Ruby Benchmarks

Details for Benchmarks at 2026-04-20 01:05:15 UTC

YJIT metrics from the ruby-bench suite using Ruby 7ecca26f8f.

Using the geomean of the headline benchmarks for x86 YJIT 4.1.0dev is
  • 98.3% faster than CRuby 4.1.0dev
  • 8.0% faster than YJIT 3.4.7
On railsbench it is
  • 117.2% faster than CRuby 4.1.0dev
  • 14.1% faster than YJIT 3.4.7
x86_64 runtime: 9 hours, 1 minutes
aarch64 runtime: 7 hours, 49 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 91 5 95 50 199 50 235
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 5 423 5 438 50 624 50 662
liquid-compile 5 418 5 487 50 580 50 760
liquid-render 5 173 5 172 50 432 50 454
lobsters 5 20 5 20 50 10 50 10
mail 5 195 5 199 50 255 50 286
psych-load 5 10 5 10 50 10 50 10
railsbench 5 10 5 10 50 10 50 10
rubocop 5 155 5 154 50 248 50 246
ruby-lsp 5 155 5 161 50 240 50 234
sequel 5 428 5 456 50 578 50 634
shipit 5 10 5 10 50 10 50 10
addressable-equality 5 26 5 27 50 12 50 12
addressable-getters 5 165 5 167 50 184 50 196
addressable-join 5 75 5 78 50 65 50 72
addressable-merge 5 161 5 152 50 223 50 220
addressable-new 5 352 5 339 50 519 50 524
addressable-normalize 5 53 5 53 50 60 50 59
addressable-parse 5 104 5 103 50 104 50 110
addressable-setters 5 184 5 176 50 233 50 232
addressable-to-s 5 165 5 166 50 182 50 194
binarytrees 5 82 5 85 50 136 50 143
blurhash 5 84 5 83 50 145 50 145
erubi 5 140 5 153 50 129 50 156
etanni 5 100 5 81 50 72 50 46
fannkuchredux 5 55 5 56 50 101 50 104
fluentd 5 56 5 63 50 20 50 30
gcbench 5 10 5 10 50 10 50 15
graphql 5 372 5 451 50 569 50 935
graphql-native 5 57 5 88 50 22 50 70
knucleotide 5 163 5 146 50 118 50 100
lee 5 23 5 29 50 10 50 15
matmul 5 53 5 57 50 87 50 94
nbody 5 250 5 281 50 663 50 705
nqueens 5 119 5 120 50 554 50 580
optcarrot 5 10 5 10 50 10 50 10
protoboeuf 5 176 5 178 50 697 50 786
protoboeuf-encode 5 200 5 196 50 808 50 815
rack 5 442 5 449 50 716 50 715
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 5 224 50 247 50 283
sudoku 5 48 5 49 50 155 50 159
tinygql 5 41 5 41 50 40 50 53
30k_ifelse 5 28 5 28 50 186 50 184
30k_methods 5 38 5 39 50 456 50 456
attr_accessor 5 157 5 179 50 1833 50 1888
cfunc_itself 5 348 5 324 50 1255 50 1259
fib 5 125 5 134 50 939 50 939
getivar 5 215 5 301 50 2315 50 2413
getivar-module 5 103 5 136 50 89 50 268
keyword_args 5 103 5 102 50 1240 50 1242
loops-times 5 23 5 25 50 63 50 63
object-new 5 268 5 471 50 297 50 1515
object-new-initialize 5 169 5 252 50 259 50 1023
object-new-no-escape 5 80 5 133 50 89 50 514
respond_to 5 139 5 130 50 3902 50 3901
ruby-xor 5 247 5 233 50 1305 50 1310
send_bmethod 5 118 5 115 50 5539 50 4526
send_cfunc_block 5 107 5 107 50 305 50 276
send_rubyfunc_block 5 196 5 210 50 1372 50 1376
setivar 5 359 5 472 50 4931 50 5038
setivar_object 5 341 5 349 50 761 50 670
setivar_young 5 342 5 349 50 808 50 690
str_concat 5 391 5 446 50 1203 50 1173
structaref 5 153 5 188 50 1802 50 1861
structaset 5 198 5 203 50 369 50 469
throw 5 1107 5 1391 50 1442 50 1769

