YJIT Benchmarks

Details for Benchmarks at 2025-04-09 03:48:13 UTC

YJIT metrics from the yjit-bench suite using Ruby 8ab517698a.

Using the geomean of the headline benchmarks for x86 YJIT 3.5.0dev is
  • 89.9% faster than CRuby 3.5.0dev
  • 8.2% faster than YJIT 3.3.6
On railsbench it is
  • 107.1% faster than CRuby 3.5.0dev
  • 9.3% 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 50 157 50 162
chunky-png 5 32 5 34 50 15 50 34
erubi-rails 5 15 5 15 50 10 50 10
hexapdf 5 10 5 10 50 10 50 10
liquid-c 5 421 5 433 50 589 50 618
liquid-compile 5 412 5 464 50 576 50 686
liquid-render 5 171 5 173 50 409 50 443
lobsters 5 19 5 19 50 10 50 10
mail 5 195 5 193 50 238 50 256
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 5 155 5 164 50 240 50 271
sequel 5 432 5 420 50 601 50 592
binarytrees 5 84 5 84 50 149 50 134
blurhash 5 82 5 88 50 127 50 145
erubi 5 117 5 148 50 34 50 132
etanni 5 90 5 103 50 54 50 70
fannkuchredux 5 52 5 58 50 99 50 107
fluentd 5 64 5 61 50 26 50 26
graphql 5 85 5 87 50 56 50 53
graphql-native 5 49 5 48 50 10 50 15
lee 5 22 5 25 50 10 50 10
matmul 5 51 5 55 50 85 50 85
nbody 5 248 5 283 50 577 50 626
nqueens 5 120 5 130 50 75 50 561
optcarrot 5 10 5 10 50 10 50 10
protoboeuf 5 175 5 187 50 620 50 716
protoboeuf-encode 5 178 5 209 50 326 50 822
rack 5 577 5 647 50 946 50 1060
ruby-json 5 84 5 84 50 50 50 50
rubyboy 5 10 5 10 50 10 50 10
rubykon 5 21 5 23 50 10 50 10
sudoku 5 48 5 51 50 164 50 159
tinygql 5 36 5 38 50 22 50 28
30k_ifelse 5 28 5 28 50 214 50 206
30k_methods 5 39 5 38 50 478 50 477
cfunc_itself 5 346 5 352 50 1147 50 1258
fib 5 127 5 146 50 910 50 933
getivar 5 207 5 338 50 2243 50 2762
keyword_args 5 107 5 110 50 1042 50 1243
loops-times 5 24 5 27 50 48 50 65
object-new 5 323 5 325 50 405 50 386
respond_to 5 134 5 142 50 3258 50 3983
ruby-xor 5 240 5 260 50 803 50 1373
setivar 5 358 5 549 50 3198 50 5883
setivar_object 5 355 5 466 50 702 50 808
setivar_young 5 365 5 465 50 744 50 816
str_concat 5 401 5 468 50 969 50 1224
throw 5 1265 5 1252 50 1779 50 1719

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) 1451365 1238241 209 2202 0 0% 0 0 68.178039
chunky-png (click) 290852 250963 84 1124 1 0% 0 0 33.756583
erubi-rails (click) 1916404 1605866 259 2955 19 0% 0 0 82.254057
hexapdf (click) 1427047 1220614 595 13143 36 0% 0 0 386.136865
liquid-c (click) 478559 407027 115 1744 5 0% 0 0 48.318589
liquid-compile (click) 396450 326223 146 2082 2 0% 0 0 65.215401
liquid-render (click) 579540 507482 132 2310 8 0% 0 0 65.820277
lobsters (click) 8153522 6808913 3159 52953 104 0% 0 0 1820.299831
mail (click) 730315 678127 342 5317 14 0% 0 0 155.169468
psych-load (click) 254527 240859 61 617 3 0% 0 0 19.347117
railsbench (click) 3241218 2757150 1645 16277 52 0% 0 0 500.669202
rubocop (click) 5695166 4790651 2887 50546 110 0% 4 0 1478.308525
ruby-lsp (click) 810819 744697 305 4727 24 0% 0 0 135.42674
sequel (click) 449835 410317 11 94 0 0% 0 0 3.595943
binarytrees (click) 7093 6143 6 52 0 0% 0 0 2.27077
blurhash (click) 50118 50863 27 438 0 0% 0 0 14.156222
erubi (click) 229554 186646 5 97 0 0% 0 0 3.272692
etanni (click) 30101 29597 8 88 0 0% 0 0 2.981817
fannkuchredux (click) 23031 13626 3 249 0 0% 0 0 7.336304
fluentd (click) 367689 326604 7 93 0 0% 0 0 3.200788
graphql (click) 426641 325981 66 676 0 0% 0 0 21.166146
graphql-native (click) 358573 301000 37 255 0 0% 0 0 8.804687
lee (click) 303621 249368 45 749 0 0% 0 0 23.663078
matmul (click) 10657 3512 8 109 0 0% 0 0 3.525063
nbody (click) 13050 17086 6 172 0 0% 0 0 4.40483
nqueens (click) 20163 27348 5 239 0 0% 0 0 6.898429
optcarrot (click) 318856 234467 188 4395 34 0% 0 0 103.465289
protoboeuf (click) 150678 129601 12 1479 0 0% 0 0 41.849985
protoboeuf-encode (click) 221062 212146 14 1220 0 0% 0 0 31.511972
rack (click) 262785 208276 32 385 0 0% 0 0 10.303953
ruby-json (click) 20219 17676 8 178 0 0% 0 0 5.045154
rubyboy (click) 685740 535479 177 5803 40 0% 0 0 144.326594
rubykon (click) 133501 111856 137 1482 3 0% 0 0 42.831511
sudoku (click) 45311 40871 7 516 0 0% 0 0 15.550025
tinygql (click) 272324 223198 58 762 5 0% 0 0 21.892122
30k_ifelse (click) 5658774 5284843 9259 51667 0 0% 0 0 1431.047111
30k_methods (click) 2234569 1592883 5778 19351 0 0% 0 0 455.331315
cfunc_itself (click) 5130 4086 4 47 0 0% 0 0 1.335631
fib (click) 2599 2861 3 26 0 0% 0 0 0.998546
getivar (click) 3501 4713 3 51 0 0% 0 0 1.344982
keyword_args (click) 6320 4813 5 49 0 0% 0 0 1.599748
loops-times (click) 6688 7405 5 70 0 0% 0 0 2.297533
object-new (click) 1918 2093 2 22 0 0% 0 0 0.821639
respond_to (click) 5868 6227 4 62 0 0% 0 0 1.718981
ruby-xor (click) 5331 6009 4 64 0 0% 0 0 1.899433
setivar (click) 2652 3389 3 31 0 0% 0 0 0.996796
setivar_object (click) 3181 3537 3 33 0 0% 0 0 1.117347
setivar_young (click) 3891 4259 4 41 0 0% 0 0 1.316519
str_concat (click) 5469 6016 6 62 0 0% 0 0 2.047028
throw (click) 5848 4291 5 46 0 0% 0 0 1.618487

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.