YJIT Benchmarks

Details for Benchmarks at 2021-11-12 07:10:20

Overall YJIT is 31.1% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 25.9% 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 10 125 10 118 10 178
hexapdf 10 10 10 10 10 10
liquid-render 10 104 10 114 10 165
mail 10 117 10 122 10 131
psych-load 10 10 10 10 10 10
railsbench 10 10 10 10 10 10
binarytrees 10 46 10 70 10 61
fannkuchredux 10 10 10 10 10 10
jekyll 10 10 10 10 10 10
lee 10 10 10 14 10 15
nbody 10 173 10 331 10 258
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 10 210 10 327 10 470
fib 10 92 10 308 10 374
getivar 10 195 10 211 10 539
keyword_args 10 75 10 97 10 430
respond_to 10 78 10 89 10 117
setivar 10 286 10 263 10 500

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) 967722 677868 184 1168 0 0% 0 0 0
hexapdf (click) 1088426 813375 605 8080 649 8% 0 0 320
liquid-render (click) 469303 342491 143 1438 95 6% 0 0 1
mail (click) 873578 601132 339 5418 124 2% 0 0 39
psych-load (click) 298145 212106 57 436 1 0% 0 0 0
railsbench (click) 2587298 1797139 1295 9681 263 2% 0 0 26
binarytrees (click) 113061 80587 9 48 0 0% 0 0 0
fannkuchredux (click) 129317 92618 6 202 0 0% 0 0 0
jekyll (click) 1884458 1390294 336 3880 179 4% 0 0 0
lee (click) 344554 239446 44 566 70 12% 0 0 12
nbody (click) 122469 87422 8 148 0 0% 0 0 0
optcarrot (click) 451621 381143 196 3566 20 0% 0 0 0
rubykon (click) 253797 196235 138 1516 1 0% 0 0 0
30k_ifelse (click) 5502501 4300932 9261 57794 0 0% 0 0 0
30k_methods (click) 2117221 1609178 5780 19351 0 0% 0 0 0
cfunc_itself (click) 111845 79237 6 39 0 0% 0 0 0
fib (click) 110309 78845 6 28 0 0% 0 0 0
getivar (click) 111525 81007 6 55 0 0% 0 0 0
keyword_args (click) 112997 80206 7 41 0 0% 0 0 0
respond_to (click) 114021 80571 6 54 0 0% 0 0 0
setivar (click) 112293 80208 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.