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author | Yehuda Katz + Carl Lerche <ykatz+clerche@engineyard.com> | 2009-05-11 17:07:05 -0700 |
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committer | Yehuda Katz + Carl Lerche <ykatz+clerche@engineyard.com> | 2009-05-11 17:07:05 -0700 |
commit | 00a9d4b91cccdd88146cbe716eca844dcdfa08e7 (patch) | |
tree | 77398a4e98eb391258813fef47f1ecf57ae58972 /tools/profile_requires.rb | |
parent | 0f6e764e4060b75ea8a335e6971209a08bf8b40a (diff) | |
parent | 0cac68d3bed3e6bf8ec2eb994858e4a179046941 (diff) | |
download | rails-00a9d4b91cccdd88146cbe716eca844dcdfa08e7.tar.gz rails-00a9d4b91cccdd88146cbe716eca844dcdfa08e7.tar.bz2 rails-00a9d4b91cccdd88146cbe716eca844dcdfa08e7.zip |
Merge branch 'master' into wip_abstract_controller
Conflicts:
actionpack/lib/action_controller/abstract/callbacks.rb
actionpack/lib/action_controller/abstract/renderer.rb
actionpack/lib/action_controller/base/base.rb
actionpack/lib/action_controller/dispatch/dispatcher.rb
actionpack/lib/action_controller/routing/route_set.rb
actionpack/lib/action_controller/testing/process.rb
actionpack/test/abstract_controller/layouts_test.rb
actionpack/test/controller/filters_test.rb
actionpack/test/controller/helper_test.rb
actionpack/test/controller/render_test.rb
actionpack/test/new_base/test_helper.rb
Diffstat (limited to 'tools/profile_requires.rb')
-rw-r--r-- | tools/profile_requires.rb | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/tools/profile_requires.rb b/tools/profile_requires.rb new file mode 100644 index 0000000000..68d0de3d80 --- /dev/null +++ b/tools/profile_requires.rb @@ -0,0 +1,75 @@ +#!/usr/bin/env ruby +# Example: +# ruby -Iactivesupport/lib tools/profile_requires.rb active_support +# ruby -Iactionpack/lib tools/profile_requires.rb action_controller +abort 'Use REE so you can profile memory and object allocation' unless GC.respond_to?(:enable_stats) + +GC.enable_stats +require 'rubygems' +Gem.source_index +require 'benchmark' + +module TrackHeapGrowth + class << self + attr_accessor :indent + attr_accessor :stats + end + self.indent = 0 + self.stats = [] + + def track_growth(file) + TrackHeapGrowth.indent += 1 + heap_before, objects_before = GC.allocated_size, ObjectSpace.allocated_objects + result = nil + elapsed = Benchmark.realtime { result = yield } + heap_after, objects_after = GC.allocated_size, ObjectSpace.allocated_objects + TrackHeapGrowth.indent -= 1 + TrackHeapGrowth.stats << [file, TrackHeapGrowth.indent, elapsed, heap_after - heap_before, objects_after - objects_before] if result + result + end + + def require(file, *args) + track_growth(file) { super } + end + + def load(file, *args) + track_growth(file) { super } + end +end + +Object.instance_eval { include TrackHeapGrowth } + +GC.start +before = GC.allocated_size +before_rss = `ps -o rss= -p #{Process.pid}`.to_i +before_live_objects = ObjectSpace.live_objects + +path = ARGV.shift + +if mode = ARGV.shift + require 'ruby-prof' + RubyProf.measure_mode = RubyProf.const_get(mode.upcase) + RubyProf.start +end + +ENV['NO_RELOAD'] ||= '1' +ENV['RAILS_ENV'] ||= 'development' +elapsed = Benchmark.realtime { require path } +results = RubyProf.stop if mode + +GC.start +after_live_objects = ObjectSpace.live_objects +after_rss = `ps -o rss= -p #{Process.pid}`.to_i +after = GC.allocated_size +usage = (after - before) / 1024.0 + +if mode + File.open("profile_startup.#{mode}.tree", 'w') do |out| + RubyProf::CallTreePrinter.new(results).print(out) + end +end + +TrackHeapGrowth.stats.reverse_each do |file, indent, sec, bytes, objects| + puts "%10.2f KB %10d obj %8.1f ms %s%s" % [bytes / 1024.0, objects, sec * 1000, ' ' * indent, file] +end +puts "%10.2f KB %10d obj %8.1f ms %d KB RSS" % [usage, after_live_objects - before_live_objects, elapsed * 1000, after_rss - before_rss] |