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benchmark: new single-threaded read/write benchmark with pipe

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This is currently for testing GVL performance in the uncontended
case: IO#write and IO#read unconditionally release GVL for
blocking I/O with pipe.

It will also be interesting to see how this changes if we switch
to M:N threading model.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58556 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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normal 2017-05-04 02:13:11 +00:00
parent 140560e4ee
commit cbd34360ac
1 changed files with 13 additions and 0 deletions
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benchmark/bm_io_pipe_rw.rb Normal file
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# 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