Sha256: 595b6940202220ba27cc6c37060d1126a0459eabeb93ed948b1908506fef38cd
Contents?: true
Size: 922 Bytes
Versions: 118
Compression:
Stored size: 922 Bytes
Contents
#!/usr/bin/env ruby
require "benchmark"
# This tests demonstrates throughput difference of
# IO#write and IO#write_nonblock. Note that the two
# may not be equivalent depending on your
r, w = IO.pipe
# buffer size
b = 65536
read_loop = Thread.new do
loop do
begin
r.read_nonblock(b)
rescue Errno::EWOULDBLOCK, Errno::EAGAIN => e
IO.select([r])
retry
end
end
end
n = 10_000
# 7 KB
s = "a" * (7 * 1024)
Benchmark.bm do |meter|
meter.report("write:") do
n.times { w.write(s.dup) }
end
meter.report("write + flush:") do
n.times { w.write(s.dup); w.flush }
end
meter.report("write_nonblock:") do
n.times do
s2 = s.dup
begin
while !s2.empty?
written = w.write_nonblock(s2)
s2.slice!(0, written)
end
rescue Errno::EWOULDBLOCK, Errno::EAGAIN
IO.select([], [w])
retry
end
end
end
end
Version data entries
118 entries across 118 versions & 1 rubygems