Benchmark from http://patshaughnessy.net/2012/1/4/never-create-ruby-strings-longer-than-23-characters

gistfile1.txt

sebastien@kilkenny:~$ rvm jruby-1.6.5.1
sebastien@kilkenny:~$ ruby strings.rb 
      user     system      total        real
21 chars  0.448000   0.000000   0.448000 (  0.401000)
22 chars  0.213000   0.000000   0.213000 (  0.213000)
23 chars  0.172000   0.000000   0.172000 (  0.172000)
24 chars  0.201000   0.000000   0.201000 (  0.201000)
25 chars  0.187000   0.000000   0.187000 (  0.187000)
26 chars  0.174000   0.000000   0.174000 (  0.174000)
27 chars  0.170000   0.000000   0.170000 (  0.171000)
sebastien@kilkenny:~$ rvm ruby-1.9.3
sebastien@kilkenny:~$ ruby strings.rb 
       user     system      total        real
21 chars  0.280000   0.000000   0.280000 (  0.276880)
22 chars  0.280000   0.000000   0.280000 (  0.275738)
23 chars  0.280000   0.000000   0.280000 (  0.278675)
24 chars  0.390000   0.000000   0.390000 (  0.393095)
25 chars  0.390000   0.000000   0.390000 (  0.390478)
26 chars  0.390000   0.000000   0.390000 (  0.392452)
27 chars  0.390000   0.000000   0.390000 (  0.391757)
sebastien@kilkenny:~$