YJIT Benchmarks

Details for Benchmarks at 2025-04-07 03:48:11 UTC

YJIT metrics from the yjit-bench suite using Ruby 3a7b9ca93b.

Using the geomean of the headline benchmarks for x86 YJIT 3.5.0dev is
  • 88.3% faster than CRuby 3.5.0dev
  • 7.4% faster than YJIT 3.3.6
On railsbench it is
  • 95.4% faster than CRuby 3.5.0dev
  • 6.0% faster than YJIT 3.3.6
x86_64 runtime: 4 hours, 19 minutes
aarch64 runtime: 3 hours, 42 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 85 50 150 50 165
chunky-png 5 32 5 34 50 15 50 34
erubi-rails 5 15 5 16 50 10 50 10
hexapdf 5 10 5 10 50 10 50 10
liquid-c 5 408 5 432 50 572 50 634
liquid-compile 5 427 5 427 50 539 50 566
liquid-render 5 171 5 170 50 405 50 444
lobsters 5 19 5 19 50 10 50 10
mail 5 195 5 198 50 241 50 255
psych-load 5 10 5 10 50 10 50 10
railsbench 5 10 5 10 50 10 50 10
rubocop 5 156 5 158 50 250 50 268
ruby-lsp 5 157 5 159 50 249 50 259
sequel 5 418 5 416 50 573 50 571
binarytrees 5 84 5 86 50 149 50 142
blurhash 5 82 5 88 50 127 50 145
erubi 5 117 5 147 50 89 50 151
etanni 5 90 5 103 50 54 50 73
fannkuchredux 5 52 5 58 50 99 50 107
fluentd 5 64 5 64 50 26 50 29
graphql 5 84 5 88 50 56 50 59
graphql-native 5 49 5 52 50 10 50 13
lee 5 23 5 23 50 10 50 10
matmul 5 50 5 54 50 85 50 94
nbody 5 248 5 281 50 577 50 648
nqueens 5 120 5 130 50 71 50 565
optcarrot 5 10 5 10 50 10 50 10
protoboeuf 5 175 5 186 50 620 50 728
protoboeuf-encode 5 178 5 207 50 328 50 848
rack 5 580 5 633 50 952 50 1052
ruby-json 5 84 5 84 50 50 50 50
rubyboy 5 10 5 10 50 10 50 10
rubykon 5 21 5 22 50 10 50 10
sudoku 5 48 5 51 50 164 50 161
tinygql 5 36 5 38 50 22 50 29
30k_ifelse 5 28 5 28 50 214 50 205
30k_methods 5 38 5 38 50 481 50 473
cfunc_itself 5 346 5 346 50 1147 50 1258
fib 5 127 5 118 50 910 50 933
getivar 5 207 5 347 50 2240 50 2767
keyword_args 5 107 5 109 50 1042 50 1243
loops-times 5 24 5 27 50 48 50 65
object-new 5 322 5 328 50 406 50 389
respond_to 5 134 5 142 50 3258 50 3981
ruby-xor 5 224 5 264 50 803 50 1382
setivar 5 358 5 542 50 3191 50 5877
setivar_object 5 355 5 462 50 699 50 800
setivar_young 5 365 5 462 50 745 50 806
str_concat 5 400 5 453 50 968 50 1224
throw 5 1264 5 1251 50 1765 50 1740

Different Ruby configurations want different amounts of warmup. With no JIT, CRuby needs hardly any. YJIT and MJIT 3.0 both warm up quite quickly, while MJIT in 3.1 often slows down for a time as it compiles, after an unpredictable delay.

