YJIT Benchmarks

Details for Benchmarks at 2022-05-18 19:12:57

Overall YJIT is 30.6% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 27.7% 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 5 160 75 160 20 160
hexapdf 5 15 20 15
liquid-render 5 134 75 134 20 134
mail 5 107 75 107 20 107
psych-load 5 15 75 15 20 15
railsbench 5 15 75 15 20 15
binarytrees 5 62 75 62 20 62
chunky_png 5 29 75 29 20 29
discourse 5 34 75 34 20 34
erubi 5 45 75 45 20 45
erubi_rails 5 820 75 820 20 820
fannkuchredux 5 15 51 15 20 15
lee 5 22 75 22 20 22
nbody 5 271 75 271 20 271
optcarrot 5 15 75 15 20 15
rubykon 5 15 25 15 20 15
30k_ifelse 5 56 75 56 20 56
30k_methods 5 22 29 22 20 22
cfunc_itself 5 440 75 440 20 440
fib 5 319 75 319 20 319
getivar 5 766 75 766 20 766
keyword_args 5 379 75 379 20 379
respond_to 5 108 75 108 20 108
setivar 5 1863 75 1863 20 1863
str_concat 5 204 75 204 20 204

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) 1015707 755255 131 1244 0 0% 0 0 0
hexapdf (click) 1119707 878949 682 7744 9 0% 0 0 0
liquid-render (click) 510747 391016 150 1586 2 0% 0 0 0
mail (click) 890715 643988 374 5309 15 0% 0 0 0
psych-load (click) 339483 255174 68 457 1 0% 0 0 0
railsbench (click) 2637915 1927139 1436 9838 16 0% 0 0 0
binarytrees (click) 173275 129880 13 58 0 0% 0 0 0
chunky_png (click) 376283 281480 88 992 0 0% 0 0 0
discourse (click) 5938395 4406981 3196 25366 84 0% 2 0 0
erubi (click) 319323 242736 10 79 0 0% 0 0 0
erubi_rails (click) 1953371 1404923 300 2024 4 0% 0 0 0
fannkuchredux (click) 187291 140578 10 188 0 0% 0 0 0
lee (click) 378267 283827 58 622 0 0% 0 0 0
nbody (click) 182747 137081 12 158 0 0% 0 0 0
optcarrot (click) 513947 442330 207 3571 20 0% 0 0 0
rubykon (click) 317979 250778 144 1533 2 0% 0 0 0
30k_ifelse (click) 5562331 4350204 9265 57804 0 0% 0 0 0
30k_methods (click) 2177499 1658666 5784 19361 0 0% 0 0 0
cfunc_itself (click) 171803 128509 10 49 0 0% 0 0 0
fib (click) 170267 128117 10 38 0 0% 0 0 0
getivar (click) 172059 130628 10 65 0 0% 0 0 0
keyword_args (click) 172123 128854 11 51 0 0% 0 0 0
respond_to (click) 173915 129963 10 64 0 0% 0 0 0
setivar (click) 171483 128856 10 38 0 0% 0 0 0
str_concat (click) 171995 129472 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.