172 lines
3.3 KiB
Ruby
172 lines
3.3 KiB
Ruby
# frozen_string_literal: true
|
|
|
|
# using this script to try figure out why Ruby 2 is slower than 1.9
|
|
require 'flamegraph'
|
|
|
|
Flamegraph.generate('test.html', fidelity: 2) do
|
|
require File.expand_path("../../config/environment", __FILE__)
|
|
end
|
|
exit
|
|
|
|
require 'memory_profiler'
|
|
|
|
result = MemoryProfiler.report do
|
|
require File.expand_path("../../config/environment", __FILE__)
|
|
end
|
|
result.pretty_print
|
|
|
|
exit
|
|
|
|
require 'benchmark'
|
|
|
|
def profile_allocations(name)
|
|
GC.disable
|
|
initial_size = ObjectSpace.count_objects
|
|
yield
|
|
changes = ObjectSpace.count_objects
|
|
changes.each do |k, _|
|
|
changes[k] -= initial_size[k]
|
|
end
|
|
puts "#{name} changes"
|
|
changes.sort { |a, b| b[1] <=> a[1] }.each do |a, b|
|
|
next if b <= 0
|
|
# 1 extra hash for tracking
|
|
puts "#{a} #{a == :T_HASH ? b - 1 : b}"
|
|
end
|
|
GC.enable
|
|
end
|
|
|
|
def profile(name, &block)
|
|
puts "Profiling all object allocation for #{name}"
|
|
GC.start
|
|
GC.disable
|
|
|
|
items = []
|
|
objs = []
|
|
|
|
ObjectSpace.trace_object_allocations do
|
|
block.call
|
|
|
|
ObjectSpace.each_object do |o|
|
|
objs << o
|
|
end
|
|
|
|
objs.each do |o|
|
|
g = ObjectSpace.allocation_generation(o)
|
|
if g
|
|
l = ObjectSpace.allocation_sourceline(o)
|
|
f = ObjectSpace.allocation_sourcefile(o)
|
|
c = ObjectSpace.allocation_class_path(o)
|
|
m = ObjectSpace.allocation_method_id(o)
|
|
items << "Allocated #{c} in #{m} #{f}:#{l}"
|
|
end
|
|
end
|
|
end
|
|
|
|
items.group_by { |x| x }.sort { |a, b| b[1].length <=> a[1].length }.each do |row, group|
|
|
puts "#{row} x #{group.length}"
|
|
end
|
|
|
|
GC.enable
|
|
profile_allocations(name, &block)
|
|
end
|
|
|
|
def stuff
|
|
u = User.first
|
|
r = TopicQuery.new(u, {}).list_latest
|
|
r.topics.to_a
|
|
end
|
|
|
|
stuff
|
|
profile_allocations "stuff" do
|
|
stuff
|
|
end
|
|
|
|
# Benchmark.bmbm do |x|
|
|
#
|
|
# x.report("find") do
|
|
# 100.times{stuff}
|
|
# end
|
|
#
|
|
# end
|
|
#
|
|
# x.report("grab 10 users id") do
|
|
# 100.times{User.limit(10).select(:id).to_a}
|
|
# end
|
|
#
|
|
# x.report("grab 10 users") do
|
|
# 100.times{User.limit(10).to_a}
|
|
# end
|
|
#
|
|
# profile("topic query") do
|
|
# r = TopicQuery.new(u, {}).list_latest
|
|
# r.topics.to_a
|
|
# end
|
|
|
|
#
|
|
# RubyProf.start
|
|
#
|
|
# r = TopicQuery.new(u, {}).list_latest
|
|
# r.topics.to_a
|
|
#
|
|
# result = RubyProf.stop
|
|
# printer = RubyProf::GraphPrinter.new(result)
|
|
# # printer = RubyProf::FlatPrinter.new(result)
|
|
# printer.print(STDOUT, :min_percent => 2)
|
|
#
|
|
# exit
|
|
#
|
|
# # User.limit(10).to_a
|
|
# User.limit(10).select(:created_at).to_a
|
|
#
|
|
# profile("limit 10") do
|
|
# User.limit(10).select(:created_at).to_a
|
|
# end
|
|
#
|
|
# exit
|
|
# User.limit(10).to_a
|
|
# exit
|
|
#
|
|
# User.select('id, 2 bob').first
|
|
# Benchmark.bmbm do |x|
|
|
#
|
|
# x.report("find") do
|
|
# 100.times{User.find(1)}
|
|
# end
|
|
#
|
|
# x.report("grab 10 users created_at") do
|
|
# 100.times{User.limit(10).select(:created_at).to_a}
|
|
# end
|
|
#
|
|
# x.report("grab 10 users id") do
|
|
# 100.times{User.limit(10).select(:id).to_a}
|
|
# end
|
|
#
|
|
# x.report("grab 10 users") do
|
|
# 100.times{User.limit(10).to_a}
|
|
# end
|
|
#
|
|
#
|
|
# x.report("pg direct grab 10 users") do
|
|
# 100.times do
|
|
# r = ActiveRecord::Base.connection.raw_connection.async_exec("select * from users limit 10")
|
|
# r.fields.each_with_index do |f,i|
|
|
# r.ftype(i)
|
|
# end
|
|
# r.each_row do |x|
|
|
# x
|
|
# end
|
|
# end
|
|
# end
|
|
#
|
|
# end
|
|
#
|
|
|
|
# profile("find") do
|
|
# User.find(1)
|
|
# end
|
|
# puts
|
|
# profile("where") do
|
|
# User.where(id: 1).first
|
|
# end
|