YJIT Benchmarks

Details for Benchmarks at 2025-04-01 03:51:48 UTC

YJIT metrics from the yjit-bench suite using Ruby 79f3167e0b.

Using the geomean of the headline benchmarks for x86 YJIT 3.5.0dev is
  • 90.3% faster than CRuby 3.5.0dev
  • 8.4% faster than YJIT 3.3.6
On railsbench it is
  • 96.7% faster than CRuby 3.5.0dev
  • 3.7% 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 82 5 86 50 154 50 166
chunky-png 5 32 5 34 50 15 50 34
erubi-rails 5 16 5 15 50 10 50 10
hexapdf 5 10 5 10 50 10 50 10
liquid-c 5 408 5 439 50 587 50 637
liquid-compile 5 409 5 406 50 540 50 595
liquid-render 5 171 5 169 50 408 50 447
lobsters 5 19 5 19 50 10 50 10
mail 5 195 5 197 50 238 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 50 249 50 269
ruby-lsp 5 158 5 142 50 205 50 250
sequel 5 430 5 423 50 569 50 595
binarytrees 5 84 5 86 50 149 50 142
blurhash 5 82 5 88 50 127 50 145
erubi 5 92 5 154 50 34 50 141
etanni 5 90 5 101 50 53 50 73
fannkuchredux 5 52 5 58 50 99 50 107
fluentd 5 63 5 64 50 25 50 41
graphql 5 84 5 85 50 57 50 58
graphql-native 5 40 5 53 50 10 50 15
lee 5 23 5 23 50 10 50 10
matmul 5 51 5 54 50 85 50 96
nbody 5 248 5 281 50 577 50 656
nqueens 5 120 5 130 50 75 50 567
optcarrot 5 10 5 10 50 10 50 10
protoboeuf 5 175 5 185 50 620 50 733
protoboeuf-encode 5 181 5 210 50 327 50 838
rack 5 580 5 613 50 958 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 37 50 23 50 28
30k_ifelse 5 28 5 28 50 214 50 206
30k_methods 5 38 5 38 50 482 50 474
cfunc_itself 5 346 5 362 50 1147 50 1258
fib 5 125 5 148 50 909 50 933
getivar 5 207 5 325 50 2242 50 2764
keyword_args 5 107 5 112 50 1042 50 1243
loops-times 5 24 5 27 50 48 50 65
object-new 5 323 5 327 50 404 50 384
respond_to 5 134 5 141 50 3257 50 3977
ruby-xor 5 241 5 264 50 803 50 1381
setivar 5 358 5 543 50 3191 50 5877
setivar_object 5 354 5 466 50 699 50 810
setivar_young 5 365 5 468 50 744 50 811
str_concat 5 401 5 474 50 969 50 1219
throw 5 1266 5 1251 50 1775 50 1748

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) 1425242 1206410 209 2202 0 0% 0 0 64.457235
chunky-png (click) 295193 227867 84 1124 1 0% 0 0 33.318022
erubi-rails (click) 1923885 1662921 259 2953 19 0% 0 0 86.965595
hexapdf (click) 1439886 1246283 595 13139 40 0% 0 0 374.218979
liquid-c (click) 479529 440611 115 1744 5 0% 0 0 49.526954
liquid-compile (click) 403264 370793 146 2092 2 0% 0 0 65.766743
liquid-render (click) 569198 516079 132 2310 8 0% 0 0 64.718793
lobsters (click) 8128694 6880308 3159 52715 104 0% 0 0 1795.999295
mail (click) 760776 638784 342 5317 14 0% 0 0 153.726552
psych-load (click) 245312 214810 61 617 3 0% 0 0 19.100127
railsbench (click) 3254151 2643847 1645 16189 52 0% 0 0 466.644193
rubocop (click) 5662021 4860022 2887 50544 110 0% 4 0 1579.238275
ruby-lsp (click) 811349 742330 305 4732 24 0% 0 0 134.232932
sequel (click) 442505 365594 11 94 0 0% 0 0 3.195654
binarytrees (click) 7093 6143 6 52 0 0% 0 0 2.242812
blurhash (click) 50118 50863 27 438 0 0% 0 0 14.201604
erubi (click) 255477 217397 5 97 0 0% 0 0 3.254303
etanni (click) 30101 29597 8 88 0 0% 0 0 3.011861
fannkuchredux (click) 23031 13626 3 249 0 0% 0 0 7.352083
fluentd (click) 387561 326575 7 93 0 0% 0 0 3.182574
graphql (click) 426234 325583 66 676 0 0% 0 0 20.914202
graphql-native (click) 365387 313111 37 255 0 0% 0 0 8.77737
lee (click) 264348 217087 45 749 0 0% 0 0 23.532951
matmul (click) 10657 3512 8 109 0 0% 0 0 3.511966
nbody (click) 13050 17086 6 172 0 0% 0 0 4.36619
nqueens (click) 20163 27348 5 239 0 0% 0 0 6.881263
optcarrot (click) 318856 234467 188 4395 34 0% 0 0 101.853054
protoboeuf (click) 150678 129601 12 1479 0 0% 0 0 42.269911
protoboeuf-encode (click) 221062 212146 14 1220 0 0% 0 0 31.215874
rack (click) 230658 204677 32 385 0 0% 0 0 10.121594
ruby-json (click) 20004 17403 8 178 0 0% 0 0 5.013504
rubyboy (click) 654508 574532 177 5803 40 0% 0 0 144.722076
rubykon (click) 133103 127961 137 1480 3 0% 0 0 42.47538
sudoku (click) 45311 40871 7 516 0 0% 0 0 15.506191
tinygql (click) 258245 229293 58 762 5 0% 0 0 21.811321
30k_ifelse (click) 5658774 5284843 9259 51667 0 0% 0 0 1411.927976
30k_methods (click) 2234569 1592883 5778 19351 0 0% 0 0 455.759076
cfunc_itself (click) 5130 4086 4 47 0 0% 0 0 1.3584
fib (click) 2599 2861 3 26 0 0% 0 0 0.98181
getivar (click) 3501 4713 3 51 0 0% 0 0 1.295929
keyword_args (click) 6320 4813 5 49 0 0% 0 0 1.602936
loops-times (click) 6688 7405 5 70 0 0% 0 0 2.327876
object-new (click) 1918 2093 2 22 0 0% 0 0 0.869598
respond_to (click) 5868 6227 4 62 0 0% 0 0 1.719428
ruby-xor (click) 5331 6009 4 64 0 0% 0 0 1.900777
setivar (click) 2652 3389 3 31 0 0% 0 0 0.996709
setivar_object (click) 3181 3537 3 33 0 0% 0 0 1.123805
setivar_young (click) 3891 4259 4 41 0 0% 0 0 1.3311
str_concat (click) 5469 6016 6 62 0 0% 0 0 2.050383
throw (click) 5848 4291 5 46 0 0% 0 0 1.634993

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.