YJIT Benchmarks

Details for Benchmarks at 2025-04-06 03:47:31 UTC

YJIT metrics from the yjit-bench suite using Ruby b5ac483d95.

Using the geomean of the headline benchmarks for x86 YJIT 3.5.0dev is
  • 88.3% faster than CRuby 3.5.0dev
  • 7.1% faster than YJIT 3.3.6
On railsbench it is
  • 94.6% faster than CRuby 3.5.0dev
  • 6.2% faster than YJIT 3.3.6
x86_64 runtime: 4 hours, 19 minutes
aarch64 runtime: 3 hours, 43 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 50 158 50 165
chunky-png 5 32 5 34 50 15 50 33
erubi-rails 5 16 5 16 50 10 50 10
hexapdf 5 10 5 10 50 10 50 10
liquid-c 5 420 5 432 50 589 50 650
liquid-compile 5 409 5 415 50 538 50 599
liquid-render 5 172 5 175 50 406 50 443
lobsters 5 19 5 19 50 10 50 10
mail 5 195 5 199 50 251 50 257
psych-load 5 10 5 10 50 10 50 10
railsbench 5 10 5 10 50 10 50 10
rubocop 5 156 5 159 50 251 50 265
ruby-lsp 5 154 5 158 50 246 50 266
sequel 5 432 5 413 50 551 50 572
binarytrees 5 84 5 86 50 149 50 142
blurhash 5 82 5 88 50 127 50 145
erubi 5 125 5 146 50 98 50 153
etanni 5 90 5 102 50 54 50 74
fannkuchredux 5 52 5 58 50 99 50 107
fluentd 5 63 5 64 50 26 50 28
graphql 5 85 5 88 50 56 50 60
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 50 577 50 646
nqueens 5 120 5 129 50 75 50 565
optcarrot 5 10 5 10 50 10 50 10
protoboeuf 5 175 5 184 50 620 50 731
protoboeuf-encode 5 180 5 209 50 326 50 844
rack 5 579 5 633 50 958 50 1068
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 50 160
tinygql 5 36 5 38 50 22 50 29
30k_ifelse 5 28 5 27 50 215 50 207
30k_methods 5 38 5 38 50 478 50 476
cfunc_itself 5 345 5 342 50 1147 50 1258
fib 5 127 5 147 50 910 50 933
getivar 5 207 5 310 50 2240 50 2739
keyword_args 5 107 5 108 50 1042 50 1243
loops-times 5 24 5 27 50 48 50 64
object-new 5 323 5 328 50 404 50 388
respond_to 5 132 5 142 50 3257 50 3982
ruby-xor 5 241 5 262 50 803 50 1381
setivar 5 357 5 539 50 3191 50 5877
setivar_object 5 354 5 461 50 698 50 797
setivar_young 5 362 5 461 50 743 50 806
str_concat 5 397 5 453 50 968 50 1218
throw 5 1265 5 1265 50 1778 50 1750

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) 1437715 1202220 209 2202 0 0% 0 0 64.960836
chunky-png (click) 296462 253431 84 1124 1 0% 0 0 33.608785
erubi-rails (click) 1926894 1641493 259 2950 19 0% 0 0 86.663574
hexapdf (click) 1444796 1227884 596 13144 36 0% 0 0 381.640972
liquid-c (click) 506736 391191 115 1744 5 0% 0 0 49.030268
liquid-compile (click) 409201 327696 146 2093 2 0% 0 0 65.953263
liquid-render (click) 607227 523346 132 2310 8 0% 0 0 65.703551
lobsters (click) 8135358 6765690 3160 52835 104 0% 0 0 1822.892491
mail (click) 729268 587166 342 5317 14 0% 0 0 155.84666
psych-load (click) 255904 234134 61 617 3 0% 0 0 19.363423
railsbench (click) 3231766 2707224 1645 16207 52 0% 0 0 473.176533
rubocop (click) 5673610 4789220 2887 50565 110 0% 4 0 1494.456571
ruby-lsp (click) 832230 721612 305 4732 24 0% 0 0 136.244171
sequel (click) 454562 398387 11 94 0 0% 0 0 3.269248
binarytrees (click) 7093 6143 6 52 0 0% 0 0 2.267851
blurhash (click) 50118 50863 27 438 0 0% 0 0 14.197837
erubi (click) 236204 192611 5 97 0 0% 0 0 3.237251
etanni (click) 30101 29597 8 88 0 0% 0 0 3.00134
fannkuchredux (click) 23031 13626 3 249 0 0% 0 0 7.437477
fluentd (click) 388307 294925 7 93 0 0% 0 0 3.226403
graphql (click) 398253 357556 66 676 0 0% 0 0 21.187862
graphql-native (click) 371811 312636 37 255 0 0% 0 0 8.71285
lee (click) 275554 233718 45 749 0 0% 0 0 23.522988
matmul (click) 10657 3512 8 109 0 0% 0 0 3.570054
nbody (click) 13050 17086 6 172 0 0% 0 0 4.448114
nqueens (click) 20163 27348 5 239 0 0% 0 0 6.860185
optcarrot (click) 318856 234467 188 4395 34 0% 0 0 101.245459
protoboeuf (click) 150678 129601 12 1479 0 0% 0 0 42.400082
protoboeuf-encode (click) 221062 212146 14 1220 0 0% 0 0 31.544375
rack (click) 237566 227544 32 385 0 0% 0 0 10.3424
ruby-json (click) 23776 20731 8 178 0 0% 0 0 5.112837
rubyboy (click) 689184 579954 177 5805 40 0% 0 0 156.209876
rubykon (click) 133501 111856 137 1482 3 0% 0 0 42.932109
sudoku (click) 45311 40871 7 516 0 0% 0 0 15.615025
tinygql (click) 276906 228010 58 762 5 0% 0 0 21.959058
30k_ifelse (click) 5658774 5284843 9259 51667 0 0% 0 0 1432.070607
30k_methods (click) 2234569 1592883 5778 19351 0 0% 0 0 457.067382
cfunc_itself (click) 5130 4086 4 47 0 0% 0 0 1.323036
fib (click) 2599 2861 3 26 0 0% 0 0 0.971584
getivar (click) 3501 4713 3 51 0 0% 0 0 1.355887
keyword_args (click) 6320 4813 5 49 0 0% 0 0 1.618447
loops-times (click) 6688 7405 5 70 0 0% 0 0 2.300019
object-new (click) 1918 2093 2 22 0 0% 0 0 0.836365
respond_to (click) 5868 6227 4 62 0 0% 0 0 1.718111
ruby-xor (click) 5331 6009 4 64 0 0% 0 0 1.932586
setivar (click) 2652 3389 3 31 0 0% 0 0 0.996022
setivar_object (click) 3181 3537 3 33 0 0% 0 0 1.137157
setivar_young (click) 3891 4259 4 41 0 0% 0 0 1.306437
str_concat (click) 5469 6016 6 62 0 0% 0 0 2.042419
throw (click) 5848 4291 5 46 0 0% 0 0 1.57917

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.