YJIT Benchmarks

Details for Benchmarks at 2025-04-14 03:49:39 UTC

YJIT metrics from the yjit-bench suite using Ruby 8ad5dd7998.

Using the geomean of the headline benchmarks for x86 YJIT 3.5.0dev is
  • 90.2% faster than CRuby 3.5.0dev
  • 7.5% faster than YJIT 3.3.6
On railsbench it is
  • 104.5% faster than CRuby 3.5.0dev
  • 8.0% faster than YJIT 3.3.6
x86_64 runtime: 4 hours, 20 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 81 5 84 50 158 50 163
chunky-png 5 32 5 35 50 15 50 33
erubi-rails 5 16 5 15 50 10 50 10
hexapdf 5 10 5 10 50 10 50 10
liquid-c 5 421 5 430 50 591 50 643
liquid-compile 5 408 5 463 50 546 50 683
liquid-render 5 171 5 170 50 403 50 433
lobsters 5 19 5 19 50 10 50 10
mail 5 189 5 192 50 252 50 246
psych-load 5 10 5 10 50 10 50 10
railsbench 5 10 5 10 50 10 50 10
rubocop 5 156 5 159 50 249 50 266
ruby-lsp 5 161 5 163 50 261 50 270
sequel 5 433 5 418 50 601 50 590
binarytrees 5 84 5 84 50 149 50 136
blurhash 5 82 5 88 50 127 50 145
erubi 5 125 5 148 50 98 50 148
etanni 5 90 5 102 50 54 50 71
fannkuchredux 5 52 5 58 50 99 50 107
fluentd 5 64 5 63 50 26 50 24
graphql 5 84 5 87 50 57 50 58
graphql-native 5 40 5 50 50 10 50 10
lee 5 22 5 25 50 10 50 10
matmul 5 51 5 51 50 85 50 93
nbody 5 248 5 254 50 577 50 704
nqueens 5 120 5 127 50 75 50 565
optcarrot 5 10 5 10 50 10 50 10
protoboeuf 5 175 5 186 50 620 50 714
protoboeuf-encode 5 178 5 209 50 329 50 827
rack 5 574 5 636 50 947 50 1031
ruby-json 5 83 5 83 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 35 5 37 50 23 50 27
30k_ifelse 5 28 5 28 50 215 50 206
30k_methods 5 38 5 38 50 478 50 478
cfunc_itself 5 346 5 361 50 1147 50 1258
fib 5 126 5 143 50 910 50 933
getivar 5 207 5 331 50 2246 50 2769
keyword_args 5 107 5 108 50 1042 50 1243
loops-times 5 24 5 28 50 47 50 65
object-new 5 322 5 328 50 405 50 390
respond_to 5 133 5 142 50 3259 50 3981
ruby-xor 5 242 5 259 50 803 50 1374
setivar 5 358 5 635 50 3191 50 5915
setivar_object 5 354 5 481 50 703 50 812
setivar_young 5 365 5 482 50 745 50 819
str_concat 5 398 5 476 50 967 50 1226
throw 5 1263 5 1289 50 1774 50 1701

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) 1429915 1186906 209 2202 0 0% 0 0 65.234512
chunky-png (click) 304173 228572 84 1124 1 0% 0 0 33.324299
erubi-rails (click) 1920295 1690700 259 2982 19 0% 0 0 81.893313
hexapdf (click) 1445666 1243112 596 13148 41 0% 0 0 378.442369
liquid-c (click) 481042 393152 115 1744 5 0% 0 0 48.726445
liquid-compile (click) 407308 334112 146 2079 2 0% 0 0 64.615195
liquid-render (click) 587180 513849 132 2310 8 0% 0 0 65.382117
lobsters (click) 8135653 6778976 3160 52853 104 0% 0 0 1808.579956
mail (click) 760339 638645 342 5317 14 0% 0 0 154.739549
psych-load (click) 256981 226444 61 617 3 0% 0 0 19.298668
railsbench (click) 3259482 2796302 1645 16219 52 0% 0 0 468.615066
rubocop (click) 5673496 4862482 2887 50562 110 0% 4 0 1497.657701
ruby-lsp (click) 846641 758027 305 4732 24 0% 0 0 134.673858
sequel (click) 450089 370696 11 94 0 0% 0 0 3.262704
binarytrees (click) 7093 6143 6 52 0 0% 0 0 2.312472
blurhash (click) 50118 50863 27 438 0 0% 0 0 14.241626
erubi (click) 232130 214079 5 97 0 0% 0 0 3.249318
etanni (click) 30101 29597 8 88 0 0% 0 0 3.001365
fannkuchredux (click) 23031 13626 3 249 0 0% 0 0 7.382397
fluentd (click) 365017 316308 7 93 0 0% 0 0 3.167855
graphql (click) 426234 325550 66 676 0 0% 0 0 21.106715
graphql-native (click) 394854 355538 37 255 0 0% 0 0 8.709618
lee (click) 302761 224106 45 749 0 0% 0 0 23.542244
matmul (click) 10657 3512 8 109 0 0% 0 0 3.551796
nbody (click) 13050 17086 6 172 0 0% 0 0 4.412431
nqueens (click) 20163 27348 5 239 0 0% 0 0 6.887828
optcarrot (click) 318856 234467 188 4395 34 0% 0 0 103.93503
protoboeuf (click) 150678 129601 12 1479 0 0% 0 0 41.799159
protoboeuf-encode (click) 221062 212146 14 1220 0 0% 0 0 31.461468
rack (click) 237501 194766 32 385 0 0% 0 0 10.183415
ruby-json (click) 23539 20400 8 178 0 0% 0 0 5.032339
rubyboy (click) 661564 572325 177 5805 40 0% 0 0 143.969964
rubykon (click) 133501 111856 137 1482 3 0% 0 0 43.008417
sudoku (click) 45311 40871 7 516 0 0% 0 0 15.543931
tinygql (click) 278249 228693 58 765 5 0% 0 0 21.647963
30k_ifelse (click) 5658774 5284843 9259 51667 0 0% 0 0 1415.385717
30k_methods (click) 2234569 1592883 5778 19351 0 0% 0 0 455.587499
cfunc_itself (click) 5130 4086 4 47 0 0% 0 0 1.343052
fib (click) 2599 2861 3 26 0 0% 0 0 1.011517
getivar (click) 3501 4713 3 51 0 0% 0 0 1.353774
keyword_args (click) 6320 4813 5 49 0 0% 0 0 1.600435
loops-times (click) 6688 7405 5 70 0 0% 0 0 2.317804
object-new (click) 1918 2093 2 22 0 0% 0 0 0.827867
respond_to (click) 5868 6227 4 62 0 0% 0 0 1.728144
ruby-xor (click) 5331 6009 4 64 0 0% 0 0 1.932676
setivar (click) 2652 3389 3 31 0 0% 0 0 1.014995
setivar_object (click) 3181 3537 3 33 0 0% 0 0 1.089899
setivar_young (click) 3891 4259 4 41 0 0% 0 0 1.326842
str_concat (click) 5469 6016 6 62 0 0% 0 0 1.98952
throw (click) 5848 4291 5 46 0 0% 0 0 1.620297

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.