Ruby's bin men - Speaker Deck

Ruby's bin men

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Ruby’s bin men Elise Huard - Euruko 05/2012 Friday, 1 June 12

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Garbage collection? Friday, 1 June 12

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Automatic Dynamic Memory Management Friday, 1 June 12

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space leaks + dangling pointers abstraction Friday, 1 June 12

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Garbage Collection Allocation Friday, 1 June 12

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Overhead: trade-offs Friday, 1 June 12

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Ruby: all in the heap Friday, 1 June 12

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Rails? Friday, 1 June 12

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I am the smallest rails app! Here is my source code: %w(action_controller/railtie coderay).map &method(:require) run TheSmallestRailsApp ||= Class.new(Rails::Application) { config.secret_token = routes.append { root to: 'hello#world' }.inspect initialize! } class HelloController < ActionController::Base def world render inline: " The Smallest Rails App

I am the smallest rails app!

Here is my source code:

#{CodeRay.scan_file(__FILE__, :ruby).div(line_numbers: :table)} Make me smaller " end end Make me smaller https://github.com/artemave/thesmallestrailsapp.com The smallest Rails app Friday, 1 June 12

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The smallest Rails app {:TOTAL=>351159, :FREE=>-8392, :T_OBJECT=>218, :T_CLASS=>894, :T_MODULE=>138, :T_FLOAT=>20, :T_STRING=>219091 :T_REGEXP=>489 :T_ARRAY=>22848 :T_HASH=>4896 :T_STRUCT=>76 :T_BIGNUM=>66 :T_FILE=>330 :T_DATA=>7502, :T_MATCH=>651, :T_COMPLEX=>0, :T_RATIONAL=>57, :T_NODE=>102163, :T_ICLASS=>112} Friday, 1 June 12

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MRI Ruby 1.8 Friday, 1 June 12

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Conservative Mark-and-sweep stop-the-world Friday, 1 June 12

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Mark Flags Next ... RValue FL_MARK http://www.slideshare.net/authorNari/parallel-worlds-of-crubys-gc Friday, 1 June 12

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Sweep http://patshaughnessy.net/2012/3/23/why-you-should-be-excited-about-garbage-collection-in-ruby-2-0 Flags Next ... RValue next in list Friday, 1 June 12

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Stop the world Friday, 1 June 12

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Ruby 1.9 Friday, 1 June 12

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obj = Object.new Lazy sweep Friday, 1 June 12

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RUBY_GC_MALLOC_LIMIT RUBY_HEAP_MIN_SLOTS RUBY_FREE_MIN Tune with environment Friday, 1 June 12

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Tune with environment Friday, 1 June 12

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Aside: REE Friday, 1 June 12

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Ruby 2.0 Friday, 1 June 12

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! copy on write friendly Bitmap marking Friday, 1 June 12

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Parallel marking Friday, 1 June 12

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Rubinius Friday, 1 June 12

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• Nursery • Young generation • Mature generation • (Large objects) Generational GC Friday, 1 June 12

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Aside: kiji Friday, 1 June 12

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JRuby Friday, 1 June 12

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• Generational: • Young (eden - Survivor1 - Survivor2) • Tenured • Permanent Area • minor/major garbage collection JVM Friday, 1 June 12

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MacRuby & RubyMotion Friday, 1 June 12

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Tools Friday, 1 June 12

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#define GC_PROFILE_MORE_DETAIL 1 ... #define GC_NOTICE 1 22 GC during init with default ruby 1.9.3-rc1 Friday, 1 June 12

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Perftools.rb Dtrace Friday, 1 June 12

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Friday, 1 June 12

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• READ TEH CODES • read this: • read recent publications on garbage collection To know more Friday, 1 June 12