YJIT Benchmarks

Details for Benchmarks at 2025-04-15 03:48:57 UTC

YJIT metrics from the yjit-bench suite using Ruby e1f544c1cf.

Using the geomean of the headline benchmarks for x86 YJIT 3.5.0dev is
  • 90.2% faster than CRuby 3.5.0dev
  • 8.9% faster than YJIT 3.3.6
On railsbench it is
  • 105.0% faster than CRuby 3.5.0dev
  • 9.7% 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.

Want Raw Graphs and CSV?

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 84 50 156 50 160
chunky-png 5 31 5 35 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 5 421 5 430 50 562 50 641
liquid-compile 5 411 5 462 50 572 50 685
liquid-render 5 170 5 170 50 408 50 445
lobsters 5 19 5 19 50 10 50 10
mail 5 195 5 198 50 236 50 253
psych-load 5 10 5 10 50 10 50 10
railsbench 5 10 5 10 50 10 50 10
rubocop 5 156 5 160 50 250 50 266
ruby-lsp 5 155 5 161 50 247 50 264
sequel 5 420 5 423 50 600 50 589
binarytrees 5 84 5 84 50 149 50 135
blurhash 5 82 5 88 50 127 50 145
erubi 5 119 5 133 50 88 50 147
etanni 5 91 5 101 50 54 50 71
fannkuchredux 5 52 5 58 50 99 50 106
fluentd 5 63 5 64 50 24 50 29
graphql 5 85 5 85 50 56 50 58
graphql-native 5 40 5 52 50 10 50 12
lee 5 22 5 25 50 10 50 10
matmul 5 50 5 51 50 85 50 96
nbody 5 248 5 253 50 577 50 680
nqueens 5 120 5 127 50 75 50 562
optcarrot 5 10 5 10 50 10 50 10
protoboeuf 5 174 5 183 50 620 50 721
protoboeuf-encode 5 180 5 207 50 329 50 818
rack 5 573 5 634 50 949 50 1038
ruby-json 5 83 5 83 50 50 50 49
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 50 159
tinygql 5 36 5 37 50 23 50 25
30k_ifelse 5 28 5 28 50 212 50 206
30k_methods 5 38 5 38 50 478 50 477
cfunc_itself 5 345 5 350 50 1147 50 1258
fib 5 127 5 148 50 908 50 933
getivar 5 207 5 330 50 2241 50 2750
keyword_args 5 107 5 109 50 1042 50 1243
loops-times 5 24 5 28 50 48 50 65
object-new 5 323 5 329 50 405 50 390
respond_to 5 134 5 142 50 3258 50 3983
ruby-xor 5 240 5 262 50 803 50 1383
setivar 5 358 5 650 50 3195 50 5933
setivar_object 5 355 5 481 50 698 50 796
setivar_young 5 365 5 482 50 744 50 808
str_concat 5 398 5 448 50 971 50 1220
throw 5 1263 5 1296 50 1777 50 1713

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) 1418444 1194052 209 2202 0 0% 0 0 63.979093
chunky-png (click) 291947 244098 84 1124 1 0% 0 0 33.633609
erubi-rails (click) 1898307 1632265 259 2950 19 0% 0 0 81.503837
hexapdf (click) 1448224 1271933 596 13146 37 0% 0 0 374.272301
liquid-c (click) 492327 403479 115 1744 5 0% 0 0 48.899873
liquid-compile (click) 414512 373791 146 2073 2 0% 0 0 64.275897
liquid-render (click) 574349 488211 132 2310 8 0% 0 0 65.403711
lobsters (click) 8143994 6865178 3160 52885 104 0% 0 0 1822.677679
mail (click) 736340 618518 342 5317 14 0% 0 0 158.255871
psych-load (click) 280164 254735 61 615 3 0% 0 0 19.417642
railsbench (click) 3261934 2790785 1645 16252 52 0% 0 0 473.894926
rubocop (click) 5690805 4852712 2887 50529 110 0% 4 0 1572.71813
ruby-lsp (click) 845204 765221 305 4732 24 0% 0 0 134.027583
sequel (click) 480660 405581 11 94 0 0% 0 0 3.517461
binarytrees (click) 7093 6143 6 52 0 0% 0 0 2.331164
blurhash (click) 50118 50863 27 438 0 0% 0 0 14.215922
erubi (click) 224366 216656 5 97 0 0% 0 0 3.206257
etanni (click) 30101 29597 8 88 0 0% 0 0 2.991244
fannkuchredux (click) 23031 13626 3 249 0 0% 0 0 7.358997
fluentd (click) 373740 332652 7 93 0 0% 0 0 3.185271
graphql (click) 426211 333605 66 676 0 0% 0 0 21.223469
graphql-native (click) 392590 320769 37 255 0 0% 0 0 8.573828
lee (click) 299381 262846 45 749 0 0% 0 0 23.473736
matmul (click) 10657 3512 8 109 0 0% 0 0 3.581947
nbody (click) 13050 17086 6 172 0 0% 0 0 4.405818
nqueens (click) 20163 27348 5 239 0 0% 0 0 6.836355
optcarrot (click) 318856 234467 188 4395 34 0% 0 0 100.784566
protoboeuf (click) 150678 129601 12 1479 0 0% 0 0 42.021234
protoboeuf-encode (click) 221062 212146 14 1220 0 0% 0 0 31.37131
rack (click) 261657 216005 32 385 0 0% 0 0 10.166905
ruby-json (click) 23859 20840 8 178 0 0% 0 0 5.083499
rubyboy (click) 654726 574782 177 5803 40 0% 0 0 144.946207
rubykon (click) 133501 111856 137 1482 3 0% 0 0 42.76277
sudoku (click) 45311 40871 7 516 0 0% 0 0 15.562957
tinygql (click) 300039 231216 58 762 5 0% 0 0 21.793498
30k_ifelse (click) 5658774 5284843 9259 51667 0 0% 0 0 1409.514078
30k_methods (click) 2234569 1592883 5778 19351 0 0% 0 0 455.108193
cfunc_itself (click) 5130 4086 4 47 0 0% 0 0 1.326001
fib (click) 2599 2861 3 26 0 0% 0 0 0.977466
getivar (click) 3501 4713 3 51 0 0% 0 0 1.352791
keyword_args (click) 6320 4813 5 49 0 0% 0 0 1.616664
loops-times (click) 6688 7405 5 70 0 0% 0 0 2.306999
object-new (click) 1918 2093 2 22 0 0% 0 0 0.835912
respond_to (click) 5868 6227 4 62 0 0% 0 0 1.693023
ruby-xor (click) 5331 6009 4 64 0 0% 0 0 1.912576
setivar (click) 2652 3389 3 31 0 0% 0 0 0.98593
setivar_object (click) 3181 3537 3 33 0 0% 0 0 1.111284
setivar_young (click) 3891 4259 4 41 0 0% 0 0 1.306836
str_concat (click) 5469 6016 6 62 0 0% 0 0 2.03845
throw (click) 5848 4291 5 46 0 0% 0 0 1.621482

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.