Ruby Benchmarks

Details for Benchmarks at 2026-04-09 00:50:30 UTC

YJIT metrics from the ruby-bench suite using Ruby 6ccabf1e82.

Using the geomean of the headline benchmarks for x86 YJIT 4.1.0dev is
  • 96.0% faster than CRuby 4.1.0dev
  • 5.5% faster than YJIT 3.4.7
On railsbench it is
  • 119.8% faster than CRuby 4.1.0dev
  • 13.4% faster than YJIT 3.4.7
x86_64 runtime: 9 hours, 3 minutes
aarch64 runtime: 7 hours, 51 minutes

Performance on Headline Benchmarks

Speed of each Ruby implementation relative to the baseline CRuby measurement. Higher is better.

Memory Usage on Headline Benchmarks

Memory usage of each Ruby implementation relative to the baseline CRuby measurement. Lower is better.

Performance on Other Benchmarks

Speed of each Ruby implementation relative to the baseline CRuby measurement. Higher is better.

Memory Usage on Other Benchmarks

Memory usage of each Ruby implementation relative to the baseline CRuby measurement. Lower is better.

Performance on MicroBenchmarks

Speed of each Ruby implementation relative to the baseline CRuby measurement. Higher is better.

Memory Usage on MicroBenchmarks

Memory usage of each Ruby implementation relative to the baseline CRuby measurement. Lower is better.

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Benchmarks Speed Details

Benchmark Memory Usage Details

Number of Iterations and Warmups Tested

bench CRuby 3.4.7 warmups CRuby 3.4.7 iters CRuby 4.1.0dev warmups CRuby 4.1.0dev iters YJIT 3.4.7 warmups YJIT 3.4.7 iters YJIT 4.1.0dev warmups YJIT 4.1.0dev iters
activerecord 5 90 5 96 50 200 50 230
chunky-png 5 32 5 31 50 34 50 27
erubi-rails 5 15 5 16 50 10 50 10
hexapdf 5 10 5 10 50 10 50 10
liquid-c 5 421 5 428 50 622 50 632
liquid-compile 5 404 5 464 50 583 50 704
liquid-render 5 171 5 171 50 431 50 442
lobsters 5 20 5 20 50 10 50 10
mail 5 194 5 199 50 254 50 285
psych-load 5 10 5 10 50 10 50 10
railsbench 5 10 5 10 50 10 50 10
rubocop 5 154 5 156 50 247 50 252
ruby-lsp 5 159 5 165 50 239 50 236
sequel 5 427 5 441 50 592 50 602
shipit 5 10 5 10 50 10 50 10
addressable-equality 5 27 5 27 50 12 50 12
addressable-getters 5 164 5 165 50 184 50 194
addressable-join 5 75 5 78 50 66 50 72
addressable-merge 5 161 5 151 50 223 50 218
addressable-new 5 349 5 338 50 519 50 517
addressable-normalize 5 53 5 54 50 60 50 61
addressable-parse 5 104 5 102 50 104 50 108
addressable-setters 5 186 5 175 50 233 50 229
addressable-to-s 5 164 5 166 50 182 50 193
binarytrees 5 82 5 85 50 136 50 161
blurhash 5 84 5 84 50 145 50 145
erubi 5 138 5 149 50 137 50 153
etanni 5 100 5 78 50 73 50 45
fannkuchredux 5 55 5 57 50 100 50 106
fluentd 5 62 5 61 50 20 50 36
gcbench 5 10 5 10 50 10 50 16
graphql 5 370 5 448 50 563 50 957
graphql-native 5 57 5 84 50 21 50 62
knucleotide 5 163 5 143 50 116 50 96
lee 5 23 5 30 50 10 50 15
matmul 5 53 5 57 50 87 50 96
nbody 5 250 5 282 50 662 50 706
nqueens 5 119 5 120 50 555 50 577
optcarrot 5 10 5 10 50 10 50 10
protoboeuf 5 176 5 181 50 697 50 802
protoboeuf-encode 5 199 5 196 50 803 50 823
rack 5 444 5 438 50 713 50 695
ruby-json 5 84 5 105 50 50 50 82
rubyboy 5 10 5 10 50 10 50 10
rubykon 5 21 5 22 50 10 50 10
splay 5 209 5 223 50 250 50 284
sudoku 5 48 5 49 50 155 50 159
tinygql 5 42 5 41 50 36 50 51
30k_ifelse 5 28 5 28 50 185 50 185
30k_methods 5 38 5 39 50 457 50 455
attr_accessor 5 157 5 186 50 1833 50 1888
cfunc_itself 5 347 5 327 50 1255 50 1259
fib 5 125 5 131 50 939 50 939
getivar 5 210 5 301 50 2311 50 2413
getivar-module 5 103 5 136 50 88 50 247
keyword_args 5 102 5 105 50 1239 50 1243
loops-times 5 23 5 25 50 63 50 62
object-new 5 268 5 470 50 297 50 1466
object-new-initialize 5 169 5 251 50 259 50 925
object-new-no-escape 5 81 5 132 50 89 50 496
respond_to 5 139 5 130 50 3897 50 3899
ruby-xor 5 247 5 234 50 1305 50 1293
send_bmethod 5 118 5 116 50 5539 50 4525
send_cfunc_block 5 106 5 107 50 305 50 304
send_rubyfunc_block 5 196 5 209 50 1371 50 1376
setivar 5 359 5 474 50 4930 50 5039
setivar_object 5 341 5 352 50 759 50 668
setivar_young 5 342 5 352 50 809 50 696
str_concat 5 391 5 444 50 1202 50 1171
structaref 5 153 5 188 50 1799 50 1876
structaset 5 198 5 232 50 370 50 477
throw 5 1108 5 1379 50 1442 50 1758

