ruby--ruby/benchmark/bm_io_pipe_rw.rb

# 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
benchmark: new single-threaded read/write benchmark with pipe 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 2017-05-03 22:13:11 -04:00			`# 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`