Pry session performance impact test

win_pry_case.rb

puts 'start'
require 'mongo'

Mongo::Logger.level = Logger::FATAL
$client = Mongo::Client.new('mongodb://127.0.0.1:15000/test', :connect => :direct, min_pool_size:1)

@item_tyme_by_title = {}
def watch(title:)
	ttime = nil
	_time_start = Time.now
	
	yield
	
	ttime = Time.now - _time_start   # total time
	item_time = ttime/@n*1000
	
	# set base
	@item_tyme_by_title[title] ||= item_time
	
	k = item_time / @item_tyme_by_title[title]
	dk = k-1
	puts "#{'%-35s' % title} -- total: #{'%7.3f' % ttime} s,  item time = #{'%7.3f' % item_time} ms   (#{'%5.2f' % k}x) (#{'+' if dk >0}#{'%4.2f' % dk})"
end

def tests

	collection = $client[:people]
	collection.delete_many

	@n = 500
	
	watch(title:"insert #{@n} (w:0)") do
		@n.times do |n|
			doc = {_id:n, name: "Steve_#{n}", hobbies: [ 'hiking', 'tennis', 'fly fishing' ] }
			result = collection.with(:write => { :w => 0 }).insert_one(doc)
		end
	end
	collection.delete_many
	watch(title:"insert #{@n} (w:1)") do
		@n.times do |n|
			doc = {_id:n, name: "Steve_#{n}", hobbies: [ 'hiking', 'tennis', 'fly fishing' ] }
			result = collection.insert_one(doc)
		end
	end

	watch(title:"#{@n} times find all") do
		@n.times do
			collection.find.to_a.to_s
		end
	end

	res = nil
	watch(title:"#{@n} times find first (full)") do
		@n.times do
			res = collection.find.first.to_s
		end
	end

	watch(title:"#{@n} times find first (full by id)") do
		@n.times do
			res = collection.find({:_id=>3}).first.to_s
		end
	end

	watch(title:"#{@n} times find first (only name)") do
		@n.times do
			collection.find({}, projection:{name:1, _id:0}).first
		end
	end

	watch(title:"#{@n} times count()") do
		@n.times do
			collection.count()
		end
	end

	@n = 1

	2.times do |n|
		sleep 0.05
		watch(title:"single find first (full) (#{n})") do
			@n.times do
				collection.find.first.to_s
			end
		end
	end
	
end

puts '1.1) Normal'
tests
puts
puts '1.2) Normal again'
tests


puts
puts

th = Thread.new do
	puts '- Starting Pry...'
	require 'pry'
	Pry.config.color = false
				
	Pry.hooks.add_hook(:before_session, 'show ex title') do |output, binding, pry|
		$pry = pry
	end
	
	binding.pry
	puts '- Pry finished'
end

sleep 3
puts
puts
puts '2) With active Pry session'
tests

puts
puts 'closing pry session'
$pry.eval 'exit'
sleep 1
puts
puts

puts '3) After closed Pry session'
tests


puts 
puts '- done -'