Since Matz Ruby Implimentation ruby 1.9.3 has been released as preview release, I think that all Rubyists should abandon the ruby they are usually using, ruby 1.9.2, and should use 1.9.3 now.
Ruby 1.9.3 also supports clang instead of gcc inofficially. You can compile ruby with clang 3.0 and almost everything works(*1).
Building clang 3.0
There are two things you have to understand before you build clang.
- Clang is a subproject of LLVM. You cannot build clang independently to LLVM unless you are an LLVM specialist.
- LLVM build directly has to be not in LLVM source tree for some reason.
Otherwise it just fails building.
$ mkdir -p ~/src/llvm-git-build
$ cd ~/git
$ git clone http://llvm.org/git/llvm.git
$ cd tools
$ git clone http://llvm.org/git/clang.git
$ cd ~/src/llvm-git-build
$ ~/git/llvm/configure --prefix=`pwd`/local
$ make && make install
That will install llvm commands and clang in ~/src/llvm-git-build/local/bin directory.
$ ~/src/llvm-git-build/local/bin/clang -v
clang version 3.0 (http://llvm.org/git/clang.git d484040a5fc8d8d8a7a6a0239fc3b34486258181)
Target: x86_64-apple-darwin10.8.0
Thread model: posix
Building ruby 1.9.3 with clang
$ cd ~/git
$ git clone http://github.com/ruby/ruby.git ruby193
$ cd ruby193
$ git checkout ruby_1_9_3 origin/ruby_1_9_3
a.sh
export CC=~/src/llvm-git-build/local/bin/clang
autoconf && ./configure --with-out-ext=tk\* --with-arch=x86_64 --prefix=`pwd`/local --with-readline-dir=/usr/local --with-libyaml-include=/usr/local/include && make && make install
then
$ sh a.sh
Benchmark
$ local/bin/ruby benchmark/run.rb --ruby=local/bin/ruby
I ran on ruby made by clang and ruby made by gcc and compared them.
| gcc/clang | gcc [sec] | clang [sec] | |
| loop_generator | 1.55 | 1.187 | 0.768 |
|---|---|---|---|
| vm_thread_pass_flood | 1.38 | 0.52 | 0.377 |
| vm1_const | 1.23 | 1.449 | 1.175 |
| so_random | 1.15 | 1.191 | 1.04 |
| so_k_nucleotide | 1.11 | 0.02 | 0.018 |
| vm2_case | 1.10 | 0.338 | 0.307 |
| vm2_regexp | 1.07 | 1.8 | 1.683 |
| loop_whileloop | 1.07 | 0.677 | 0.634 |
| vm_thread_pipe | 1.07 | 1.659 | 1.556 |
| so_count_words | 1.06 | 0.442 | 0.418 |
| loop_whileloop2 | 1.06 | 0.148 | 0.14 |
| so_reverse_complement | 1.06 | 0.019 | 0.018 |
| vm1_swap | 1.06 | 0.956 | 0.906 |
| vm2_array | 1.05 | 1.543 | 1.468 |
| vm1_ivar | 1.04 | 1.662 | 1.596 |
| vm1_length | 1.04 | 1.467 | 1.412 |
| vm_thread_create_join | 1.03 | 4.45 | 4.321 |
| vm_thread_pass | 1.02 | 2.308 | 2.258 |
| loop_times | 1.02 | 1.834 | 1.796 |
| app_uri | 1.01 | 1.362 | 1.346 |
| io_select2 | 1.00 | 3.976 | 3.957 |
| vm1_rescue | 1.00 | 0.799 | 0.798 |
| vm1_ivar_set | 1.00 | 1.766 | 1.765 |
| io_select3 | 1.00 | 0.03 | 0.03 |
