Ruby Benchmarks

Details for Benchmarks at 2026-06-23 01:18:02 UTC

YJIT metrics from the ruby-bench suite using Ruby 2768663a5e.

Using the geomean of the headline benchmarks for x86 YJIT 4.1.0dev is
  • 100.8% faster than CRuby 4.1.0dev
  • 10.3% faster than YJIT 3.4.7
On railsbench it is
  • 118.8% faster than CRuby 4.1.0dev
  • 16.5% faster than YJIT 3.4.7
x86_64 runtime: 8 hours, 58 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 50 200 50 240
chunky-png 5 31 5 30 50 33 50 26
erubi-rails 5 15 5 16 50 10 50 10
hexapdf 5 10 5 10 50 10 50 10
liquid-c 5 421 5 442 50 625 50 678
liquid-compile 5 421 5 509 50 574 50 836
liquid-render 5 174 5 171 50 429 50 470
lobsters 5 20 5 21 50 10 50 10
mail 5 193 5 207 50 254 50 304
psych-load 5 10 5 10 50 10 50 10
railsbench 5 10 5 10 50 10 50 10
rubocop 5 154 5 154 50 246 50 253
ruby-lsp 5 164 5 159 50 222 50 226
sequel 5 421 5 466 50 598 50 665
shipit 5 10 5 10 50 10 50 10
addressable-equality 5 26 5 29 50 12 50 19
addressable-getters 5 164 5 171 50 183 50 208
addressable-join 5 74 5 82 50 65 50 83
addressable-merge 5 161 5 159 50 223 50 237
addressable-new 5 352 5 343 50 521 50 540
addressable-normalize 5 53 5 58 50 60 50 72
addressable-parse 5 103 5 106 50 103 50 118
addressable-setters 5 186 5 188 50 233 50 260
addressable-to-s 5 164 5 173 50 182 50 206
binarytrees 5 82 5 87 50 136 50 145
blurhash 5 84 5 85 50 145 50 145
erubi 5 140 5 149 50 129 50 154
etanni 5 100 5 80 50 72 50 46
fannkuchredux 5 55 5 57 50 101 50 104
fluentd 5 62 5 64 50 31 50 26
gcbench 5 10 5 10 50 10 50 16
graphql 5 373 5 467 50 567 50 981
graphql-native 5 57 5 87 50 21 50 73
knucleotide 5 163 5 143 50 118 50 98
lee 5 23 5 29 50 10 50 17
matmul 5 53 5 54 50 88 50 93
nbody 5 250 5 246 50 662 50 628
nqueens 5 119 5 128 50 555 50 570
optcarrot 5 10 5 10 50 10 50 10
protoboeuf 5 175 5 181 50 698 50 811
protoboeuf-encode 5 201 5 194 50 805 50 784
rack 5 439 5 477 50 720 50 792
ruby-json 5 84 5 113 50 51 50 92
rubyboy 5 10 5 10 50 10 50 10
rubykon 5 21 5 22 50 10 50 10
splay 5 209 5 207 50 250 50 241
sudoku 5 48 5 49 50 155 50 157
tinygql 5 41 5 44 50 36 50 56
30k_ifelse 5 28 5 28 50 186 50 184
30k_methods 5 38 5 39 50 449 50 451
attr_accessor 5 156 5 174 50 1829 50 1871
cfunc_itself 5 348 5 309 50 1255 50 1258
fib 5 125 5 138 50 939 50 939
getivar 5 215 5 336 50 2305 50 2433
getivar-module 5 103 5 138 50 88 50 284
keyword_args 5 102 5 107 50 1240 50 1245
loops-times 5 23 5 26 50 63 50 61
object-new 5 268 5 479 50 297 50 1447
object-new-initialize 5 169 5 234 50 260 50 977
object-new-no-escape 5 80 5 136 50 89 50 497
respond_to 5 139 5 123 50 3904 50 3904
ruby-xor 5 247 5 235 50 1305 50 1309
send_bmethod 5 118 5 110 50 5539 50 4526
send_cfunc_block 5 107 5 105 50 305 50 315
send_rubyfunc_block 5 195 5 196 50 1372 50 1375
setivar 5 359 5 382 50 4930 50 4961
setivar_object 5 341 5 308 50 763 50 658
setivar_young 5 341 5 308 50 809 50 682
str_concat 5 388 5 426 50 1201 50 1046
structaref 5 153 5 178 50 1799 50 1856
structaset 5 198 5 221 50 369 50 489
throw 5 1110 5 1378 50 1442 50 1777

