Performance Optimization in Ruby

PERFORMANCE OPTIMIZATION IN RUBY

PRATHMESH RANAUT

© Prathmesh Ranaut, 2017


☃ -> "


WHO AM I

> Computer Science Undergrad

> Helped ! of ruby apps improve performance


> Celluloid - Concurrent ruby framework> Improved performance by 300%


WHAT IS PERFORMANCE OPTIMIZATION? !


DOING

MOREWITH

LESS


HOW?


TIP #1© Prathmesh Ranaut, 2017

ALWAYS HAVE A BENCHMARKING SUITE


BECHMARK-IPS


require "benchmark/ips"

Benchmark.ips do |ips| ips.report("addition") { 1 + 2 }end


require "benchmark/ips"

Benchmark.ips do |ips| ips.report("addition") { 1 + 2 }end

Warming up -------------------------------------- addition 325.015k i/100msCalculating ------------------------------------- addition 12.544M (± 8.5%) i/s - 62.403M in 5.012765s


class Worker include Celluloid

def hashed(hash, key) hash[key] endend

# Worker pool of different sizespool_10 = Worker.pool(size: 10)pool_100 = Worker.pool(size: 100)

hash = {}

ENTRIES = 10_000TESTS = 100_000# Using a constant key, to derive consistent benchmarking resultsKEY = 500

# Populate hash arrayENTRIES.times do |i| hash[i] = iend

Benchmark.bmbm do |ips| puts "Finding the key : #{KEY}"

ips.report("pool - 10") do TESTS.times do pool_10.async.hashed(hash, KEY) end end

ips.report("pool - 100") do TESTS.times do pool_100.async.hashed(hash, KEY) end endend



UPGRADE RUBY


RUBY 1.9

> YARV


RUBY 1.9

> YARV

RUBY 2.0> Copy-on-Write


RUBY 2.1

> Generation GC

RUBY 2.4> Improves the speed to access an instance variable



TRY ANOTHER IMPLEMENTATION OF RUBY


RUBY 2.3 VS JRUBY

RUBY 2.3

Calculating ------------------------------------- addition 12.544M (± 8.5%) i/s - 62.403M

JRUBY

Calculating ------------------------------------- addition 22.929M (± 9.3%) i/s - 113.127M



PROFILE YOUR METHODS



FIGURE OUT THE BOTTLENECKI/O OR CPU OR MEMORY



SWITCH TO ELIXIR


TRY MULTITHREADING


TOOLSTHAT MAKE MY LIFE EASIER


METHOD PROFILERHTTPS://GITHUB.COM/CHANGE/METHOD_PROFILER


https://github.com/change/method_profiler

profiler = MethodProfiler.observe(BazingaClass)# Do stuff with the BazingaClassputs profiler.report



KCACHEGRINDHTTPS://KCACHEGRIND.GITHUB.IO/


https://kcachegrind.github.io/


RUBYPROFHTTPS://GITHUB.COM/RUBY-PROF/RUBY-PROF


https://github.com/ruby-prof/ruby-prof

require 'ruby-prof'

# profile the coderesult = RubyProf.profile do # ... code to profile ...end

# print a graph profile to textprinter = RubyProf::GraphPrinter.new(result)printer.print(STDOUT, {})



ObjectSpace.count_objects


{ :TOTAL=>30165, :FREE=>2216, :T_OBJECT=>928, :T_CLASS=>574, :T_MODULE=>38, :T_FLOAT=>4, :T_STRING=>13182, :T_REGEXP=>77, :T_ARRAY=>2715, :T_HASH=>88, :T_STRUCT=>3, :T_BIGNUM=>2, :T_FILE=>30, :T_DATA=>363, :T_MATCH=>233, :T_COMPLEX=>1, :T_SYMBOL=>6, :T_IMEMO=>4530, :T_NODE=>5138, :T_ICLASS=>37}


DTRACE


THANK YOU&

[email protected]

HTTPS://TWITTER.COM/PRATHMESHRANAUT


Performance Optimization in Ruby

Engineering