99% cpu 0.589 total