YJIT Benchmarks

Details for Benchmarks at 2025-04-13 04:16:56 UTC

YJIT metrics from the yjit-bench suite using Ruby 29b26fd3e7.

Using the geomean of the headline benchmarks for x86 YJIT 3.5.0dev is
  • 90.3% faster than CRuby 3.5.0dev
  • 8.9% faster than YJIT 3.3.6
On railsbench it is
  • 105.6% faster than CRuby 3.5.0dev
  • 8.1% faster than YJIT 3.3.6
x86_64 runtime: 4 hours, 19 minutes
aarch64 runtime: 3 hours, 42 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 83 5 84 50 157 50 165
chunky-png 5 32 5 35 50 16 50 35
erubi-rails 5 16 5 15 50 10 50 10
hexapdf 5 10 5 10 50 10 50 10
liquid-c 5 412 5 431 50 590 50 642
liquid-compile 5 409 5 458 50 541 50 686
liquid-render 5 171 5 174 50 404 50 427
lobsters 5 19 5 19 50 10 50 10
mail 5 195 5 193 50 238 50 254
psych-load 5 10 5 10 50 10 50 10
railsbench 5 10 5 10 50 10 50 10
rubocop 5 156 5 159 50 252 50 267
ruby-lsp 5 158 5 163 50 231 50 274
sequel 5 434 5 417 50 602 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 99 50 150
etanni 5 90 5 101 50 54 50 71
fannkuchredux 5 52 5 58 50 99 50 107
fluentd 5 63 5 61 50 25 50 24
graphql 5 85 5 87 50 57 50 58
graphql-native 5 39 5 50 50 10 50 12
lee 5 23 5 26 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 50 566
optcarrot 5 10 5 10 50 10 50 10
protoboeuf 5 175 5 187 50 620 50 714
protoboeuf-encode 5 180 5 208 50 329 50 827
rack 5 571 5 638 50 951 50 1040
ruby-json 5 84 5 84 50 50 50 49
rubyboy 5 10 5 10 50 10 50 10
rubykon 5 20 5 22 50 10 50 10
sudoku 5 48 5 51 50 164 50 161
tinygql 5 36 5 37 50 22 50 24
30k_ifelse 5 28 5 27 50 213 50 206
30k_methods 5 38 5 38 50 479 50 474
cfunc_itself 5 346 5 359 50 1147 50 1258
fib 5 127 5 143 50 910 50 933
getivar 5 207 5 325 50 2242 50 2758
keyword_args 5 107 5 108 50 1042 50 1243
loops-times 5 24 5 28 50 48 50 65
object-new 5 322 5 328 50 404 50 388
respond_to 5 133 5 142 50 3253 50 3982
ruby-xor 5 240 5 259 50 803 50 1372
setivar 5 358 5 613 50 3194 50 5914
setivar_object 5 355 5 482 50 700 50 811
setivar_young 5 365 5 482 50 743 50 819
str_concat 5 398 5 461 50 969 50 1226
throw 5 1265 5 1287 50 1771 50 1698

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) 1428075 1184988 209 2202 0 0% 0 0 64.378002
chunky-png (click) 301524 291610 84 1124 1 0% 0 0 33.460089
erubi-rails (click) 1895005 1579007 259 2947 19 0% 0 0 81.524378
hexapdf (click) 1447482 1286200 595 13144 42 0% 0 0 383.880518
liquid-c (click) 474410 420993 115 1744 5 0% 0 0 48.264281
liquid-compile (click) 407855 344636 146 2097 2 0% 0 0 66.300334
liquid-render (click) 584566 471663 132 2310 8 0% 0 0 64.827443
lobsters (click) 8159486 6884456 3161 52969 104 0% 0 0 1801.470812
mail (click) 758203 686529 342 5317 14 0% 0 0 157.682743
psych-load (click) 256656 226471 61 617 3 0% 0 0 19.345842
railsbench (click) 3222597 2684024 1645 16187 52 0% 0 0 466.612919
rubocop (click) 5668128 4791193 2887 50541 110 0% 4 0 1477.420684
ruby-lsp (click) 821898 754856 305 4732 24 0% 0 0 134.532473
sequel (click) 457452 409448 11 94 0 0% 0 0 3.598169
binarytrees (click) 7093 6143 6 52 0 0% 0 0 2.290321
blurhash (click) 50118 50863 27 438 0 0% 0 0 14.274749
erubi (click) 231617 174021 5 97 0 0% 0 0 3.261215
etanni (click) 30101 29597 8 88 0 0% 0 0 2.97942
fannkuchredux (click) 23031 13626 3 249 0 0% 0 0 7.39211
fluentd (click) 388307 294986 7 93 0 0% 0 0 3.191668
graphql (click) 402867 364669 66 676 0 0% 0 0 20.927978
graphql-native (click) 365753 338812 37 255 0 0% 0 0 8.662125
lee (click) 278625 211663 45 749 0 0% 0 0 23.729666
matmul (click) 10657 3512 8 109 0 0% 0 0 3.513035
nbody (click) 13050 17086 6 172 0 0% 0 0 4.427092
nqueens (click) 20163 27348 5 239 0 0% 0 0 6.877266
optcarrot (click) 318856 234467 188 4395 34 0% 0 0 103.423985
protoboeuf (click) 150678 129601 12 1479 0 0% 0 0 42.03598
protoboeuf-encode (click) 221062 212146 14 1220 0 0% 0 0 31.595121
rack (click) 238575 230314 32 385 0 0% 0 0 10.319637
ruby-json (click) 23776 20731 8 178 0 0% 0 0 5.047338
rubyboy (click) 664686 615922 177 5803 40 0% 0 0 144.040786
rubykon (click) 133501 111856 137 1482 3 0% 0 0 42.577098
sudoku (click) 45311 40871 7 516 0 0% 0 0 15.597009
tinygql (click) 272349 217751 58 762 5 0% 0 0 21.618604
30k_ifelse (click) 5658774 5284843 9259 51667 0 0% 0 0 1419.900486
30k_methods (click) 2234569 1592883 5778 19351 0 0% 0 0 455.182791
cfunc_itself (click) 5130 4086 4 47 0 0% 0 0 1.34071
fib (click) 2599 2861 3 26 0 0% 0 0 0.976946
getivar (click) 3501 4713 3 51 0 0% 0 0 1.335763
keyword_args (click) 6320 4813 5 49 0 0% 0 0 1.606702
loops-times (click) 6688 7405 5 70 0 0% 0 0 2.328481
object-new (click) 1918 2093 2 22 0 0% 0 0 0.857033
respond_to (click) 5868 6227 4 62 0 0% 0 0 1.749426
ruby-xor (click) 5331 6009 4 64 0 0% 0 0 1.881203
setivar (click) 2652 3389 3 31 0 0% 0 0 1.016033
setivar_object (click) 3181 3537 3 33 0 0% 0 0 1.113603
setivar_young (click) 3891 4259 4 41 0 0% 0 0 1.317818
str_concat (click) 5469 6016 6 62 0 0% 0 0 2.029923
throw (click) 5848 4291 5 46 0 0% 0 0 1.572619

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.