034 RR Benchmarking and Profiling

Podcast: Play in new window | Download (Duration: 1:03:55 — 87.8MB)

Panel

• Aaron Patterson (twitter github blog)
• Avdi Grimm (twitter github blog book)
• Charles Max Wood (twitter  github Teach Me To Code Rails Summer Camp)
• David Brady (blog twitter github ADDcasts)
• Josh Susser (twitter github blog)

Discussion

• Benchmarking
• Ruby’s Benchmark library
• Measuring speed
• Managing maintainability
• Startup and test speed
• Evan Phoenix’s benchmark suite gem
• Benchmark accuracy
• What are you measuring?
• What else is happening?
• Wet stones and dry stones
• Don’t build toward your benchmarks. Let your benchmarks tell you what’s going on.
• Printing benchmarks to the terminal – measures the write to the terminal too
• rubyprof
• code coverage tangent
• require ‘coverage’ for code coverage
• simple_cov
• perf tools
• dtrace
• New Relic
• Scout
• sampling profiling
• Test the benchmarks you’re given
• Communicate the process
• Aaron goes into Rails’ startup time profiling (blog post)
• to_s
• sub-shells (shelling out to find or run commands)
• finding javascript runtimes
• using the gemspec.erb method (from Dave)

Picks

• Divvy (Josh)
• How the Universe Works (Josh)
• Freakonomics (Dave)
• Predictably Irrational (Dave)
• Freakonomics 2 (Dave)
• Size-up (Dave)
• The Dave Ramsey Show (Chuck)
• The Entreleadership Podcast (Chuck)
• The Adventures of Merlin (Chuck)
• George Foreman Grill (Aaron)
• Pragmatic Thinking and Learning (Aaron)
• Fantastical (Aaron)
• Reg Braithwaite’s Combinators in Ruby (Avdi)
• Burn Notice(Avdi)