Imagemagick (rmagick) benchmark

gistfile1.rb

# Need to install imagemagick first.
# sudo apt-get install libmagickwand on ubuntu.
# Available on homebrew as well.

require "RMagick"

images = Dir["./*.png"]

start_time = Time.now

iterations = 0
100.times do
  # Load the image into rmagick
  images.each do |path|
    iterations += 1
    image = Magick::Image.read(path).first
    image.resize_to_fill!(66, 35)
    # Ruby GC doesn't necessarily interact well with big binary blogs. Destroy explicitly.
    image.destroy!
  end
end

elapsed = Time.now - start_time

puts "Avg. #{(elapsed.to_f * 1000.0 / iterations).round(2)} ms / conversion"