YJIT Benchmarks

Details for Benchmarks at 2025-06-06 03:54:33 UTC

YJIT metrics from the yjit-bench suite using Ruby e093c3145a.

Using the geomean of the headline benchmarks for x86 YJIT 3.5.0dev is
  • 88.9% faster than CRuby 3.5.0dev
  • 4.6% faster than YJIT 3.3.6
On railsbench it is
  • 99.6% faster than CRuby 3.5.0dev
  • 7.1% faster than YJIT 3.3.6
x86_64 runtime: 4 hours, 26 minutes
aarch64 runtime: 3 hours, 47 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 3.3.6 warmups CRuby 3.3.6 iters CRuby 3.5.0dev warmups CRuby 3.5.0dev iters YJIT 3.3.6 warmups YJIT 3.3.6 iters YJIT 3.5.0dev warmups YJIT 3.5.0dev iters
activerecord 5 83 5 82 50 157 50 167
chunky-png 5 31 5 32 50 14 50 24
erubi-rails 5 16 5 14 50 10 50 10
hexapdf 5 10 5 10 50 10 50 10
liquid-c 5 420 5 424 50 586 50 597
liquid-compile 5 411 5 462 50 540 50 700
liquid-render 5 168 5 170 50 403 50 436
lobsters 5 19 5 19 50 10 50 10
mail 5 194 5 178 50 250 50 203
psych-load 5 10 5 10 50 10 50 10
railsbench 5 10 5 10 50 10 50 10
rubocop 5 157 5 157 50 251 50 262
ruby-lsp 5 159 5 157 50 257 50 250
sequel 5 428 5 425 50 597 50 583
binarytrees 5 84 5 80 50 146 50 120
blurhash 5 82 5 84 50 127 50 145
erubi 5 124 5 116 50 97 50 153
etanni 5 90 5 99 50 53 50 69
fannkuchredux 5 52 5 58 50 97 50 103
fluentd 5 63 5 62 50 25 50 25
graphql 5 85 5 85 50 58 50 57
graphql-native 5 39 5 52 50 10 50 14
lee 5 23 5 23 50 10 50 10
matmul 5 51 5 49 50 88 50 91
nbody 5 249 5 235 50 585 50 689
nqueens 5 120 5 126 50 75 50 522
optcarrot 5 10 5 10 50 10 50 10
protoboeuf 5 173 5 179 50 620 50 741
protoboeuf-encode 5 179 5 190 50 327 50 812
rack 5 569 5 623 50 961 50 1035
ruby-json 5 84 5 82 50 50 50 49
rubyboy 5 10 5 10 50 10 50 10
rubykon 5 21 5 21 50 10 50 10
sudoku 5 48 5 51 50 163 50 150
tinygql 5 36 5 37 50 22 50 33
30k_ifelse 5 28 5 27 50 215 50 184
30k_methods 5 39 5 38 50 474 50 467
cfunc_itself 5 357 5 374 50 1147 50 1258
fib 5 126 5 139 50 902 50 931
getivar 5 213 5 279 50 2253 50 2379
keyword_args 5 104 5 109 50 1041 50 1243
loops-times 5 24 5 25 50 48 50 56
object-new 5 323 5 360 50 406 50 603
respond_to 5 133 5 131 50 3256 50 3898
ruby-xor 5 245 5 252 50 800 50 1293
setivar 5 361 5 430 50 3088 50 5001
setivar_object 5 354 5 412 50 671 50 595
setivar_young 5 368 5 412 50 702 50 609
str_concat 5 397 5 466 50 979 50 1184
throw 5 1272 5 1280 50 1736 50 1695

