require 'jruby/profiler' require 'java' java_import java.lang.management.ManagementFactory module ActiveSupport module Testing module Performance DEFAULTS.merge!( if ARGV.include?('--benchmark') {:metrics => [:wall_time, :user_time, :memory, :gc_runs, :gc_time]} else { :metrics => [:wall_time], :formats => [:flat, :graph] } end).freeze protected def run_gc ManagementFactory.memory_mx_bean.gc end class Profiler < Performer def initialize(*args) super @supported = @metric.is_a?(Metrics::WallTime) end def run return unless @supported @total = time_with_block do @data = JRuby::Profiler.profile do full_profile_options[:runs].to_i.times { run_test(@metric, :profile) } end end end def record return unless @supported klasses = full_profile_options[:formats].map { |f| JRuby::Profiler.const_get("#{f.to_s.camelize}ProfilePrinter") }.compact klasses.each do |klass| fname = output_filename(klass) FileUtils.mkdir_p(File.dirname(fname)) file = File.open(fname, 'wb') do |file| klass.new(@data).printProfile(file) end end end protected def output_filename(printer_class) suffix = case printer_class.name.demodulize when 'FlatProfilePrinter'; 'flat.txt' when 'GraphProfilePrinter'; 'graph.txt' else printer_class.name.sub(/ProfilePrinter$/, '').underscore end "#{super()}_#{suffix}" end end module Metrics class Base def profile yield end protected def with_gc_stats ManagementFactory.memory_mx_bean.gc yield end end class WallTime < Time def measure super end end class CpuTime < Time def measure ManagementFactory.thread_mx_bean.get_current_thread_cpu_time / 1000 / 1000 / 1000.0 # seconds end end class UserTime < Time def measure ManagementFactory.thread_mx_bean.get_current_thread_user_time / 1000 / 1000 / 1000.0 # seconds end end class Memory < DigitalInformationUnit def measure ManagementFactory.memory_mx_bean.non_heap_memory_usage.used + ManagementFactory.memory_mx_bean.heap_memory_usage.used end end class GcRuns < Amount def measure ManagementFactory.garbage_collector_mx_beans.inject(0) { |total_runs, current_gc| total_runs += current_gc.collection_count } end end class GcTime < Time def measure ManagementFactory.garbage_collector_mx_beans.inject(0) { |total_time, current_gc| total_time += current_gc.collection_time } / 1000.0 # seconds end end end end end end