bench.rb

require File.join(File.dirname(__FILE__), '/lib/pygments.rb')
require 'benchmark'

include Benchmark
# number of iterations
num = ARGV[0] ? ARGV[0].to_i : 10

# we can also repeat the code itself
repeats = ARGV[1] ? ARGV[1].to_i : 1

code = File.open('test/test_data.py').read.to_s * repeats

puts "Benchmarking....\n"
puts "Size: " + code.bytesize.to_s + " bytes\n"
puts "Iterations: " + num.to_s + "\n"

Benchmark.bm(40) do |x|
  x.report("pygments popen                             ")  { for i in 1..num; Pygments.highlight(code, :lexer => 'python'); end }
  x.report("pygments popen (process already started)   ")  { for i in 1..num; Pygments.highlight(code, :lexer => 'python'); end }
  x.report("pygments popen (process already started 2) ")  { for i in 1..num; Pygments.highlight(code, :lexer => 'python'); end }
end