Ruby search for string inside of string performance difference.rb

# ⇒  ruby string_find_test.rb
# Started 2020-01-02 15:20:04 -0500
# Ended 2020-01-02 15:20:05 -0500
# Speed 1.7854981422424316s
# 
# 
# 
# Started 2020-01-02 15:20:05 -0500
# Ended 2020-01-02 15:20:09 -0500
# Speed 3.125840902328491s


start_time = Time.now
found = 0
(0..10000000).each do |i|
   my_string = "abcdefg"
   found += 1 if my_string.include? "cde"
end #/each
end_time = Time.now
puts "Started #{start_time}"
puts "Ended #{end_time}"
puts "Speed #{end_time.to_f - start_time.to_f}s"


puts ""
puts ""
puts ""

start_time = Time.now
found = 0
(0..10000000).each do |i|
   found += 1 if 'aBcDe' =~ /bcd/i
end #/each
end_time = Time.now
puts "Started #{start_time}"
puts "Ended #{end_time}"
puts "Speed #{end_time.to_f - start_time.to_f}s"