YJIT Benchmarks

Details for Benchmarks at 2025-03-20 03:47:19 UTC

YJIT metrics from the yjit-bench suite using Ruby 641f15b1c6.

Using the geomean of the headline benchmarks for x86 YJIT 3.5.0dev is
  • 87.8% faster than CRuby 3.5.0dev
  • 5.6% faster than YJIT 3.3.6
On railsbench it is
  • 93.9% faster than CRuby 3.5.0dev
  • 2.1% 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 81 5 86 50 156 50 165
chunky-png 5 31 5 34 50 15 50 34
erubi-rails 5 16 5 16 50 10 50 10
hexapdf 5 10 5 10 50 10 50 10
liquid-c 5 410 5 431 50 587 50 634
liquid-compile 5 407 5 416 50 561 50 566
liquid-render 5 171 5 172 50 410 50 443
lobsters 5 19 5 19 50 10 50 10
mail 5 195 5 198 50 250 50 250
psych-load 5 10 5 10 50 10 50 10
railsbench 5 10 5 10 50 10 50 10
rubocop 5 157 5 159 50 253 50 266
ruby-lsp 5 155 5 159 50 258 50 252
sequel 5 433 5 422 50 602 50 584
binarytrees 5 84 5 86 50 149 50 142
blurhash 5 82 5 88 50 127 50 145
erubi 5 125 5 148 50 99 50 153
etanni 5 90 5 102 50 54 50 72
fannkuchredux 5 52 5 58 50 99 50 106
fluentd 5 63 5 64 50 25 50 29
graphql 5 84 5 85 50 57 50 57
graphql-native 5 47 5 52 50 10 50 14
lee 5 23 5 23 50 10 50 10
matmul 5 51 5 50 50 85 50 96
nbody 5 248 5 280 50 577 50 641
nqueens 5 120 5 128 50 75 50 562
optcarrot 5 10 5 10 50 10 50 10
protoboeuf 5 175 5 190 50 620 50 735
protoboeuf-encode 5 178 5 205 50 329 50 818
rack 5 580 5 628 50 935 50 1045
ruby-json 5 84 5 84 50 49 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 50 161
tinygql 5 36 5 38 50 22 50 29
30k_ifelse 5 28 5 28 50 213 50 206
30k_methods 5 38 5 38 50 483 50 474
cfunc_itself 5 345 5 361 50 1147 50 1258
fib 5 127 5 148 50 909 50 933
getivar 5 207 5 325 50 2241 50 2764
keyword_args 5 107 5 112 50 1042 50 1243
loops-times 5 24 5 27 50 48 50 65
object-new 5 322 5 327 50 405 50 384
respond_to 5 133 5 133 50 3257 50 3980
ruby-xor 5 241 5 260 50 802 50 1379
setivar 5 364 5 628 50 3195 50 5921
setivar_object 5 355 5 477 50 702 50 754
setivar_young 5 364 5 478 50 744 50 806
str_concat 5 401 5 478 50 969 50 1222
throw 5 1267 5 1289 50 1780 50 1720

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) 1425658 1197783 209 2204 0 0% 0 0 64.965119
chunky-png (click) 323264 285931 84 1124 1 0% 0 0 33.13995
erubi-rails (click) 1922569 1649730 259 2945 19 0% 0 0 80.83664
hexapdf (click) 1439424 1154739 595 13143 39 0% 0 0 380.101411
liquid-c (click) 475400 420057 114 1743 5 0% 0 0 49.533141
liquid-compile (click) 430767 378968 146 2087 2 0% 0 0 65.642809
liquid-render (click) 607775 515773 131 2309 8 0% 0 0 65.123601
lobsters (click) 8150781 6823373 3160 52835 105 0% 0 0 1800.727475
mail (click) 761338 680293 342 5318 14 0% 0 0 158.08911
psych-load (click) 245075 224786 61 617 3 0% 0 0 19.443561
railsbench (click) 3258674 2826206 1645 16197 52 0% 0 0 497.95908
rubocop (click) 5666895 4845242 2887 50512 110 0% 4 0 1479.274403
ruby-lsp (click) 813400 735702 305 4735 24 0% 0 0 134.067972
sequel (click) 449812 418702 11 94 0 0% 0 0 3.475688
binarytrees (click) 7093 6143 6 52 0 0% 0 0 2.231578
blurhash (click) 50118 50863 27 438 0 0% 0 0 14.121709
erubi (click) 232519 206190 5 97 0 0% 0 0 3.175416
etanni (click) 27173 26329 8 88 0 0% 0 0 2.990705
fannkuchredux (click) 23046 13626 3 249 0 0% 0 0 7.331402
fluentd (click) 368039 310833 7 93 0 0% 0 0 3.30085
graphql (click) 426146 399175 66 676 0 0% 0 0 21.195048
graphql-native (click) 389777 335069 37 255 0 0% 0 0 8.750527
lee (click) 272776 221746 45 750 0 0% 0 0 23.741953
matmul (click) 10657 3512 8 109 0 0% 0 0 3.517036
nbody (click) 13065 17086 6 172 0 0% 0 0 4.422274
nqueens (click) 20163 27348 5 239 0 0% 0 0 6.790676
optcarrot (click) 319096 242804 188 4399 34 0% 0 0 100.9976
protoboeuf (click) 150678 129601 12 1479 0 0% 0 0 42.167661
protoboeuf-encode (click) 221107 212146 14 1220 0 0% 0 0 31.265818
rack (click) 266876 235851 32 385 0 0% 0 0 10.261679
ruby-json (click) 23776 20702 8 181 0 0% 0 0 5.213863
rubyboy (click) 686013 609582 177 5803 40 0% 0 0 145.466172
rubykon (click) 133546 111856 137 1482 3 0% 0 0 42.773332
sudoku (click) 45311 40871 7 516 0 0% 0 0 15.452969
tinygql (click) 268395 235473 58 762 5 0% 0 0 22.089326
30k_ifelse (click) 5658804 5284852 9259 51668 0 0% 0 0 1418.890446
30k_methods (click) 2234569 1592883 5778 19351 0 0% 0 0 458.1312
cfunc_itself (click) 5130 4086 4 47 0 0% 0 0 1.343879
fib (click) 2599 2861 3 26 0 0% 0 0 0.978282
getivar (click) 3501 4713 3 51 0 0% 0 0 1.3346
keyword_args (click) 6320 4813 5 49 0 0% 0 0 1.627791
loops-times (click) 6703 7405 5 71 0 0% 0 0 2.299979
object-new (click) 1933 2093 2 22 0 0% 0 0 0.847383
respond_to (click) 5868 6227 4 62 0 0% 0 0 1.688731
ruby-xor (click) 5331 6009 4 64 0 0% 0 0 1.899545
setivar (click) 2652 3389 3 31 0 0% 0 0 0.995046
setivar_object (click) 3181 3537 3 33 0 0% 0 0 1.073448
setivar_young (click) 3891 4259 4 41 0 0% 0 0 1.32143
str_concat (click) 5469 6016 6 62 0 0% 0 0 1.983353
throw (click) 5848 4291 5 46 0 0% 0 0 1.612165

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.