| vm1_ensure | 1.00 | 0.736 | 0.738 |
| io_select | 1.00 | 3.503 | 3.513 |
| vm_thread_alive_check1 | 1.00 | 0.327 | 0.328 |
| so_mandelbrot | 0.99 | 6.776 | 6.817 |
| vm1_not | 0.99 | 0.958 | 0.965 |
| vm2_poly_method_ov | 0.98 | 0.422 | 0.43 |
| io_file_write | 0.98 | 1.78 | 1.815 |
| so_nbody | 0.97 | 4.861 | 5.012 |
| vm2_eval | 0.97 | 28.817 | 29.772 |
| so_partial_sums | 0.97 | 6.003 | 6.211 |
| so_concatenate | 0.96 | 5.322 | 5.536 |
| so_exception | 0.96 | 1.653 | 1.723 |
| loop_for | 0.95 | 1.865 | 1.96 |
| vm1_neq | 0.95 | 1.206 | 1.269 |
| io_file_read | 0.95 | 3.764 | 3.965 |
| so_sieve | 0.94 | 1.06 | 1.13 |
| vm3_gc | 0.93 | 1.593 | 1.712 |
| so_pidigits | 0.92 | 0.905 | 0.982 |
| so_spectralnorm | 0.92 | 3.911 | 4.265 |
| vm2_proc | 0.91 | 0.858 | 0.941 |
| so_nested_loop | 0.91 | 1.415 | 1.554 |
| so_fannkuch | 0.89 | 2.321 | 2.6 |
| vm3_clearmethodcache | 0.89 | 0.683 | 0.767 |
| so_array | 0.89 | 1.859 | 2.098 |
| vm2_defined_method | 0.88 | 4.449 | 5.034 |
| io_file_create | 0.88 | 4.266 | 4.831 |
| vm1_simplereturn | 0.88 | 2.034 | 2.307 |
| vm_thread_mutex3 | 0.88 | 1.894 | 2.164 |
| vm2_send | 0.87 | 0.494 | 0.567 |
| vm2_unif1 | 0.87 | 0.419 | 0.484 |
| so_matrix | 0.86 | 1.173 | 1.357 |
| so_nsieve_bits | 0.86 | 4.002 | 4.637 |
| app_tak | 0.86 | 1.133 | 1.316 |
| so_lists | 0.85 | 1.439 | 1.698 |
| app_tarai | 0.85 | 0.9 | 1.062 |
| vm1_block | 0.85 | 2.818 | 3.331 |
| so_ackermann | 0.82 | 0.891 | 1.082 |
| vm_thread_mutex1 | 0.82 | 1.145 | 1.393 |
| so_nsieve | 0.80 | 3.188 | 3.967 |
| vm2_super | 0.80 | 0.68 | 0.852 |
| so_binary_trees | 0.79 | 0.492 | 0.62 |
| app_strconcat | 0.79 | 1.93 | 2.444 |
| vm2_mutex | 0.79 | 1.546 | 1.968 |
| vm2_zsuper | 0.78 | 0.682 | 0.88 |
| vm2_poly_method | 0.77 | 2.654 | 3.444 |
| app_factorial | 0.76 | 1.317 | 1.734 |
| app_erb | 0.76 | 1.834 | 2.426 |
| so_meteor_contest | 0.75 | 4.953 | 6.626 |
| so_object | 0.74 | 1.047 | 1.416 |
| vm2_method | 0.71 | 2.174 | 3.049 |
| app_pentomino | 0.70 | 25.525 | 36.325 |
| app_fib | 0.70 | 0.812 | 1.168 |
| so_fasta | 0.67 | 2.866 | 4.302 |
| app_answer | 0.66 | 0.075 | 0.113 |
| app_mandelbrot | 0.65 | 2.422 | 3.743 |
| app_raise | 0.49 | 0.861 | 1.743 |
| vm_thread_mutex2 | 0.41 | 1.228 | 2.977 |
Considering all the results gcc-made ruby is faster than clang-made ruby but not in all the benchmarks. Hopefully the results must be an interesting example for some people.
Footnote and references
- *1:
make test-allshows that there is one issue in Fiber with the ruby made by clang. http://ujihisa.blogspot.com/2011/01/how-to-build-mri-n-times-faster.htmlcomparison between clang and gcc about time to build ruby
