Compare Process vs Thread creation / deletion time

processes_vs_threads.rb

# gem install benchmark-ips
require 'benchmark/ips'

Benchmark.ips do |x|
  x.warmup = 0

  x.report("threads") do
    thread = Thread.new { puts 'thread' }
    thread.join
  end

  x.report("processes") do |times|
    fork { puts 'process' }
    Process.wait
  end

  x.compare!
end

# Warming up --------------------------------------
#              threads     1.000  i/100ms
#            processes     1.000  i/100ms
# Calculating -------------------------------------
#      32.951k (±22.7%) i/s -    125.769k in   4.857991s
#     244.113  (± 9.8%) i/s -      1.207k in   4.997751s

# Comparison:
#              threads:    32950.7 i/s
#            processes:      244.1 i/s - 134.98x  slower