Ruby Benchmarks

Details for Benchmarks at 2026-07-10 00:59:37 UTC

YJIT metrics from the ruby-bench suite using Ruby b226c59108.

Using the geomean of the headline benchmarks for x86 YJIT 4.1.0dev is
  • 99.3% faster than CRuby 4.1.0dev
  • 9.4% faster than YJIT 3.4.7
On railsbench it is
  • 117.7% faster than CRuby 4.1.0dev
  • 16.0% faster than YJIT 3.4.7
x86_64 runtime: 9 hours, 13 minutes
aarch64 runtime: 7 hours, 58 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 50 199 50 225
chunky-png 5 32 5 32 50 34 50 28
erubi-rails 5 15 5 15 50 10 50 10
hexapdf 5 10 5 10 50 10 50 10
liquid-c 5 424 5 443 50 620 50 683
liquid-compile 5 417 5 514 50 580 50 840
liquid-render 5 173 5 174 50 431 50 472
lobsters 5 20 5 21 50 10 50 10
mail 5 193 5 207 50 254 50 305
psych-load 5 10 5 10 50 10 50 10
railsbench 5 10 5 10 50 10 50 10
rubocop 5 154 5 157 50 247 50 250
ruby-lsp 5 154 5 160 50 238 50 235
sequel 5 428 5 458 50 599 50 662
shipit 5 10 5 10 50 10 50 10
addressable-equality 5 26 5 29 50 12 50 18
addressable-getters 5 165 5 172 50 183 50 208
addressable-join 5 75 5 85 50 64 50 83
addressable-merge 5 160 5 160 50 223 50 238
addressable-new 5 352 5 342 50 511 50 535
addressable-normalize 5 52 5 57 50 60 50 70
addressable-parse 5 104 5 106 50 103 50 117
addressable-setters 5 185 5 186 50 234 50 251
addressable-to-s 5 164 5 171 50 182 50 207
binarytrees 5 82 5 88 50 136 50 161
blurhash 5 84 5 84 50 145 50 145
erubi 5 141 5 156 50 137 50 162
etanni 5 100 5 82 50 72 50 47
fannkuchredux 5 55 5 58 50 100 50 114
fluentd 5 62 5 61 50 27 50 27
gcbench 5 10 5 10 50 10 50 18
graphql 5 370 5 470 50 574 50 959
graphql-native 5 58 5 89 50 23 50 67
knucleotide 5 163 5 142 50 117 50 95
lee 5 23 5 31 50 10 50 19
matmul 5 53 5 53 50 88 50 100
nbody 5 250 5 249 50 663 50 634
nqueens 5 119 5 129 50 554 50 602
optcarrot 5 10 5 10 50 10 50 10
protoboeuf 5 172 5 186 50 690 50 817
protoboeuf-encode 5 201 5 205 50 801 50 748
rack 5 443 5 477 50 708 50 802
ruby-json 5 84 5 112 50 50 50 92
rubyboy 5 10 5 10 50 10 50 10
rubykon 5 21 5 22 50 10 50 10
splay 5 209 5 205 50 250 50 250
string_malloc_pressure 5 145 5 35 50 102 50 10
sudoku 5 48 5 49 50 155 50 166
tinygql 5 40 5 43 50 40 50 56
30k_ifelse 5 28 5 28 50 186 50 184
30k_methods 5 38 5 39 50 457 50 454
attr_accessor 5 156 5 177 50 1835 50 1878
cfunc_itself 5 348 5 321 50 1255 50 1258
fib 5 125 5 138 50 939 50 939
getivar 5 210 5 322 50 2305 50 2427
getivar-module 5 103 5 130 50 89 50 274
keyword_args 5 102 5 103 50 1240 50 1243
loops-times 5 23 5 27 50 63 50 63
object-new 5 268 5 474 50 295 50 1473
object-new-initialize 5 169 5 264 50 260 50 1004
object-new-no-escape 5 80 5 145 50 89 50 527
respond_to 5 139 5 125 50 3902 50 3903
ruby-xor 5 247 5 240 50 1305 50 1312
send_bmethod 5 118 5 113 50 5539 50 4526
send_cfunc_block 5 107 5 107 50 305 50 332
send_rubyfunc_block 5 196 5 203 50 1372 50 1375
send_rubyfunc_inline 5 30 5 36 50 297 50 297
setivar 5 359 5 455 50 4929 50 5024
setivar_object 5 341 5 313 50 765 50 598
setivar_young 5 341 5 313 50 809 50 612
str_concat 5 390 5 431 50 1201 50 1072
structaref 5 153 5 177 50 1800 50 1861
structaset 5 192 5 235 50 370 50 491
throw 5 1108 5 1337 50 1443 50 1720

