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ruby--ruby/benchmark/io_pipe_rw.rb
k0kubun 433af16167 benchmark: drop all bm_ prefix for legacy driver.rb
benchmark/*.rb is only benchmarks now. We don't need prefixes.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@63928 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2018-07-10 13:08:40 +00:00

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Ruby

# Measure uncontended GVL performance via read/write with 1:1 threading
# If we switch to M:N threading, this will benchmark something else...
r, w = IO.pipe
src = '0'.freeze
dst = String.new
i = 0
while i < 1_000_000
i += 1
w.write(src)
r.read(1, dst)
end
w.close
r.close