Different Ruby configurations want different amounts of warmup. With no JIT, CRuby needs hardly any. YJIT warms up fairly quickly, while some JITs may start slower as they do more advanced compilation.

Benchmark YJIT Stats

Hover your cursor over the benchmark names for descriptions of each benchmark.

bench Exit Report Inline Outlined Comp iSeqs Comp Blocks Inval Inval Ratio Bind Alloc Bind Set Const Bumps Compile Time MS
activerecord (click) 1555240 1318187 203 2654 0 0% 0 0 73.315932
chunky-png (click) 323318 304927 79 1376 1 0% 0 0 38.088842
erubi-rails (click) 1384845 1277790 268 3646 23 0% 0 0 100.76119
hexapdf (click) 1531624 1384508 594 15735 44 0% 0 0 427.695134
liquid-c (click) 562588 499618 114 2241 5 0% 0 0 58.372308
liquid-compile (click) 485396 443046 146 2728 2 0% 0 0 78.3271
liquid-render (click) 668906 614337 131 2959 8 0% 0 0 77.249248
lobsters (click) 8602504 7196762 3126 63983 122 0% 0 0 2058.555306
mail (click) 873554 864234 345 7728 40 0% 0 0 208.55483
psych-load (click) 292264 219383 61 831 2 0% 0 0 23.175667
railsbench (click) 3358059 2997322 1592 19789 104 0% 0 0 535.489651
rubocop (click) 5783707 4934155 3002 57100 128 0% 6 0 1720.731367
ruby-lsp (click) 1045807 891386 409 7462 47 0% 1 0 199.590894
sequel (click) 507405 434189 11 119 0 0% 0 0 3.875085
shipit (click) 6902626 5862338 3134 50394 147 0% 0 0 1622.200043
addressable-equality (click) 322640 281616 44 1389 1 0% 0 0 33.612026
addressable-getters (click) 283564 233764 26 897 0 0% 0 0 22.101442
addressable-join (click) 283685 268542 24 945 0 0% 0 0 23.336518
addressable-merge (click) 288888 236233 27 900 0 0% 0 0 22.550819
addressable-new (click) 260755 213756 21 569 0 0% 0 0 14.111481
addressable-normalize (click) 319105 278000 43 1362 1 0% 0 0 32.375127
addressable-parse (click) 285231 234399 26 894 0 0% 0 0 22.04853
addressable-setters (click) 262714 202002 20 584 0 0% 0 0 15.260113
addressable-to-s (click) 281328 246893 26 849 0 0% 0 0 20.921354
binarytrees (click) 7463 7718 6 76 0 0% 0 0 2.778254
blurhash (click) 52292 43311 27 605 0 0% 0 0 17.806629
erubi (click) 251902 200355 6 134 0 0% 0 0 3.900596
etanni (click) 32981 26478 8 114 0 0% 0 0 3.398373
fannkuchredux (click) 24735 32812 3 401 0 0% 0 0 10.819625
fluentd (click) 491909 382433 7 116 0 0% 0 0 3.681612
gcbench (click) 15808 8981 9 110 0 0% 0 0 3.432344
graphql (click) 414856 361870 73 1926 19 0% 0 0 52.967967