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) 1563477 1311337 204 2672 0 0% 0 0 73.440291
chunky-png (click) 325946 292438 79 1376 1 0% 0 0 37.807259
erubi-rails (click) 1382118 1185997 268 3626 23 0% 0 0 94.224881
hexapdf (click) 1533200 1328751 594 15751 44 0% 0 0 427.159314
liquid-c (click) 568228 497109 114 2240 5 0% 0 0 59.054523
liquid-compile (click) 483177 465267 146 2673 2 0% 0 0 73.140305
liquid-render (click) 674590 669675 131 2963 8 0% 0 0 77.384514
lobsters (click) 8562330 7237103 3126 63495 125 0% 0 0 2017.938926
mail (click) 877091 829160 345 7739 40 0% 0 0 208.959466
psych-load (click) 289302 257885 60 829 2 0% 0 0 23.37129
railsbench (click) 3357409 2918460 1592 19740 105 0% 0 0 535.865257
rubocop (click) 5796671 4949496 3002 57264 129 0% 6 0 1724.119047
ruby-lsp (click) 1051760 883093 408 7438 47 0% 1 0 200.020523
sequel (click) 498536 469913 11 119 0 0% 0 0 4.237207
shipit (click) 6873295 5768887 3135 50147 147 0% 0 0 1583.708853
addressable-equality (click) 323010 249134 44 1381 1 0% 0 0 32.780956
addressable-getters (click) 286285 253293 26 863 0 0% 0 0 20.318357
addressable-join (click) 288785 249769 24 941 0 0% 0 0 22.417506
addressable-merge (click) 272839 208902 27 896 0 0% 0 0 20.88321
addressable-new (click) 266639 229176 21 563 0 0% 0 0 13.494832
addressable-normalize (click) 318127 236073 43 1327 1 0% 0 0 31.69068
addressable-parse (click) 273283 251993 26 880 0 0% 0 0 20.594408
addressable-setters (click) 266829 247836 20 582 0 0% 0 0 14.045829
addressable-to-s (click) 285888 260434 26 849 0 0% 0 0 19.920484
binarytrees (click) 7463 7718 6 76 0 0% 0 0 2.751785
blurhash (click) 52292 43311 27 605 0 0% 0 0 17.823853
erubi (click) 252789 234726 6 134 0 0% 0 0 3.829997
etanni (click) 32989 26478 8 114 0 0% 0 0 3.42241
fannkuchredux (click) 24735 32812 3 401 0 0% 0 0 10.892387
fluentd (click) 506518 415846 7 116 0 0% 0 0 3.579935
gcbench (click) 15640 8771 9 110 0 0% 0 0 3.437357
graphql (click) 403144 355490 74 1940 19 0% 0 0 53.107502
graphql-native (click) 358885 328640 39 532 0 0% 0 0 13.699289
knucleotide (click) 9939 10477 7 110 0 0% 0 0 4.699198
lee (click) 322939 299824 50 1102 0 0% 0 0 30.549759
matmul (click) 11103 4709 8 136 0 0% 0 0 4.098133
nbody (click) 14448 21176 6 251 0 0% 0 0 6.169765
nqueens (click) 22633 28819 5 389 0 0% 0 0 10.256109
optcarrot (click) 321739 302768 188 4597 34 0% 0 0 106.410476
protoboeuf (click) 169627 176954 12 2830 0 0% 0 0 71.808265
protoboeuf-encode (click) 242245 233890 14 1820 0 0% 0 0 42.697713
rack (click) 289104 257356 35 581 0 0% 0 0 14.530134
ruby-json (click) 19462 17420 8 206 0 0% 0 0 5.744114
rubyboy (click) 709070 610109 154 6871 42 0% 0 0 162.557813
rubykon (click) 146630 137068 137 2078 3 0% 0 0 54.345363
splay (click) 34617 22483 9 175 0 0% 0 0 5.477914
string_malloc_pressure (click) 4071 3932 6 49 0 0% 0 0 1.722339
sudoku (click) 51776 65830 7 871 0 0% 0 0 22.856
tinygql (click) 305123 267690 59 1026 5 0% 0 0 26.424925
30k_ifelse (click) 6265364 5037717 9260 76309 0 0% 0 0 1868.288841
30k_methods (click) 2278087 1643066 5780 19370 0 0% 0 0 475.577034
attr_accessor (click) 4349 7928 3 79 0 0% 0 0 2.087141
cfunc_itself (click) 5127 4155 4 53 0 0% 0 0 1.501111
fib (click) 2659 2995 3 30 0 0% 0 0 1.094531
getivar (click) 3789 6778 3 79 0 0% 0 0 1.913905
getivar-module (click) 6752 11953 4 142 0 0% 0 0 3.343484
keyword_args (click) 6332 4965 5 56 0 0% 0 0 1.781176
loops-times (click) 7093 8387 5 100 0 0% 0 0 2.940674
object-new (click) 2406 2818 2 36 0 0% 0 0 1.008439
object-new-initialize (click) 3015 3269 4 43 0 0% 0 0 1.294715
object-new-no-escape (click) 4295 4675 5 63 0 0% 0 0 1.74941
respond_to (click) 6451 6819 4 80 0 0% 0 0 2.137194
ruby-xor (click) 6037 9212 4 105 0 0% 0 0 2.795058
send_bmethod (click) 5508 5328 6 71 0 0% 0 0 1.807293
send_cfunc_block (click) 8981 6196 4 120 0 0% 0 0 2.293046
send_rubyfunc_block (click) 5649 4645 5 71 0 0% 0 0 1.740314
send_rubyfunc_inline (click) 5654 403 2 35 0 0% 0 0 1.058666
setivar (click) 2783 3726 3 46 0 0% 0 0 1.259371
setivar_object (click) 3402 3956 3 49 0 0% 0 0 1.381976
setivar_young (click) 4300 4867 4 63 0 0% 0 0 1.71818
str_concat (click) 5799 6969 6 82 0 0% 0 0 2.507146
structaref (click) 4407 9095 3 88 0 0% 0 0 2.350396
structaset (click) 4113 5834 3 70 0 0% 0 0 1.794369
throw (click) 5953 4624 5 53 0 0% 0 0 1.752533

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.