Fast_blank PR written in Crystal

kofno · June 23, 2016, 11:22am

AkitaOnRails has been playing with Crystal lately. Here’s a PR he’s made against the fast_blank gem that writes it in Crystal. Pretty neat.

github.com/SamSaffron/fast_blank

Crystal version

SamSaffron:master ← akitaonrails:crystal_version

opened 05:34PM - 22 Jun 16 UTC

akitaonrails

+625 -62

This gets the original C-based fast_blank and adds a condition to extconf.rb to …compile a Crystal version instead. Everything else (but a couple of specs) should work just the same. The goal: - to see if the Crystal version is competitive with the C version - if the numbers are competitive, it's should be clearly easier to write and maintain a Crystal version than C I ran the tests in my machine (Ubuntu 14.04 64 bits, Ruby 2.3.1, Crystal 0.18.2). I did both the C and Crystal benchmarks in the same machine to have a fair comparison. These are the numbers: ### C Version benchmark: ``` ================== Test String Length: 0 ================== Calculating ------------------------------------- Fast Blank 175.955k i/100ms Fast ActiveSupport 177.386k i/100ms Slow Blank 84.206k i/100ms New Slow Blank 173.732k i/100ms ------------------------------------------------- Fast Blank 26.134M (± 6.1%) i/s - 129.855M Fast ActiveSupport 25.632M (±10.0%) i/s - 125.767M Slow Blank 1.633M (± 6.6%) i/s - 8.168M New Slow Blank 19.162M (±11.6%) i/s - 94.336M Comparison: Fast Blank: 26134380.9 i/s Fast ActiveSupport: 25632474.8 i/s - 1.02x slower New Slow Blank: 19162018.3 i/s - 1.36x slower Slow Blank: 1632519.4 i/s - 16.01x slower ================== Test String Length: 6 ================== Calculating ------------------------------------- Fast Blank 126.348k i/100ms Fast ActiveSupport 148.406k i/100ms Slow Blank 64.285k i/100ms New Slow Blank 93.053k i/100ms ------------------------------------------------- Fast Blank 9.335M (± 6.6%) i/s - 46.370M Fast ActiveSupport 10.306M (± 4.3%) i/s - 51.497M Slow Blank 1.428M (± 6.9%) i/s - 7.136M New Slow Blank 2.153M (± 3.8%) i/s - 10.794M Comparison: Fast ActiveSupport: 10305820.1 i/s Fast Blank: 9334875.2 i/s - 1.10x slower New Slow Blank: 2153314.6 i/s - 4.79x slower Slow Blank: 1428318.5 i/s - 7.22x slower ================== Test String Length: 14 ================== Calculating ------------------------------------- Fast Blank 171.908k i/100ms Fast ActiveSupport 171.954k i/100ms Slow Blank 111.441k i/100ms New Slow Blank 82.109k i/100ms ------------------------------------------------- Fast Blank 17.847M (±12.4%) i/s - 87.673M Fast ActiveSupport 19.275M (± 8.5%) i/s - 95.434M Slow Blank 3.201M (± 5.0%) i/s - 16.048M New Slow Blank 1.610M (± 5.9%) i/s - 8.047M Comparison: Fast ActiveSupport: 19275233.9 i/s Fast Blank: 17847351.8 i/s - 1.08x slower Slow Blank: 3201263.8 i/s - 6.02x slower New Slow Blank: 1610193.5 i/s - 11.97x slower ================== Test String Length: 24 ================== Calculating ------------------------------------- Fast Blank 161.284k i/100ms Fast ActiveSupport 156.552k i/100ms Slow Blank 107.136k i/100ms New Slow Blank 75.888k i/100ms ------------------------------------------------- Fast Blank 11.639M (± 7.0%) i/s - 57.740M Fast ActiveSupport 11.571M (±10.8%) i/s - 56.985M Slow Blank 2.772M (± 5.5%) i/s - 13.821M New Slow Blank 1.489M (± 5.3%) i/s - 7.437M Comparison: Fast Blank: 11638605.2 i/s Fast ActiveSupport: 11571159.9 i/s - 1.01x slower Slow Blank: 2771977.6 i/s - 4.20x slower New Slow Blank: 1488644.4 i/s - 7.82x slower ================== Test String Length: 136 ================== Calculating ------------------------------------- Fast Blank 159.586k i/100ms Fast ActiveSupport 