YJIT Benchmarks

Details for Benchmarks at 2021-11-14 19:09:54

Overall YJIT is 28.9% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 20.8% 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 MJIT3.0 warmups MJIT3.0 iters YJIT warmups YJIT iters
activerecord 10 127 10 115 10 181
hexapdf 10 10 10 10 10 10
liquid-render 10 106 10 113 10 158
mail 10 115 10 123 10 129
psych-load 10 10 10 10 10 10
railsbench 10 10 10 10 10 10
binarytrees 10 45 10 76 10 61
fannkuchredux 10 10 10 10 10 10
jekyll 10 10 10 10 10 10
lee 10 10 10 12 10 16
nbody 10 171 10 316 10 249
optcarrot 10 10 10 10 10 10
rubykon 10 10 10 10 10 10
30k_ifelse 10 10 10 10 10 54
30k_methods 10 10 10 10 10 17
cfunc_itself 10 202 10 313 10 497
fib 10 93 10 322 10 374
getivar 10 220 10 212 10 541
keyword_args 10 77 10 96 10 422
respond_to 10 77 10 97 10 119
setivar 10 293 10 284 10 463

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) 968554 678106 184 1161 0 0% 0 0 0
hexapdf (click) 1082602 809629 595 8011 614 7% 0 0 320
liquid-render (click) 470391 343055 143 1455 95 6% 0 0 1
mail (click) 873770 601168 339 5421 124 2% 0 0 39
psych-load (click) 296545 211258 57 423 1 0% 0 0 0
railsbench (click) 2584610 1796771 1295 9652 264 2% 0 0 26
binarytrees (click) 113317 80608 9 48 0 0% 0 0 0
fannkuchredux (click) 129317 92618 6 202 0 0% 0 0 0
jekyll (click) 1884970 1391178 336 3906 179 4% 0 0 0
lee (click) 345194 239795 44 566 70 12% 0 0 12
nbody (click) 122725 87443 8 148 0 0% 0 0 0
optcarrot (click) 451685 381143 196 3566 20 0% 0 0 0
rubykon (click) 254501 196587 138 1520 1 0% 0 0 0
30k_ifelse (click) 5502437 4300932 9261 57794 0 0% 0 0 0
30k_methods (click) 2117605 1609394 5780 19351 0 0% 0 0 0
cfunc_itself (click) 111909 79237 6 39 0 0% 0 0 0
fib (click) 110373 78845 6 28 0 0% 0 0 0
getivar (click) 112101 81356 6 55 0 0% 0 0 0
keyword_args (click) 112741 79878 7 41 0 0% 0 0 0
respond_to (click) 114021 80571 6 54 0 0% 0 0 0
setivar (click) 111973 79880 6 28 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.