Benchmark for comparison of homebrew's ruby with and without CFLAGS="-march=native -O3"

ruby-no-cflags.txt

>> /usr/bin/time -l ruby thebench.rb 30 1000
Rehearsal --------------------------------------------------------
fib(30)                0.260000   0.000000   0.260000 (  0.255475)
1000 tempfiles         0.120000   0.250000   0.370000 (  0.429621)
----------------------------------------------- total: 0.630000sec

                           user     system      total        real
fib(30)                0.260000   0.000000   0.260000 (  0.259108)
1000 tempfiles         0.130000   0.270000   0.400000 (  0.848950)

        1.85 real         0.79 user         0.52 sys
   7073792  maximum resident set size
         0  average shared memory size
         0  average unshared data size
         0  average unshared stack size
      1743  page reclaims
         0  page faults
         0  swaps
        42  block input operations
        85  block output operations
         0  messages sent
         0  messages received
         0  signals received
        65  voluntary context switches
      1893  involuntary context switches

>> /usr/bin/time -l rake test 
280 tests, 994 assertions (280 passed, 0 pending, 0 failed, 0 errored)
Ran in 11.013013 seconds

       13.89 real        10.85 user         0.81 sys
  51933184  maximum resident set size
         0  average shared memory size
         0  average unshared data size
         0  average unshared stack size
     12864  page reclaims
        78  page faults
         0  swaps
        11  block input operations
       107  block output operations
     39957  messages sent
     28111  messages received
         0  signals received
      1193  voluntary context switches
       242  involuntary context switches

ruby-with-cflags.txt

>> /usr/bin/time -l bin/ruby thebench.rb 30 1000
Rehearsal --------------------------------------------------------
fib(30)                0.260000   0.000000   0.260000 (  0.255356)
1000 tempfiles         0.120000   0.250000   0.370000 (  0.457608)
----------------------------------------------- total: 0.630000sec

                           user     system      total        real
fib(30)                0.260000   0.000000   0.260000 (  0.256357)
1000 tempfiles         0.120000   0.250000   0.370000 (  0.433369)

        1.44 real         0.79 user         0.50 sys
   7438336  maximum resident set size
         0  average shared memory size
         0  average unshared data size
         0  average unshared stack size
      1832  page reclaims
         0  page faults
         0  swaps
         3  block input operations
        71  block output operations
         0  messages sent
         0  messages received
         0  signals received
        33  voluntary context switches
      1892  involuntary context switches

>> /usr/bin/time -l ~/dev/tmp/homebrew/bin/rake test
280 tests, 994 assertions (280 passed, 0 pending, 0 failed, 0 errored)
Ran in 10.628247 seconds
Coverage report generated for Protest to /Users/inkel/dev/citrusbyte/bleuacre/coverage. 1278 / 1686 LOC (75.8%) covered.
       11.89 real        10.73 user         0.79 sys
  49840128  maximum resident set size
         0  average shared memory size
         0  average unshared data size
         0  average unshared stack size
     12267  page reclaims
       154  page faults
         0  swaps
         2  block input operations
        31  block output operations
     39955  messages sent
     28099  messages received
         0  signals received
      1090  voluntary context switches
       203  involuntary context switches

thebench.rb

require "benchmark"
require "tempfile"

def fib n
  case n
  when 0 then 0
  when 1 then 1
  else
    fib(n-1) + fib(n-2)
  end
end

n = (ARGV[0] || 10).to_i
t = (ARGV[1] || 1000).to_i

Benchmark.bmbm(20) do |r|
  r.report("fib(#{n})") { fib(n) }
  r.report("#{t} tempfiles") do
    t.times do |i|
      tmp = Tempfile.new("bench")
      begin
        tmp.write i
      rescue
      ensure
        tmp.close
        tmp.unlink
      end
    end
  end
end

puts