Profile with freeze

profile_with_freeze.rb

require 'memory_profiler'
require 'active_support/core_ext/string'

def translate_using_freeze(key)
  if key.to_s.first == '.'.freeze
    "products/index".tr('/'.freeze, '.'.freeze)
  end
end

report = MemoryProfiler.report(ignore_files: 'active_support/core_ext/string') do
  30.times { translate_using_freeze('.name') }
end

report.pretty_print

# allocated memory by file
# -----------------------------------
#      3600  benchmark_with_freeze.rb


# allocated objects by file
# -----------------------------------
#        90  benchmark_with_freeze.rb


# Allocated String Report
# -----------------------------------
#         30  ".name"
#         30  benchmark_with_freeze.rb:11
#
#         30  "products.index"
#         30  benchmark_with_freeze.rb:6
#
#         30  "products/index"
#         30  benchmark_with_freeze.rb:6