require 'zlib'
Signal.trap("INT") {}

str = ("A".."z").to_a.join("") * 100000
20.times do |i|
  str << str.dup
  spawn("ruby", "-e", <<~"end;", $$.to_s) # it must be out of GVL
    sleep 0.1
    begin
      Process.kill :INT, ARGV[0].to_i
    rescue Errno::ESRCH
    end
  end;
  Zlib::Deflate.deflate(str)
end