The Future of Ruby Performance Tooling
summary
Ruby 2.1 exposes hooks that make concrete work possible: rblineprof gives line-by-line relative timings but inflates runtime so it stays off production; ppprofiler automates 100-run bench runs to compare cache-on vs cache-off; StackProf is a low-overhead sampling profiler that records 30s production dumps and produces flame graphs revealing ActiveRecord hotspots; object_space.dump_all exports the entire heap to JSON (87 MB example, ~13 minutes to import) but pauses the app so it’s heavy yet precise for memory forensics.
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chapters (14)
- 0:00Intro
- 0:26Welcome
- 1:01Paperless Post
- 1:29Performance Matters
- 2:45Ruby Performance
- 3:06Application Performance
- 5:48The Past
- 11:53Active Support Notification
- 14:03Line Profiler
- 16:16Line Profit
- 19:42Stack prof
- 23:27Stack prof overview
- 27:28RBTrace overview
- 29:36RBTrace impact
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