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) 1522242 1250453 206 2590 0 0% 0 0 76.04518
chunky-png (click) 336436 327166 74 1322 1 0% 0 0 38.40215
erubi-rails (click) 1956119 1739213 262 3609 21 0% 0 0 100.039263
hexapdf (click) 1490464 1359723 593 15611 40 0% 0 0 454.323132
liquid-c (click) 530260 525487 114 2217 5 0% 0 0 63.018087
liquid-compile (click) 422043 417711 146 2725 2 0% 0 0 80.726998
liquid-render (click) 640300 585794 131 2933 8 0% 0 0 80.620914
lobsters (click) 8518574 7294487 3172 63722 118 0% 0 0 2181.934526
mail (click) 820360 778715 342 7232 40 0% 0 0 206.062978
psych-load (click) 290471 272837 61 822 3 0% 0 0 24.360365
railsbench (click) 3378216 2975554 1653 20198 56 0% 0 0 585.358438
rubocop (click) 5922467 4917354 2885 61737 114 0% 4 0 1817.610761
ruby-lsp (click) 851577 724952 305 5956 29 0% 0 0 164.278451
sequel (click) 508075 413681 11 114 0 0% 0 0 3.997263
binarytrees (click) 7273 6911 6 64 0 0% 0 0 2.629806
blurhash (click) 52289 51444 27 603 0 0% 0 0 18.265511
erubi (click) 272047 220202 5 125 0 0% 0 0 3.95443
etanni (click) 30806 32125 8 108 0 0% 0 0 3.518017
fannkuchredux (click) 24746 40953 3 399 0 0% 0 0 11.135909
fluentd (click) 401422 328643 7 115 0 0% 0 0 3.749402
graphql (click) 425188 332615 66 1035 0 0% 0 0 28.271085
graphql-native (click) 413375 363507 37 399 0 0% 0 0 11.21556
lee (click) 322399 312831 45 1012 0 0% 0 0 30.73111
matmul (click) 11125 4603 8 132 0 0% 0 0 4.248701
nbody (click) 13890 20235 6 238 0 0% 0 0 5.886358
nqueens (click) 22652 36960 5 387 0 0% 0 0 10.364666
optcarrot (click) 325946 290644 188 4740 34 0% 0 0 116.128033
protoboeuf (click) 170142 177773 12 2836 0 0% 0 0 76.528831
protoboeuf-encode (click) 243031 283791 14 1815 0 0% 0 0 47.317164
rack (click) 246524 226495 31 496 0 0% 0 0 13.961987
ruby-json (click) 20664 18692 8 204 0 0% 0 0 5.868032
rubyboy (click) 733861 693338 177 6962 40 0% 0 0 178.28985
rubykon (click) 146417 162602 137 2076 3 0% 0 0 57.471648
sudoku (click) 52157 66291 7 871 0 0% 0 0 24.17183
tinygql (click) 317412 269486 58 977 5 0% 0 0 27.560523
30k_ifelse (click) 6219958 5057296 9259 75432 0 0% 0 0 1975.361337
30k_methods (click) 2234566 1592952 5778 19357 0 0% 0 0 492.320342
cfunc_itself (click) 5127 4155 4 53 0 0% 0 0 1.455511
fib (click) 2659 2995 3 30 0 0% 0 0 1.084666
getivar (click) 3812 6802 3 78 0 0% 0 0 1.908197
keyword_args (click) 6332 4965 5 56 0 0% 0 0 1.789254
loops-times (click) 6972 8013 5 93 0 0% 0 0 2.754052
object-new (click) 2406 2818 2 36 0 0% 0 0 1.099806
respond_to (click) 6451 6819 4 80 0 0% 0 0 2.099851
ruby-xor (click) 5876 8690 4 100 0 0% 0 0 2.727406
setivar (click) 2783 3726 3 46 0 0% 0 0 1.276122
setivar_object (click) 3402 3956 3 49 0 0% 0 0 1.409988
setivar_young (click) 4297 4867 4 63 0 0% 0 0 1.67294
str_concat (click) 5799 6969 6 82 0 0% 0 0 2.508818
throw (click) 5953 4624 5 53 0 0% 0 0 1.817824

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.