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) 1427739 1233829 209 2202 0 0% 0 0 64.310961
chunky-png (click) 319220 250505 84 1124 1 0% 0 0 33.6178
erubi-rails (click) 1909589 1674671 259 2993 19 0% 0 0 88.226321
hexapdf (click) 1437754 1244416 595 13139 40 0% 0 0 380.970331
liquid-c (click) 479529 424207 115 1744 5 0% 0 0 49.471654
liquid-compile (click) 404139 371519 146 2083 2 0% 0 0 64.243292
liquid-render (click) 607653 515873 132 2310 8 0% 0 0 65.278117
lobsters (click) 8133696 6764970 3159 52757 104 0% 0 0 1807.173112
mail (click) 763305 689633 342 5317 14 0% 0 0 154.154084
psych-load (click) 248300 226173 61 615 3 0% 0 0 19.298176
railsbench (click) 3236175 2825844 1645 16212 52 0% 0 0 472.60702
rubocop (click) 5688879 4956622 2887 50504 110 0% 4 0 1488.83137
ruby-lsp (click) 812302 719380 305 4727 24 0% 0 0 134.941712
sequel (click) 443849 391176 11 94 0 0% 0 0 3.525223
binarytrees (click) 7093 6143 6 52 0 0% 0 0 2.269603
blurhash (click) 50118 50863 27 438 0 0% 0 0 14.207442
erubi (click) 223160 206398 5 97 0 0% 0 0 3.188082
etanni (click) 30101 29597 8 88 0 0% 0 0 3.021178
fannkuchredux (click) 23031 13626 3 249 0 0% 0 0 7.392923
fluentd (click) 364305 300719 7 93 0 0% 0 0 3.278387
graphql (click) 426234 325592 66 676 0 0% 0 0 21.00368
graphql-native (click) 388920 343269 37 255 0 0% 0 0 8.761782
lee (click) 302354 223745 45 749 0 0% 0 0 23.691962
matmul (click) 10657 3512 8 109 0 0% 0 0 3.580802
nbody (click) 13050 17086 6 172 0 0% 0 0 4.403774
nqueens (click) 20163 27348 5 239 0 0% 0 0 6.888547
optcarrot (click) 318856 234467 188 4395 34 0% 0 0 103.687942
protoboeuf (click) 150678 129601 12 1479 0 0% 0 0 42.74462
protoboeuf-encode (click) 221062 212146 14 1220 0 0% 0 0 31.508207
rack (click) 262804 225063 32 385 0 0% 0 0 10.297668
ruby-json (click) 23859 20840 8 178 0 0% 0 0 5.104118
rubyboy (click) 686568 602131 177 5803 40 0% 0 0 144.425677
rubykon (click) 133501 111856 137 1482 3 0% 0 0 42.581685
sudoku (click) 45311 40871 7 516 0 0% 0 0 15.537708
tinygql (click) 267964 219047 58 762 5 0% 0 0 22.194905
30k_ifelse (click) 5658774 5284843 9259 51667 0 0% 0 0 1417.250575
30k_methods (click) 2234569 1592883 5778 19351 0 0% 0 0 452.883716
cfunc_itself (click) 5130 4086 4 47 0 0% 0 0 1.325403
fib (click) 2599 2861 3 26 0 0% 0 0 0.9818
getivar (click) 3501 4713 3 51 0 0% 0 0 1.340052
keyword_args (click) 6320 4813 5 49 0 0% 0 0 1.622739
loops-times (click) 6688 7405 5 70 0 0% 0 0 2.250069
object-new (click) 1918 2093 2 22 0 0% 0 0 0.820663
respond_to (click) 5868 6227 4 62 0 0% 0 0 1.729578
ruby-xor (click) 5331 6009 4 64 0 0% 0 0 1.912483
setivar (click) 2652 3389 3 31 0 0% 0 0 1.04199
setivar_object (click) 3181 3537 3 33 0 0% 0 0 1.105352
setivar_young (click) 3891 4259 4 41 0 0% 0 0 1.334752
str_concat (click) 5469 6016 6 62 0 0% 0 0 1.960555
throw (click) 5848 4291 5 46 0 0% 0 0 1.634142

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.