begin require 'ruby-prof' rescue LoadError $stderr.puts 'Specify ruby-prof as application\'s dependency in Gemfile to run benchmarks.' exit end module ActiveSupport module Testing module Performance DEFAULTS.merge!( if ARGV.include?('--benchmark') { :metrics => [:wall_time, :memory, :objects, :gc_runs, :gc_time] } else { :min_percent => 0.01, :metrics => [:process_time, :memory, :objects], :formats => [:flat, :graph_html, :call_tree, :call_stack] } end).freeze protected def run_gc GC.start end class Profiler < Performer def initialize(*args) super @supported = @metric.measure_mode rescue false end def run return unless @supported RubyProf.measure_mode = @metric.measure_mode RubyProf.start RubyProf.pause full_profile_options[:runs].to_i.times { run_test(@metric, :profile) } @data = RubyProf.stop @total = @data.threads.sum(0) { |thread| thread.methods.max.total_time } end def record return unless @supported klasses = full_profile_options[:formats].map { |f| RubyProf.const_get("#{f.to_s.camelize}Printer") }.compact klasses.each do |klass| fname = output_filename(klass) FileUtils.mkdir_p(File.dirname(fname)) File.open(fname, 'wb') do |file| klass.new(@data).print(file, full_profile_options.slice(:min_percent)) end end end protected def output_filename(printer_class) suffix = case printer_class.name.demodulize when 'FlatPrinter'; 'flat.txt' when 'FlatPrinterWithLineNumbers'; 'flat_line_numbers.txt' when 'GraphPrinter'; 'graph.txt' when 'GraphHtmlPrinter'; 'graph.html' when 'GraphYamlPrinter'; 'graph.yml' when 'CallTreePrinter'; 'tree.txt' when 'CallStackPrinter'; 'stack.html' when 'DotPrinter'; 'graph.dot' else printer_class.name.sub(/Printer$/, '').underscore end "#{super()}_#{suffix}" end end module Metrics class Base def measure_mode self.class::Mode end def profile RubyProf.resume yield ensure RubyProf.pause end protected def with_gc_stats GC::Profiler.enable GC.start yield ensure GC::Profiler.disable end end class ProcessTime < Time Mode = RubyProf::PROCESS_TIME if RubyProf.const_defined?(:PROCESS_TIME) def measure RubyProf.measure_process_time end end class WallTime < Time Mode = RubyProf::WALL_TIME if RubyProf.const_defined?(:WALL_TIME) def measure RubyProf.measure_wall_time end end class CpuTime < Time Mode = RubyProf::CPU_TIME if RubyProf.const_defined?(:CPU_TIME) def initialize(*args) # FIXME: yeah my CPU is 2.33 GHz RubyProf.cpu_frequency = 2.33e9 unless RubyProf.cpu_frequency > 0 super end def measure RubyProf.measure_cpu_time end end class Memory < DigitalInformationUnit Mode = RubyProf::MEMORY if RubyProf.const_defined?(:MEMORY) # Ruby 1.9 + GCdata patch if GC.respond_to?(:malloc_allocated_size) def measure GC.malloc_allocated_size end end end class Objects < Amount Mode = RubyProf::ALLOCATIONS if RubyProf.const_defined?(:ALLOCATIONS) # Ruby 1.9 + GCdata patch if GC.respond_to?(:malloc_allocations) def measure GC.malloc_allocations end end end class GcRuns < Amount Mode = RubyProf::GC_RUNS if RubyProf.const_defined?(:GC_RUNS) def measure GC.count end end class GcTime < Time Mode = RubyProf::GC_TIME if RubyProf.const_defined?(:GC_TIME) def measure GC::Profiler.total_time end end end end end end