profiling ruby file approaches

ruby_profile_file.rb

require 'ruby-prof'
filename = '/tmp/example.txt'

File.delete(filename)

# profile first method
RubyProf.start

(1..100_000).each do |i|

  File.open(filename, 'ab') do |file|
    file.puts "line: #{i}"
  end

end

result = RubyProf.stop

filename = '/tmp/example2.txt'

# profile second
RubyProf.start
@file = File.open(filename, 'wb')

(1..100_000).each do |i|
  @file.puts "line: #{i}"
end

@file.close

result2 = RubyProf.stop

# print

printer = RubyProf::GraphPrinter.new(result)
printer2 = RubyProf::GraphPrinter.new(result2)
printer.print(STDOUT, {})
printer2.print(STDOUT, {})