Ruby Performance Optimization

Table of contents

1. Ruby Performance Optimization
   1. For the Best Reading Experience...
   2. ​
   3. Table of Contents
   4. Early praise for Ruby Performance Optimization
   5. Preface
      1. The Need for Speed
      2. How to Read This Book
      3. Acknowledgments
   6. Chapter 1: What Makes Ruby Code Fast
      1. What Makes Ruby Code Slow
      2. Optimize Memory
      3. Get Into the Performance Mind-set
   7. Chapter 2: Fix Common Performance Problems
      1. Save Memory
      2. Optimize Your Iterators
      3. Write Less Ruby
      4. Takeaways
   8. Chapter 3: Make Rails Faster
      1. Make ActiveRecord Faster
      2. Make ActionView Faster
      3. Takeaways
   9. Chapter 4: Profile
      1. Measure with Ruby-Prof
      2. Visualize with Ruby-Prof Printers
      3. Visualize with KCachegrind (QCachegrind)
      4. Takeaways
   10. Chapter 5: Learn to Optimize with the Profiler
       1. Optimize but Don’t Break
       2. Pick Low-Hanging Fruit
       3. Take a Step Back
       4. Takeaways
   11. Chapter 6: Profile Memory
       1. Detect Excessive Memory Usage
       2. Profile Memory with Ruby-Prof
       3. Measure Memory Yourself with GC#stat and GC:: Profiler
       4. Takeaways
   12. Chapter 7: Measure
       1. Minimize External Factors
       2. Make Internals Behave Predictably
       3. Analyze and Compare Measurements Using Statis tics
       4. Takeaways
   13. Chapter 8: Test Performance
       1. Benchmark
       2. Assert Performance
       3. Report Slowdowns and Optimizations
       4. Test Rails Application Performance
       5. Takeaways
   14. Chapter 9: Think Outside the Box
       1. Cycle Long-Running Ins tances
       2. Fork to Run Heavy Jobs
       3. Do Out-of-Band Garbage Collection
       4. Tune Your Database
       5. Buy Enough Resources for Production
       6. Takeaways
   15. Chapter 10: Tune Up the Garbage Collector
       1. Understand How Ruby Uses Memory
       2. Know What Triggers GC
       3. Understand Why GC in Ruby 2.1 and 2.2 Is So M uch Faster
       4. Tune Up GC Settings
       5. Takeaways
       6. Onward!
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