ruby--ruby/benchmark/bm_vm1_gc_short_with_symbol.rb

# make many symbols
50_000.times{|i| sym = "sym#{i}".to_sym}
GC.start
GC.start

i = 0
while i<30_000_000 # while loop 1
  a = '' # short-lived String
  b = ''
  c = ''
  d = ''
  e = ''
  f = ''
  i+=1
end