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) 1565252 1320589 203 2667 0 0% 0 0 74.009725
chunky-png (click) 325394 274948 79 1376 1 0% 0 0 37.92419
erubi-rails (click) 1389155 1201755 268 3626 23 0% 0 0 100.177273
hexapdf (click) 1534695 1281043 593 15767 44 0% 0 0 428.218333
liquid-c (click) 566780 436989 114 2240 5 0% 0 0 59.100506
liquid-compile (click) 482684 414960 146 2669 2 0% 0 0 73.471025
liquid-render (click) 671064 549866 131 2963 8 0% 0 0 77.562188
lobsters (click) 8549883 7078920 3123 63222 124 0% 0 0 2103.73553
mail (click) 877265 803520 345 7738 40 0% 0 0 208.675977
psych-load (click) 292707 277326 61 829 2 0% 0 0 23.707354
railsbench (click) 3362927 2807948 1592 19741 105 0% 0 0 534.852763
rubocop (click) 5809928 5110413 3002 57381 127 0% 6 0 1722.34146
ruby-lsp (click) 1053628 933885 409 7470 47 0% 1 0 201.920226
sequel (click) 511413 463454 11 119 0 0% 0 0 4.374579
shipit (click) 6860568 5820932 3134 50006 147 0% 0 0 1579.274782
addressable-equality (click) 325441 268294 44 1380 1 0% 0 0 33.211738
addressable-getters (click) 285844 235915 26 863 0 0% 0 0 20.152429
addressable-join (click) 290268 259136 24 941 0 0% 0 0 22.662829
addressable-merge (click) 291249 263350 27 896 0 0% 0 0 21.403722
addressable-new (click) 266080 228090 21 563 0 0% 0 0 13.517789
addressable-normalize (click) 320919 287990 43 1327 1 0% 0 0 31.615951
addressable-parse (click) 287606 260705 26 880 0 0% 0 0 20.99504
addressable-setters (click) 266275 230371 20 582 0 0% 0 0 13.999754
addressable-to-s (click) 284502 257789 26 849 0 0% 0 0 19.959039
binarytrees (click) 7463 7718 6 76 0 0% 0 0 2.750246
blurhash (click) 52292 43311 27 605 0 0% 0 0 17.78563
erubi (click) 249255 237905 6 134 0 0% 0 0 3.805718
etanni (click) 32989 26478 8 114 0 0% 0 0 3.442749
fannkuchredux (click) 24735 32812 3 401 0 0% 0 0 10.80802
fluentd (click) 519223 455058 7 116 0 0% 0 0 3.661916
gcbench (click) 15640 8771 9 110 0 0% 0 0 3.348737
graphql (click) 418351 373967 74 1940 19 0% 0 0 52.995616
graphql-native (click) 361705 347720 39 532 0 0% 0 0 13.753396
knucleotide (click) 9939 10477 7 110 0 0% 0 0 4.655145
lee (click) 319358 270226 50 1102 0 0% 0 0 30.571313
matmul (click) 11103 4709 8 136 0 0% 0 0 4.114801
nbody (click) 14448 21176 6 251 0 0% 0 0 6.144198
nqueens (click) 22633 28819 5 389 0 0% 0 0 10.256877
optcarrot (click) 321739 302768 188 4597 34 0% 0 0 106.067039
protoboeuf (click) 169627 176954 12 2830 0 0% 0 0 71.852062
protoboeuf-encode (click) 243323 242439 14 1820 0 0% 0 0 43.073567
rack (click) 288557 248063 35 581 0 0% 0 0 14.603463
ruby-json (click) 19699 17751 8 206 0 0% 0 0 5.693672
rubyboy (click) 708577 641824 154 6871 42 0% 0 0 163.717944
rubykon (click) 147788 154811 138 2094 4 0% 0 0 54.699121
splay (click) 34617 22483 9 175 0 0% 0 0 5.270855
sudoku (click) 51776 65830 7 871 0 0% 0 0 22.846925
tinygql (click) 304670 282971 59 1026 5 0% 0 0 26.457239
30k_ifelse (click) 6265364 5037717 9260 76309 0 0% 0 0 1862.489266
30k_methods (click) 2278087 1643066 5780 19370 0 0% 0 0 473.983916
attr_accessor (click) 4349 7928 3 79 0 0% 0 0 2.110234
cfunc_itself (click) 5127 4155 4 53 0 0% 0 0 1.511504
fib (click) 2659 2995 3 30 0 0% 0 0 1.0764
getivar (click) 3789 6778 3 79 0 0% 0 0 1.923637
getivar-module (click) 6752 11953 4 142 0 0% 0 0 3.324339
keyword_args (click) 6332 4965 5 56 0 0% 0 0 1.778761
loops-times (click) 7093 8387 5 100 0 0% 0 0 2.941138
object-new (click) 2406 2818 2 36 0 0% 0 0 0.998497
object-new-initialize (click) 3015 3269 4 43 0 0% 0 0 1.267411
object-new-no-escape (click) 4295 4675 5 63 0 0% 0 0 1.73623
respond_to (click) 6451 6819 4 80 0 0% 0 0 2.149018
ruby-xor (click) 6037 9212 4 105 0 0% 0 0 2.773519
send_bmethod (click) 5508 5328 6 71 0 0% 0 0 1.801349
send_cfunc_block (click) 8981 6196 4 120 0 0% 0 0 2.281031
send_rubyfunc_block (click) 5649 4645 5 71 0 0% 0 0 1.727955
setivar (click) 2783 3726 3 46 0 0% 0 0 1.278093
setivar_object (click) 3402 3956 3 49 0 0% 0 0 1.438441
setivar_young (click) 4300 4867 4 63 0 0% 0 0 1.717289
str_concat (click) 5799 6969 6 82 0 0% 0 0 2.463034
structaref (click) 4407 9095 3 88 0 0% 0 0 2.342907
structaset (click) 4113 5834 3 70 0 0% 0 0 1.79354
throw (click) 5953 4624 5 53 0 0% 0 0 1.777278

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.