graphql-native (click) 358104 335342 39 532 0 0% 0 0 13.751162
knucleotide (click) 9939 10477 7 110 0 0% 0 0 4.650976
lee (click) 321659 313816 49 1099 0 0% 0 0 30.634355
matmul (click) 11103 4709 8 136 0 0% 0 0 4.121784
nbody (click) 14448 21176 6 251 0 0% 0 0 6.088495
nqueens (click) 22633 28819 5 389 0 0% 0 0 10.27289
optcarrot (click) 319416 277986 188 4589 34 0% 0 0 105.965551
protoboeuf (click) 169627 176954 12 2830 0 0% 0 0 71.71306
protoboeuf-encode (click) 243323 242439 14 1820 0 0% 0 0 43.296753
rack (click) 294887 280177 35 705 0 0% 0 0 18.091986
ruby-json (click) 19699 17751 8 206 0 0% 0 0 5.662564
rubyboy (click) 708691 617508 154 6875 42 0% 0 0 165.351347
rubykon (click) 148777 155950 138 2107 4 0% 0 0 55.005433
splay (click) 34953 22682 9 175 0 0% 0 0 5.261046
sudoku (click) 51776 65830 7 871 0 0% 0 0 22.748659
tinygql (click) 306693 293065 59 1037 5 0% 0 0 27.254784
30k_ifelse (click) 6265364 5037717 9260 76309 0 0% 0 0 1890.485337
30k_methods (click) 2278087 1643066 5780 19370 0 0% 0 0 476.836528
attr_accessor (click) 4349 7928 3 79 0 0% 0 0 2.095028
cfunc_itself (click) 5127 4155 4 53 0 0% 0 0 1.480105
fib (click) 2659 2995 3 30 0 0% 0 0 1.105365
getivar (click) 3789 6778 3 79 0 0% 0 0 1.90845
getivar-module (click) 6752 11953 4 142 0 0% 0 0 3.338156
keyword_args (click) 6332 4965 5 56 0 0% 0 0 1.765264
loops-times (click) 7093 8387 5 100 0 0% 0 0 2.9163
object-new (click) 2406 2818 2 36 0 0% 0 0 0.971025
object-new-initialize (click) 3015 3269 4 43 0 0% 0 0 1.279625
object-new-no-escape (click) 4540 5102 5 68 0 0% 0 0 1.92834
respond_to (click) 6451 6819 4 80 0 0% 0 0 2.13222
ruby-xor (click) 6037 9212 4 105 0 0% 0 0 2.785674
send_bmethod (click) 5508 5328 6 71 0 0% 0 0 1.808021
send_cfunc_block (click) 8981 6196 4 120 0 0% 0 0 2.289214
send_rubyfunc_block (click) 5649 4645 5 71 0 0% 0 0 1.749474
setivar (click) 2783 3726 3 46 0 0% 0 0 1.247032
setivar_object (click) 3402 3956 3 49 0 0% 0 0 1.408352
setivar_young (click) 4300 4867 4 63 0 0% 0 0 1.666842
str_concat (click) 5799 6969 6 82 0 0% 0 0 2.417967
structaref (click) 4407 9095 3 88 0 0% 0 0 2.366575
structaset (click) 4113 5834 3 70 0 0% 0 0 1.809439
throw (click) 5953 4624 5 53 0 0% 0 0 1.77362

YJIT stats correspond to the YJIT stats exit report.

Note: currently, all stats are collected on x86_64, not ARM.

Raw JSON data files

All graphs and table data in this page comes from processing these data files, which come from benchmark runs.