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#!/usr/bin/env ruby
# encoding: utf-8
# frozen_string_literal: true
$LOAD_PATH << File.expand_path(File.join(File.dirname(__FILE__), "..", "lib"))
require "amq/protocol/client"
require "benchmark/ips"
puts
puts "-" * 80
puts "Pack/Unpack Micro-benchmarks on #{RUBY_DESCRIPTION}"
puts "-" * 80
# Test data
UINT64_VALUE = 0x123456789ABCDEF0
UINT32_VALUE = 0x12345678
UINT16_VALUE = 0x1234
PACKED_UINT64_BE = (+"\x12\x34\x56\x78\x9A\xBC\xDE\xF0").force_encoding('BINARY').freeze
PACKED_UINT32_BE = (+"\x12\x34\x56\x78").force_encoding('BINARY').freeze
PACKED_UINT16_BE = (+"\x12\x34").force_encoding('BINARY').freeze
puts "=== Pack Operations ==="
Benchmark.ips do |x|
x.config(time: 5, warmup: 2)
x.report("AMQ::Pack.pack_uint64_big_endian") do
AMQ::Pack.pack_uint64_big_endian(UINT64_VALUE)
end
# Alternative: direct pack with 'Q>' directive (Ruby 1.9.3+)
x.report("[val].pack('Q>')") do
[UINT64_VALUE].pack('Q>')
end
x.report("[val].pack('N') uint32") do
[UINT32_VALUE].pack('N')
end
x.report("[val].pack('n') uint16") do
[UINT16_VALUE].pack('n')
end
x.compare!
end
puts
puts "=== Unpack Operations ==="
Benchmark.ips do |x|
x.config(time: 5, warmup: 2)
x.report("AMQ::Pack.unpack_uint64_big_endian") do
AMQ::Pack.unpack_uint64_big_endian(PACKED_UINT64_BE)
end
# Alternative: direct unpack with 'Q>' directive
x.report("data.unpack('Q>')") do
PACKED_UINT64_BE.unpack('Q>')
end
x.report("data.unpack1('Q>')") do
PACKED_UINT64_BE.unpack1('Q>')
end
x.report("data.unpack('N').first") do
PACKED_UINT32_BE.unpack('N').first
end
x.report("data.unpack1('N')") do
PACKED_UINT32_BE.unpack1('N')
end
x.compare!
end
puts
puts "=== String Slicing ==="
DATA = ("x" * 1000).force_encoding('BINARY').freeze
Benchmark.ips do |x|
x.config(time: 5, warmup: 2)
x.report("data[offset, length]") do
DATA[100, 50]
end
x.report("data.byteslice(offset, length)") do
DATA.byteslice(100, 50)
end
x.report("data.slice(offset, length)") do
DATA.slice(100, 50)
end
x.compare!
end
puts
puts "=== Single Byte Access ==="
Benchmark.ips do |x|
x.config(time: 5, warmup: 2)
x.report("data[0, 1].unpack('C').first") do
DATA[0, 1].unpack('C').first
end
x.report("data.getbyte(0)") do
DATA.getbyte(0)
end
x.report("data[0].ord") do
DATA[0].ord
end
x.report("data.unpack1('C')") do
DATA.unpack1('C')
end
x.compare!
end
puts
puts "=== Buffer Building ==="
Benchmark.ips do |x|
x.config(time: 5, warmup: 2)
x.report("String.new + <<") do
buf = String.new
buf << "hello"
buf << "world"
buf << [1234].pack('N')
buf
end
x.report("+'' + <<") do
buf = +''
buf << "hello"
buf << "world"
buf << [1234].pack('N')
buf
end
x.report("Array#join") do
parts = []
parts << "hello"
parts << "world"
parts << [1234].pack('N')
parts.join
end
x.compare!
end
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