From: ThoML Date: 2008-03-18T18:00:02+09:00 Subject: Re: Ruby "Speedup" hints? > The difference increases in real world reports. This and some other tips seem specific to either ruby 1.8 or 1.9. While StringIO seems much faster with 1.9, in my world, the difference is rather marginal with 1.8. Also, the following is slightly faster with 1.8: times = ARGV[0].to_i times.times { STDOUT.puts "hola mundo" } YMMV etc.