The SYMPOCALYPSE

output.csv

sympocalypse.rb

require 'open-uri'
require 'securerandom'

app = 'get("/") do params.each { |a| a.each(&:to_sym) } end'
$app_pid = Process.spawn('ruby', '-r', 'sinatra', '-e', app)

def memory_usage
  `ps -o rss= -p #{$app_pid}`.to_i
end

sleep 1 # wait for sinatra to start

csv = File.open('output.csv', 'w')
csv.puts [0, memory_usage].join(',')

num_reqs = 25_000

begin
  1.upto(num_reqs) do |i|
    query = (1..500).map { [SecureRandom.urlsafe_base64(6), SecureRandom.urlsafe_base64(6)].join('=') }.join('&')
    open "http://localhost:4567/?#{query}"
    print 13.chr
    print [i, num_reqs].join('/')
    csv.puts [i, memory_usage].join(',') if i % 100 == 0
  end
ensure
  csv.close
  Process.kill(:INT, $app_pid)
end