byroot

# frozen_string_literal: true

require 'bundler/inline'

gemfile do
  gem "benchmark-ips"
end

require "benchmark/ips"

byroot

Things to know

• Lobsters doesn't use Puma's preload_app! because it relies on phased restarts. This seem to cause massive GVL contention after a deploy.
• Would be worth trying to exclude that data, but aside from the very begining it's not clear where deploys are in the dataset. Need to check with @pushcx.

Observations

• The IO heavy requests are in the higher percentile.
• IO heavy requests are the one suffering the most from GVL contention.
• Which makes sense, the more IO you do, the more you need to re-acquire the GVL, so the most you suffer if it is contented.

byroot

require 'json'

path = ARGV.first

class Request
  attr_reader :gc_ms, :run_ms, :idle_ms, :stall_ms, :io_percent, :method, :action

  def initialize(hash)
    @gc_ms = hash[:gc_ms]
    @run_ms = hash[:run_ms]

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src_count = frozen_src_count = 0

ARGV.each do |gem_path|
  Dir.glob(File.join(gem_path, "**/*.rb")) do |file|
    next unless File.file?(file) && File.readable?(file)
    src_count += 1
    frozen_src_count += 1 if File.binread(file) =~ /^# frozen[-_]string[-_]literal: (true|false)$/
  end
end

byroot

require 'benchmark/ips'
require 'oj'
require 'json'

puts "Ruby version: #{RUBY_VERSION}"
puts "Oj version: #{Oj::VERSION}"
puts "JSON version: #{JSON::VERSION}"

json_encoder = JSON::State.new(JSON.dump_default_options)
# Sample data to hash - using varied data types

byroot

• Extending -> record module and method_missing + bind_call (confirm that bind call doesn't allocate metaclass).
• Single generic Relation class. Stop dynamic method generation.

byroot

# frozen_string_literal: true

require 'bundler/inline'

gemfile do
  source 'https://rubygems.org'
  gem 'benchmark-ips'
end

require 'benchmark/ips'

byroot

RubyVM::InstructionSequence.compile_option = { peephole_optimization: false }
class RubyVM::InstructionSequence
  def self.load_iseq(path)
    RubyVM::InstructionSequence.compile_file(path)
  end
end


# Can be enabled with RUBYOPT="-r /path/to/disable_opt.rb"

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$ ruby -v
ruby 2.7.1p83 (2020-03-31 revision a0c7c23c9c) [x86_64-darwin17]
$ ruby yield-vs-block.rb
Nested yield stack size: 402
Forward block stack size: 202
Warming up --------------------------------------
            baseline    82.138k i/100ms
        nested-yield    16.030k i/100ms
       forward-block    28.945k i/100ms
Calculating -------------------------------------

byroot

begin
  require "bundler/inline"
rescue LoadError => e
  $stderr.puts "Bundler version 1.10 or later is required. Please update your Bundler"
  raise e
end

gemfile(true) do
  source "https://rubygems.org"
  gem "activerecord", "~> 5.2"