YJIT Benchmarks

Details for Benchmarks at 2025-03-27 03:49:03 UTC

YJIT metrics from the yjit-bench suite using Ruby 1b8e6568e4.

Using the geomean of the headline benchmarks for x86 YJIT 3.5.0dev is
  • 85.1% faster than CRuby 3.5.0dev
  • 4.8% faster than YJIT 3.3.6
On railsbench it is
  • 92.8% faster than CRuby 3.5.0dev
  • 2.5% 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 83 5 86 50 149 50 165
chunky-png 5 32 5 34 50 15 50 32
erubi-rails 5 16 5 16 50 10 50 10
hexapdf 5 10 5 10 50 10 50 10
liquid-c 5 421 5 430 50 591 50 646
liquid-compile 5 407 5 427 50 538 50 567
liquid-render 5 172 5 174 50 403 50 450
lobsters 5 20 5 19 50 10 50 10
mail 5 195 5 199 50 237 50 252
psych-load 5 10 5 10 50 10 50 10
railsbench 5 10 5 10 50 10 50 10
rubocop 5 156 5 156 50 253 50 265
ruby-lsp 5 158 5 165 50 260 50 206
sequel 5 431 5 415 50 601 50 592
binarytrees 5 84 5 87 50 149 50 143
blurhash 5 82 5 87 50 127 50 145
erubi 5 121 5 146 50 99 50 153
etanni 5 90 5 100 50 54 50 73
fannkuchredux 5 52 5 58 50 99 50 108
fluentd 5 64 5 64 50 25 50 31
graphql 5 85 5 85 50 56 50 55
graphql-native 5 40 5 53 50 10 50 15
lee 5 23 5 23 50 10 50 10
matmul 5 51 5 54 50 85 50 97
nbody 5 248 5 281 50 576 50 703
nqueens 5 120 5 130 50 75 50 564
optcarrot 5 10 5 10 50 10 50 10
protoboeuf 5 175 5 185 50 619 50 729
protoboeuf-encode 5 180 5 212 50 329 50 848
rack 5 584 5 633 50 944 50 1041
ruby-json 5 84 5 84 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 52 50 164 50 161
tinygql 5 36 5 38 50 23 50 29
30k_ifelse 5 28 5 28 50 214 50 205
30k_methods 5 38 5 38 50 481 50 476
cfunc_itself 5 345 5 369 50 1147 50 1258
fib 5 127 5 149 50 910 50 933
getivar 5 207 5 327 50 2240 50 2770
keyword_args 5 107 5 109 50 1042 50 1243
loops-times 5 24 5 27 50 47 50 64
object-new 5 323 5 322 50 399 50 386
respond_to 5 133 5 139 50 3256 50 3981
ruby-xor 5 240 5 265 50 803 50 1384
setivar 5 358 5 649 50 3185 50 5928
setivar_object 5 355 5 481 50 699 50 811
setivar_young 5 364 5 480 50 746 50 816
str_concat 5 397 5 475 50 967 50 1222
throw 5 1263 5 1321 50 1772 50 1769

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) 1428655 1193115 209 2202 0 0% 0 0 64.191608
chunky-png (click) 323738 286290 84 1124 1 0% 0 0 32.938799
erubi-rails (click) 1892395 1571500 259 2995 19 0% 0 0 82.906049
hexapdf (click) 1437901 1244352 595 13139 41 0% 0 0 382.670764
liquid-c (click) 504430 430169 115 1744 5 0% 0 0 49.262586
liquid-compile (click) 430489 362666 146 2081 2 0% 0 0 65.440294
liquid-render (click) 608613 516753 132 2310 8 0% 0 0 66.043523
lobsters (click) 8130544 6835836 3159 52669 104 0% 0 0 1803.764457
mail (click) 762630 706086 342 5317 14 0% 0 0 153.874567
psych-load (click) 250603 220537 61 617 3 0% 0 0 19.673933
railsbench (click) 3238459 2681537 1645 16268 52 0% 0 0 474.929621
rubocop (click) 5660416 4751271 2887 50507 110 0% 4 0 1495.38744
ruby-lsp (click) 813928 687732 305 4726 24 0% 0 0 134.549798
sequel (click) 483883 408005 11 94 0 0% 0 0 3.176272
binarytrees (click) 7093 6143 6 52 0 0% 0 0 2.25752
blurhash (click) 50118 50863 27 438 0 0% 0 0 14.156189
erubi (click) 228658 168199 5 97 0 0% 0 0 3.254083
etanni (click) 27158 26329 8 88 0 0% 0 0 2.993504
fannkuchredux (click) 23031 13626 3 249 0 0% 0 0 7.360564
fluentd (click) 389472 345590 7 93 0 0% 0 0 3.241226
graphql (click) 426708 334605 66 676 0 0% 0 0 21.114694
graphql-native (click) 370110 333725 37 255 0 0% 0 0 8.784125
lee (click) 269837 194977 45 749 0 0% 0 0 23.547141
matmul (click) 10657 3512 8 109 0 0% 0 0 3.543363
nbody (click) 13050 17086 6 172 0 0% 0 0 4.416573
nqueens (click) 20163 27348 5 239 0 0% 0 0 6.825842
optcarrot (click) 318856 234467 188 4395 34 0% 0 0 101.218693
protoboeuf (click) 150678 129601 12 1479 0 0% 0 0 42.419214
protoboeuf-encode (click) 221062 212146 14 1220 0 0% 0 0 31.392209
rack (click) 263541 233857 32 385 0 0% 0 0 10.300522
ruby-json (click) 23859 20840 8 178 0 0% 0 0 5.028717
rubyboy (click) 656555 592198 177 5805 40 0% 0 0 144.313105
rubykon (click) 133501 111856 137 1482 3 0% 0 0 42.611774
sudoku (click) 45311 40871 7 516 0 0% 0 0 15.465162
tinygql (click) 272787 249286 58 762 5 0% 0 0 22.124065
30k_ifelse (click) 5658774 5284843 9259 51667 0 0% 0 0 1416.064255
30k_methods (click) 2234569 1592883 5778 19351 0 0% 0 0 454.012461
cfunc_itself (click) 5130 4086 4 47 0 0% 0 0 1.359582
fib (click) 2599 2861 3 26 0 0% 0 0 0.984854
getivar (click) 3501 4713 3 51 0 0% 0 0 1.337911
keyword_args (click) 6320 4813 5 49 0 0% 0 0 1.592061
loops-times (click) 6688 7405 5 70 0 0% 0 0 2.282116
object-new (click) 1918 2093 2 22 0 0% 0 0 0.852003
respond_to (click) 5868 6227 4 62 0 0% 0 0 1.73314
ruby-xor (click) 5331 6009 4 64 0 0% 0 0 1.898751
setivar (click) 2652 3389 3 31 0 0% 0 0 1.00737
setivar_object (click) 3181 3537 3 33 0 0% 0 0 1.101452
setivar_young (click) 3891 4259 4 41 0 0% 0 0 1.304318
str_concat (click) 5469 6016 6 62 0 0% 0 0 1.985993
throw (click) 5848 4291 5 46 0 0% 0 0 1.610854

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.