3 ms·

Maybe the result would vary with JRuby or Rubinius (I'd be interested in benchmarks) because not only is Ruby itself not the fastest language, but its main impl

Maybe the result would vary with JRuby or Rubinius (I'd be interested in benchmarks) because not only is Ruby itself not the fastest language, but its main implementation (MRI) is also not the best for speed.

ClifReeder 14y ago
This is a good point that I didn't consider. Running the 'just iterate over the range version' of this code with jruby: [master] clifff@fair_and_square: ruby -v jruby 1.7.3 (1.9.3p385) 2013-02-21 dac429b on Java HotSpot(TM) 64-Bit Server VM 1.6.0_43-b01-447-11M4203 [darwin-x86_64] [master] clifff@fair_and_square: time ruby fair_and_square.rb C-large-1.in.bak real 6m39.105s user 6m37.762s sys 0m19.009s
- aghoreyshi 14y ago
  What is sys time? The amount of time it's actually run on the processor?
  - eatitraw 14y ago
    No, it is the amount of time your program spent in system calls: http://stackoverflow.com/questions/556405/what-do-real-user-and-sys-mean-in-the-output-of-time1 http://stackoverflow.com/questions/556405/what-do-real-user-...
  - jmah 14y ago
    The amount of time spent in system calls (i.e. the kernel).
- digger250 14y ago
  When I run the benchmark in C-ruby (2.0.0) I get: real 2m35.450s user 2m35.257s sys 0m0.139s On jruby with invokedynamic: time ruby -Xcompile.invokedynamic=true file2.rb C-large-1.in real 1m17.711s user 1m15.618s sys 0m0.830s In jruby without invokedynamic time ruby file2.rb C-large-1.in real 1m37.856s user 1m39.260s sys 0m0.854s