160.982k i/100ms Slow Blank 106.354k i/100ms New Slow Blank 77.455k i/100ms ------------------------------------------------- Fast Blank 11.774M (± 5.9%) i/s - 58.568M Fast ActiveSupport 11.237M (±12.9%) i/s - 55.056M Slow Blank 2.546M (±13.4%) i/s - 12.550M New Slow Blank 1.282M (±16.4%) i/s - 6.274M Comparison: Fast Blank: 11773722.8 i/s Fast ActiveSupport: 11237239.4 i/s - 1.05x slower Slow Blank: 2545953.1 i/s - 4.62x slower New Slow Blank: 1282478.2 i/s - 9.18x slower ``` ### Crystal version ``` ================== Test String Length: 0 ================== Calculating ------------------------------------- Fast Blank 93.058k i/100ms Fast ActiveSupport 90.831k i/100ms Slow Blank 85.016k i/100ms New Slow Blank 172.320k i/100ms ------------------------------------------------- Fast Blank 2.338M (± 8.0%) i/s - 11.632M Fast ActiveSupport 2.218M (±16.6%) i/s - 10.718M Slow Blank 1.559M (± 9.6%) i/s - 7.736M New Slow Blank 18.679M (±17.5%) i/s - 89.089M Comparison: New Slow Blank: 18678711.7 i/s Fast Blank: 2338327.0 i/s - 7.99x slower Fast ActiveSupport: 2218331.7 i/s - 8.42x slower Slow Blank: 1558660.2 i/s - 11.98x slower ================== Test String Length: 6 ================== Calculating ------------------------------------- Fast Blank 72.629k i/100ms Fast ActiveSupport 84.776k i/100ms Slow Blank 62.860k i/100ms New Slow Blank 79.570k i/100ms ------------------------------------------------- Fast Blank 1.831M (±13.5%) i/s - 9.006M Fast ActiveSupport 2.033M (± 7.4%) i/s - 10.173M Slow Blank 1.444M (± 4.6%) i/s - 7.229M New Slow Blank 2.150M (± 4.4%) i/s - 10.742M Comparison: New Slow Blank: 2150109.6 i/s Fast ActiveSupport: 2032594.7 i/s - 1.06x slower Fast Blank: 1831031.2 i/s - 1.17x slower Slow Blank: 1444152.9 i/s - 1.49x slower ================== Test String Length: 14 ================== Calculating ------------------------------------- Fast Blank 103.028k i/100ms Fast ActiveSupport 104.600k i/100ms Slow Blank 117.672k i/100ms New Slow Blank 83.105k i/100ms ------------------------------------------------- Fast Blank 2.909M (± 9.8%) i/s - 14.424M Fast ActiveSupport 3.004M (± 8.0%) i/s - 14.958M Slow Blank 3.241M (± 4.1%) i/s - 16.239M New Slow Blank 1.624M (± 5.5%) i/s - 8.144M Comparison: Slow Blank: 3241261.2 i/s Fast ActiveSupport: 3003942.4 i/s - 1.08x slower Fast Blank: 2908911.0 i/s - 1.11x slower New Slow Blank: 1624285.3 i/s - 2.00x slower ================== Test String Length: 24 ================== Calculating ------------------------------------- Fast Blank 97.126k i/100ms Fast ActiveSupport 96.868k i/100ms Slow Blank 92.417k i/100ms New Slow Blank 77.581k i/100ms ------------------------------------------------- Fast Blank 2.287M (±11.7%) i/s - 11.267M Fast ActiveSupport 2.507M (± 8.1%) i/s - 12.496M Slow Blank 2.798M (± 4.5%) i/s - 13.955M New Slow Blank 1.523M (± 4.7%) i/s - 7.603M Comparison: Slow Blank: 2798137.8 i/s Fast ActiveSupport: 2506713.8 i/s - 1.12x slower Fast Blank: 2287223.6 i/s - 1.22x slower New Slow Blank: 1522530.9 i/s - 1.84x slower ================== Test String Length: 136 ================== Calculating ------------------------------------- Fast Blank 85.992k i/100ms Fast ActiveSupport 83.403k i/100ms Slow Blank 107.259k i/100ms New Slow Blank 79.743k i/100ms ------------------------------------------------- Fast Blank 1.851M (±11.7%) i/s - 9.115M Fast ActiveSupport 1.955M (± 8.6%) i/s - 9.758M Slow Blank 2.761M (± 7.6%) i/s - 13.729M New Slow Blank 1.514M (± 8.3%) i/s - 7.496M Comparison: Slow Blank: 2760863.7 i/s Fast ActiveSupport: 1954917.9 i/s - 1.41x slower Fast Blank: 1850951.5 i/s - 1.49x slower New Slow Blank: 1513753.1 i/s - 1.82x slower ```