YJIT Benchmarks

Details for Benchmarks at 2025-03-23 03:47:22 UTC

YJIT metrics from the yjit-bench suite using Ruby 5f77f9bea6.

Using the geomean of the headline benchmarks for x86 YJIT 3.5.0dev is
  • 88.5% faster than CRuby 3.5.0dev
  • 5.8% faster than YJIT 3.3.6
On railsbench it is
  • 106.4% faster than CRuby 3.5.0dev
  • 6.1% faster than YJIT 3.3.6
x86_64 runtime: 4 hours, 19 minutes
aarch64 runtime: 3 hours, 40 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 50 157 50 169
chunky-png 5 32 5 34 50 16 50 33
erubi-rails 5 16 5 15 50 10 50 10
hexapdf 5 10 5 10 50 10 50 10
liquid-c 5 412 5 434 50 591 50 649
liquid-compile 5 410 5 428 50 538 50 565
liquid-render 5 171 5 173 50 402 50 448
lobsters 5 20 5 19 50 10 50 10
mail 5 189 5 196 50 252 50 251
psych-load 5 10 5 10 50 10 50 10
railsbench 5 10 5 10 50 10 50 10
rubocop 5 156 5 156 50 250 50 267
ruby-lsp 5 162 5 164 50 260 50 246
sequel 5 432 5 424 50 601 50 590
binarytrees 5 84 5 86 50 149 50 142
blurhash 5 82 5 86 50 127 50 145
erubi 5 124 5 145 50 98 50 125
etanni 5 90 5 100 50 54 50 72
fannkuchredux 5 52 5 58 50 99 50 104
fluentd 5 63 5 60 50 26 50 29
graphql 5 85 5 85 50 57 50 58
graphql-native 5 39 5 53 50 10 50 14
lee 5 22 5 23 50 10 50 10
matmul 5 51 5 54 50 85 50 96
nbody 5 248 5 283 50 578 50 705
nqueens 5 120 5 130 50 75 50 566
optcarrot 5 10 5 10 50 10 50 10
protoboeuf 5 174 5 182 50 620 50 733
protoboeuf-encode 5 180 5 212 50 327 50 793
rack 5 574 5 628 50 946 50 1059
ruby-json 5 84 5 84 50 50 50 51
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 50 159
tinygql 5 35 5 38 50 22 50 29
30k_ifelse 5 28 5 27 50 215 50 207
30k_methods 5 38 5 38 50 483 50 478
cfunc_itself 5 346 5 363 50 1147 50 1258
fib 5 127 5 147 50 910 50 933
getivar 5 207 5 322 50 2241 50 2764
keyword_args 5 107 5 108 50 1042 50 1243
loops-times 5 24 5 28 50 47 50 65
object-new 5 322 5 326 50 405 50 382
respond_to 5 133 5 138 50 3258 50 3981
ruby-xor 5 241 5 264 50 804 50 1388
setivar 5 358 5 648 50 3182 50 5928
setivar_object 5 355 5 480 50 700 50 755
setivar_young 5 369 5 479 50 743 50 807
str_concat 5 397 5 464 50 968 50 1218
throw 5 1263 5 1311 50 1771 50 1798

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) 1435684 1185399 209 2202 0 0% 0 0 64.251576
chunky-png (click) 294760 243595 84 1129 1 0% 0 0 33.747591
erubi-rails (click) 1925817 1607434 259 2981 19 0% 0 0 87.474633
hexapdf (click) 1468067 1230408 595 13138 41 0% 0 0 373.851683
liquid-c (click) 476419 388791 114 1741 5 0% 0 0 49.891291
liquid-compile (click) 429793 369525 146 2075 2 0% 0 0 64.957092
liquid-render (click) 579056 514300 131 2307 8 0% 0 0 66.375175
lobsters (click) 8123481 6872140 3160 52720 104 0% 0 0 1821.505202
mail (click) 735610 618854 342 5317 14 0% 0 0 154.069411
psych-load (click) 277395 252613 61 615 3 0% 0 0 19.107991
railsbench (click) 3261034 2773437 1645 16196 52 0% 0 0 470.477249
rubocop (click) 5665076 4706379 2887 50547 110 0% 4 0 1486.113354
ruby-lsp (click) 807365 730707 305 4732 24 0% 0 0 134.307099
sequel (click) 477445 394373 11 96 0 0% 0 0 3.507685
binarytrees (click) 7093 6143 6 52 0 0% 0 0 2.287281
blurhash (click) 50118 50863 27 438 0 0% 0 0 14.160768
erubi (click) 255461 249080 5 97 0 0% 0 0 3.218403
etanni (click) 27158 26329 8 88 0 0% 0 0 2.9997
fannkuchredux (click) 23031 13626 3 249 0 0% 0 0 7.321147
fluentd (click) 367856 319452 7 93 0 0% 0 0 3.152504
graphql (click) 393988 330916 66 676 0 0% 0 0 20.917055
graphql-native (click) 364115 327773 37 255 0 0% 0 0 8.599931
lee (click) 303503 265740 45 749 0 0% 0 0 23.493956
matmul (click) 10657 3512 8 109 0 0% 0 0 3.548057
nbody (click) 13050 17086 6 172 0 0% 0 0 4.457667
nqueens (click) 20163 27348 5 239 0 0% 0 0 6.837291
optcarrot (click) 318856 234467 188 4395 34 0% 0 0 102.329261
protoboeuf (click) 150678 129601 12 1479 0 0% 0 0 42.333762
protoboeuf-encode (click) 221062 212146 14 1220 0 0% 0 0 31.205027
rack (click) 263115 233214 32 385 0 0% 0 0 10.231532
ruby-json (click) 23776 20702 8 181 0 0% 0 0 5.193689
rubyboy (click) 653690 639688 177 5803 40 0% 0 0 144.952396
rubykon (click) 133501 111856 137 1482 3 0% 0 0 42.679046
sudoku (click) 45311 40871 7 516 0 0% 0 0 15.532873
tinygql (click) 296769 245107 58 762 5 0% 0 0 21.270821
30k_ifelse (click) 5658774 5284843 9259 51667 0 0% 0 0 1424.221017
30k_methods (click) 2234569 1592883 5778 19351 0 0% 0 0 451.376466
cfunc_itself (click) 5130 4086 4 47 0 0% 0 0 1.350579
fib (click) 2599 2861 3 26 0 0% 0 0 0.968508
getivar (click) 3501 4713 3 51 0 0% 0 0 1.317816
keyword_args (click) 6320 4813 5 49 0 0% 0 0 1.641259
loops-times (click) 6688 7405 5 70 0 0% 0 0 2.266825
object-new (click) 1918 2093 2 22 0 0% 0 0 0.839063
respond_to (click) 5868 6227 4 62 0 0% 0 0 1.741648
ruby-xor (click) 5331 6009 4 64 0 0% 0 0 1.920138
setivar (click) 2652 3389 3 31 0 0% 0 0 0.988389
setivar_object (click) 3181 3537 3 33 0 0% 0 0 1.116535
setivar_young (click) 3891 4259 4 41 0 0% 0 0 1.316466
str_concat (click) 5469 6016 6 62 0 0% 0 0 1.980006
throw (click) 5848 4291 5 46 0 0% 0 0 1.625419

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.