The great Ruby Showdown

Transcript

1. The great Ruby Showdown How do the different Rubies out

   there perform with a non trivial ruby application? Chris Parsons - @chrismdp Wednesday, 22 February 12

2. Battleship http://github.com/ threedaymonk/ battleship Wednesday, 22 February 12

3. Only one round No display GuntherPlayer with fixed random seed

   Running on 2009 MBP http://github.com/ chrismdp/battleship My changes Wednesday, 22 February 12

4. Fixed random seed doesn’t work! Different Rubies do random differently

   Need to perform 50 ‘ticks’ instead Also different startup times was a headache Lessons Wednesday, 22 February 12

5. The players mri 1.8.7 mri 1.9.2 mri 1.9.3 jruby maglev

   rubinius macruby Wednesday, 22 February 12

6. Ruby 1.8.7 • No show - code doesn’t work •

   You shouldn’t be using it anyway • Ruby 1.9.2 has out and stable since summer 2010 Wednesday, 22 February 12

7. MacRuby 0.10 • Ruby based on the Objective-C Runtime •

   Long startup time • 442.65s (!!) • 431.90s (!!) Wednesday, 22 February 12

8. Rubinius (head) • Used: RBXOPT=-X19 rbx -v (can default to

   1.9 too) • Long startup time • 56.41s • 52.35s • 90.16s (!) • 94.67s (!!) • 63.07s - very variable! Wednesday, 22 February 12

9. Maglev (head) • Based on vm-ware’s GemStone virtual machine •

   Can “transparently manage very large datasets” • 44.91s • 44.99s • 53.02s • 45.53s Wednesday, 22 February 12

10. Ruby 1.9.2 • The ‘standard’ during the tournament • Was

    focused on a ‘complete’ version of ruby 1.9 • 28.50s • 28.74s • 28.51s • 28.97s Wednesday, 22 February 12

11. Jruby (1.9) • A number of changes needed to the

    app Not an ‘out the box’ change, but still worked after tweaks. • Used: JRUBY_OPTS='--1.9 --server -J-Xmx1024m' • Long startup time: ~ 20-30 seconds • 25.93s • 25.05s • 27.60s • 26.26s Wednesday, 22 February 12

12. Ruby 1.9.3 • Better GC - doesn’t stop the world

    for as long • Focused on a better implementation rather than compliance • 23.64s • 23.80s • 26.30s • 24.67s Wednesday, 22 February 12

13. The Obligatory Graph mri 1.9.3 JRuby 1.9 mri 1.9.2 Maglev

    Rubinius mri 1.8.7 0 20 40 60 80 (lower is better) Wednesday, 22 February 12

14. The Obligatory Graph mri 1.9.3 JRuby 1.9 mri 1.9.2 Maglev

    Rubinius MacRuby 10 mri 1.8.7 0 125 250 375 500 (lower is better) Wednesday, 22 February 12

15. Conclusions Wednesday, 22 February 12

16. Use 1.9.3 Wednesday, 22 February 12

17. JRuby 1.9 Slow to start, but just as good Wednesday,

    22 February 12

18. MRI 1.9.2 Ultra-stable Wednesday, 22 February 12

19. MacRuby Rubinius Need work Wednesday, 22 February 12

20. Maglev The new kid Looks promising Wednesday, 22 February 12

21. ~ The End ~ Chris Parsons @chrismdp Wednesday, 22 February

    12