require 'rubygems' gem 'ruby-prof', '>= 0.6.1' require 'ruby-prof' require 'fileutils' require 'rails/version' module ActiveSupport module Testing module Performance DEFAULTS = if benchmark = ARGV.include?('--benchmark') # HAX for rake test { :benchmark => true, :runs => 4, :metrics => [:process_time, :memory, :objects, :gc_runs, :gc_time], :output => 'tmp/performance' } else { :benchmark => false, :runs => 1, :min_percent => 0.02, :metrics => [:process_time, :memory, :objects], :formats => [:flat, :graph_html, :call_tree], :output => 'tmp/performance' } end def self.included(base) base.class_inheritable_hash :profile_options base.profile_options = DEFAULTS.dup end def full_test_name "#{self.class.name}##{method_name}" end def run(result) return if method_name =~ /^default_test$/ yield(self.class::STARTED, name) @_result = result run_warmup profile_options[:metrics].each do |metric_name| if klass = Metrics[metric_name.to_sym] run_profile(klass.new) result.add_run else $stderr.puts '%20s: unsupported' % metric_name.to_s end end yield(self.class::FINISHED, name) end def run_test(metric, mode) run_callbacks :setup setup metric.send(mode) { __send__ @method_name } rescue ::Test::Unit::AssertionFailedError => e add_failure(e.message, e.backtrace) rescue StandardError, ScriptError add_error($!) ensure begin teardown run_callbacks :teardown, :enumerator => :reverse_each rescue ::Test::Unit::AssertionFailedError => e add_failure(e.message, e.backtrace) rescue StandardError, ScriptError add_error($!) end end protected def run_warmup GC.start time = Metrics::Time.new run_test(time, :benchmark) puts "%s (%s warmup)" % [full_test_name, time.format(time.total)] GC.start end def run_profile(metric) klass = profile_options[:benchmark] ? Benchmarker : Profiler performer = klass.new(self, metric) performer.run puts performer.report performer.record end class Performer delegate :run_test, :profile_options, :full_test_name, :to => :@harness def initialize(harness, metric) @harness, @metric = harness, metric end def report rate = @total / profile_options[:runs] '%20s: %s' % [@metric.name, @metric.format(rate)] end protected def output_filename "#{profile_options[:output]}/#{full_test_name}_#{@metric.name}" end end class Benchmarker < Performer def run profile_options[:runs].to_i.times { run_test(@metric, :benchmark) } @total = @metric.total end def record avg = @metric.total / profile_options[:runs].to_i now = Time.now.utc.xmlschema with_output_file do |file| file.puts "#{avg},#{now},#{environment}" end end def environment unless defined? @env app = "#{$1}.#{$2}" if `git branch -v` =~ /^\* (\S+)\s+(\S+)/ rails = Rails::VERSION::STRING if File.directory?('vendor/rails/.git') Dir.chdir('vendor/rails') do rails += ".#{$1}.#{$2}" if `git branch -v` =~ /^\* (\S+)\s+(\S+)/ end end ruby = defined?(RUBY_ENGINE) ? RUBY_ENGINE : 'ruby' ruby += "-#{RUBY_VERSION}.#{RUBY_PATCHLEVEL}" @env = [app, rails, ruby, RUBY_PLATFORM] * ',' end @env end protected HEADER = 'measurement,created_at,app,rails,ruby,platform' def with_output_file fname = output_filename if new = !File.exist?(fname) FileUtils.mkdir_p(File.dirname(fname)) end File.open(fname, 'ab') do |file| file.puts(HEADER) if new yield file end end def output_filename "#{super}.csv" end end class Profiler < Performer def run RubyProf.measure_mode = @metric.measure_mode RubyProf.start RubyProf.pause profile_options[:runs].to_i.times { run_test(@metric, :profile) } @data = RubyProf.stop @total = @data.threads.values.sum(0) { |method_infos| method_infos.sort.last.total_time } end def record klasses = profile_options[:formats].map { |f| RubyProf.const_get("#{f.to_s.camelize}Printer") }.compact klasses.each do |klass| fname = output_filename(klass) FileUtils.mkdir_p(File.dirname(fname)) File.open(fname, 'wb') do |file| klass.new(@data).print(file, profile_options.slice(:min_percent)) end end end protected def output_filename(printer_class) suffix = case printer_class.name.demodulize when 'FlatPrinter'; 'flat.txt' when 'GraphPrinter'; 'graph.txt' when 'GraphHtmlPrinter'; 'graph.html' when 'CallTreePrinter'; 'tree.txt' else printer_class.name.sub(/Printer$/, '').underscore end "#{super()}_#{suffix}" end end module Metrics def self.[](name) klass = const_get(name.to_s.camelize) klass if klass::Mode rescue NameError nil end class Base attr_reader :total def initialize @total = 0 end def name @name ||= self.class.name.demodulize.underscore end def measure_mode self.class::Mode end def measure 0 end def benchmark with_gc_stats do before = measure yield @total += (measure - before) end end def profile RubyProf.resume yield ensure RubyProf.pause end protected if GC.respond_to?(:enable_stats) def with_gc_stats GC.enable_stats yield ensure GC.disable_stats end else def with_gc_stats yield end end end class Time < Base def measure ::Time.now.to_f end def format(measurement) if measurement < 2 '%d ms' % (measurement * 1000) else '%.2f sec' % measurement end end end class ProcessTime < Time Mode = RubyProf::PROCESS_TIME def measure RubyProf.measure_process_time end end class WallTime < Time Mode = RubyProf::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 super end def measure RubyProf.measure_cpu_time end end class Memory < Base Mode = RubyProf::MEMORY if RubyProf.const_defined?(:MEMORY) # ruby-prof wrapper if RubyProf.respond_to?(:measure_memory) def measure RubyProf.measure_memory / 1024.0 end # Ruby 1.8 + adymo patch elsif GC.respond_to?(:allocated_size) def measure GC.allocated_size / 1024.0 end # Ruby 1.8 + lloyd patch elsif GC.respond_to?(:heap_info) def measure GC.heap_info['heap_current_memory'] / 1024.0 end # Ruby 1.9 unpatched elsif GC.respond_to?(:malloc_allocated_size) def measure GC.malloc_allocated_size / 1024.0 end end def format(measurement) '%.2f KB' % measurement end end class Objects < Base Mode = RubyProf::ALLOCATIONS if RubyProf.const_defined?(:ALLOCATIONS) if RubyProf.respond_to?(:measure_allocations) def measure RubyProf.measure_allocations end elsif ObjectSpace.respond_to?(:allocated_objects) def measure ObjectSpace.allocated_objects end end def format(measurement) measurement.to_i.to_s end end class GcRuns < Base Mode = RubyProf::GC_RUNS if RubyProf.const_defined?(:GC_RUNS) if RubyProf.respond_to?(:measure_gc_runs) def measure RubyProf.measure_gc_runs end elsif GC.respond_to?(:collections) def measure GC.collections end elsif GC.respond_to?(:heap_info) def measure GC.heap_info['num_gc_passes'] end end def format(measurement) measurement.to_i.to_s end end class GcTime < Base Mode = RubyProf::GC_TIME if RubyProf.const_defined?(:GC_TIME) if RubyProf.respond_to?(:measure_gc_time) def measure RubyProf.measure_gc_time end elsif GC.respond_to?(:time) def measure GC.time end end def format(measurement) '%d ms' % (measurement / 1000) end end end end end end