Benchmark mini_mime vs marcel

benchmark.rb

require 'marcel'
require 'memory_profiler'
require 'benchmark/ips'

puts "Memory stats for requiring mini_mime"
result = MemoryProfiler.report do
  require 'mini_mime'
end
puts "Total allocated: #{result.total_allocated_memsize} bytes (#{result.total_allocated} objects)"

puts "Memory stats for requiring marcel"
result = MemoryProfiler.report do
  require 'marcel'
end
puts "Total allocated: #{result.total_allocated_memsize} bytes (#{result.total_allocated} objects)"

Benchmark.ips do |bm|
  bm.report 'cached content_type lookup MiniMime' do
    MiniMime.lookup_by_filename("a.txt").content_type
  end

  bm.report 'content_type lookup Marcel::MimeType' do
    Marcel::MimeType.for "a.txt"
  end

  bm.compare!
end

module MiniMime
  class Db
    class RandomAccessDb
      alias_method :lookup, :lookup_uncached
    end
  end
end

Benchmark.ips do |bm|
  bm.report 'uncached content_type lookup MiniMime' do
    MiniMime.lookup_by_filename("a.txt").content_type
  end

  bm.report 'content_type lookup Marcel::MimeType' do
    Marcel::MimeType.for "a.txt"
  end
  bm.compare!
end