YJIT Benchmarks

Details for Benchmarks at 2022-08-21 20:14:00

Overall YJIT is 34.3% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 33.3% faster than CRuby!

The basic "faster" measurement is the geomean of all "headlining" x86 benchmarks on this page.

Headlining Benchmarks

These are "headlining" because the "overall" speedup above is based on these benchmarks specifically.

Speed of each Ruby implementation (iterations/second) relative to the CRuby interpreter. Higher is better.

Other Benchmarks

Speed of each Ruby implementation (iterations/second) relative to the CRuby interpreter. Higher is better.

MicroBenchmarks

Speed of each Ruby implementation (iterations/second) relative to the CRuby interpreter. Higher is better.

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Benchmarks Speed Details

Benchmark Memory Usage Details

Number of Iterations and Warmups Tested

bench No JIT warmups No JIT iters MJIT warmups MJIT iters YJIT warmups YJIT iters
activerecord 5 191 75 191 20 191
hexapdf 5 15 20 15
liquid-render 5 159 75 159 20 159
mail 5 127 75 127 20 127
psych-load 5 15 75 15 20 15
railsbench 5 15 75 15 20 15
binarytrees 5 63 75 63 20 63
chunky_png 5 30 75 30 20 30
erubi 5 61 75 61 20 61
erubi_rails 5 1021 75 1021 20 1021
fannkuchredux 5 15 75 15 20 15
lee 5 20 75 20 20 20
nbody 5 260 75 260 20 260
optcarrot 5 15 75 15 20 15
rubykon 5 15 36 15 20 15
30k_ifelse 5 56 66 56 20 56
30k_methods 5 22 22 22 20 22
cfunc_itself 5 416 75 416 20 416
fib 5 315 75 315 20 315
getivar 5 635 75 635 20 635
keyword_args 5 357 75 357 20 357
respond_to 5 102 75 102 20 102
setivar 5 980 75 980 20 980
str_concat 5 471 75 471 20 471

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
activerecord (click) 1033755 777876 131 1264 0 0% 0 0 0
hexapdf (click) 1149531 923546 682 8011 9 0% 0 0 0
liquid-render (click) 518619 402826 150 1671 2 0% 0 0 0
mail (click) 893659 645122 374 5295 17 0% 0 0 0
psych-load (click) 345627 261860 68 482 1 0% 0 0 0
railsbench (click) 2657115 1967242 1436 10045 16 0% 0 0 0
binarytrees (click) 171099 127751 13 58 0 0% 0 0 0
chunky_png (click) 388763 290326 88 1033 0 0% 0 0 0
erubi (click) 331419 252432 10 79 0 0% 0 0 0
erubi_rails (click) 1962459 1429133 300 2032 4 0% 0 0 0
fannkuchredux (click) 185051 137519 10 196 0 0% 0 0 0
lee (click) 383323 289125 58 632 0 0% 0 0 0
nbody (click) 181659 136946 12 171 0 0% 0 0 0
optcarrot (click) 513051 442113 207 3588 20 0% 0 0 0
rubykon (click) 322843 258417 144 1597 1 0% 0 0 0
30k_ifelse (click) 5560155 4348219 9265 57804 0 0% 0 0 0
30k_methods (click) 2175323 1656681 5784 19361 0 0% 0 0 0
cfunc_itself (click) 169627 126524 10 49 0 0% 0 0 0
fib (click) 168091 126132 10 38 0 0% 0 0 0
getivar (click) 169819 128219 10 65 0 0% 0 0 0
keyword_args (click) 170459 127165 11 51 0 0% 0 0 0
respond_to (click) 171739 127978 10 64 0 0% 0 0 0
setivar (click) 169755 127039 10 38 0 0% 0 0 0
str_concat (click) 169755 127371 12 62 0 0% 0 0 0

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.