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) 1555076 1346569 203 2686 0 0% 0 0 74.704077
chunky-png (click) 325097 307262 79 1376 1 0% 0 0 38.195453
erubi-rails (click) 1379265 1229810 268 3626 23 0% 0 0 93.598487
hexapdf (click) 1535580 1363149 594 15785 44 0% 0 0 426.690805
liquid-c (click) 566018 436042 114 2240 5 0% 0 0 58.440887
liquid-compile (click) 487323 435814 146 2774 2 0% 0 0 88.83456
liquid-render (click) 672279 633085 131 2963 8 0% 0 0 77.203724
lobsters (click) 8586797 7431608 3127 63796 122 0% 0 0 2035.839372
mail (click) 876352 850882 345 7738 40 0% 0 0 207.180935
psych-load (click) 292898 252665 61 833 2 0% 0 0 23.776758
railsbench (click) 3356488 2772863 1592 19740 104 0% 0 0 531.894335
rubocop (click) 5795650 4945155 3002 57257 127 0% 6 0 1636.488023
ruby-lsp (click) 1045210 938962 409 7472 47 0% 1 0 199.079628
sequel (click) 507818 483618 11 121 0 0% 0 0 5.410141
shipit (click) 6908444 5857617 3134 50325 147 0% 0 0 1593.984196
addressable-equality (click) 321147 271984 44 1380 1 0% 0 0 34.770529
addressable-getters (click) 282294 248492 26 869 0 0% 0 0 22.580446
addressable-join (click) 287227 231970 24 945 0 0% 0 0 27.071699
addressable-merge (click) 287494 259359 27 900 0 0% 0 0 24.333186
addressable-new (click) 262529 248859 21 569 0 0% 0 0 14.469107
addressable-normalize (click) 316840 291825 43 1327 1 0% 0 0 34.083325
addressable-parse (click) 285005 258554 26 886 0 0% 0 0 23.072977
addressable-setters (click) 262194 250590 20 582 0 0% 0 0 16.319622
addressable-to-s (click) 281740 247235 26 853 0 0% 0 0 21.850678
binarytrees (click) 7463 7718 6 76 0 0% 0 0 2.728099
blurhash (click) 52292 43311 27 605 0 0% 0 0 17.865832
erubi (click) 251950 200403 6 134 0 0% 0 0 3.94254
etanni (click) 32989 26478 8 114 0 0% 0 0 3.387691
fannkuchredux (click) 24735 32812 3 401 0 0% 0 0 10.853252
fluentd (click) 490802 405342 7 116 0 0% 0 0 3.591479
gcbench (click) 15808 8981 9 110 0 0% 0 0 3.57057
graphql (click) 414863 369827 73 1931 19 0% 0 0 52.455784
graphql-native (click) 357903 310565 39 532 0 0% 0 0 13.779277
knucleotide (click) 9939 10477 7 110 0 0% 0 0 4.679392
lee (click) 321778 272972 49 1099 0 0% 0 0 30.460559
matmul (click) 11103 4709 8 136 0 0% 0 0 4.099717
nbody (click) 14448 21176 6 251 0 0% 0 0 6.13755
nqueens (click) 22633 28819 5 389 0 0% 0 0 10.20329
optcarrot (click) 321739 302768 188 4597 34 0% 0 0 106.425879
protoboeuf (click) 169627 176954 12 2830 0 0% 0 0 71.698733
protoboeuf-encode (click) 243323 242439 14 1820 0 0% 0 0 43.225136
rack (click) 289977 234146 35 628 0 0% 0 0 16.968752
ruby-json (click) 19699 17751 8 206 0 0% 0 0 5.696682
rubyboy (click) 708976 666783 154 6873 42 0% 0 0 162.730103
rubykon (click) 148777 155950 138 2107 4 0% 0 0 55.001183
splay (click) 34953 22682 9 175 0 0% 0 0 5.159882
sudoku (click) 51776 65830 7 871 0 0% 0 0 22.671802
tinygql (click) 304902 274818 59 1032 5 0% 0 0 26.706924
30k_ifelse (click) 6265364 5037717 9260 76309 0 0% 0 0 1856.276385
30k_methods (click) 2278087 1643066 5780 19370 0 0% 0 0 472.475934
attr_accessor (click) 4349 7928 3 79 0 0% 0 0 2.110577
cfunc_itself (click) 5127 4155 4 53 0 0% 0 0 1.489149
fib (click) 2659 2995 3 30 0 0% 0 0 1.076016
getivar (click) 3789 6778 3 79 0 0% 0 0 1.921366
getivar-module (click) 6752 11953 4 142 0 0% 0 0 3.334115
keyword_args (click) 6332 4965 5 56 0 0% 0 0 1.79942
loops-times (click) 7093 8387 5 100 0 0% 0 0 2.9259
object-new (click) 2406 2818 2 36 0 0% 0 0 0.993605
object-new-initialize (click) 3015 3269 4 43 0 0% 0 0 1.285006
object-new-no-escape (click) 4540 5102 5 68 0 0% 0 0 1.966736
respond_to (click) 6451 6819 4 80 0 0% 0 0 2.103699
ruby-xor (click) 6037 9212 4 105 0 0% 0 0 2.81208
send_bmethod (click) 5508 5328 6 71 0 0% 0 0 1.778764
send_cfunc_block (click) 8981 6196 4 120 0 0% 0 0 2.262384
send_rubyfunc_block (click) 5649 4645 5 71 0 0% 0 0 1.734506
setivar (click) 2783 3726 3 46 0 0% 0 0 1.245277
setivar_object (click) 3402 3956 3 49 0 0% 0 0 1.401233
setivar_young (click) 4300 4867 4 63 0 0% 0 0 1.721446
str_concat (click) 5799 6969 6 82 0 0% 0 0 2.404647
structaref (click) 4407 9095 3 88 0 0% 0 0 2.338033
structaset (click) 4113 5834 3 70 0 0% 0 0 1.774288
throw (click) 5953 4624 5 53 0 0% 0 0 1.753192

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.