YJIT Benchmarks

Details for Benchmarks at 2021-09-17 19:09:50

Overall YJIT is 22.3% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 15.4% 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 10 124 10 119 10 170
liquid-render 10 97 10 109 10 127
mail 10 120 10 122 10 123
psych-load 10 10 10 10 10 10
railsbench 10 10 10 10 10 10
binarytrees 10 42 10 69 10 58
fannkuchredux 10 10 10 10 10 10
jekyll 10 10 10 10 10 10
lee 10 10 10 13 10 15
nbody 10 170 10 330 10 266
optcarrot 10 10 10 10 10 10
30k_ifelse 10 10 10 10 10 49
30k_methods 10 10 10 10 10 18
cfunc_itself 10 211 10 338 10 478
fib 10 87 10 306 10 340
getivar 10 200 10 196 10 527
respond_to 10 75 10 90 10 113
setivar 10 291 10 265 10 444

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) 1076120 821174 185 1141 0 0% 0 0 0
liquid-render (click) 437906 351872 143 1222 92 7% 0 0 1
mail (click) 905176 692983 337 4546 125 2% 0 0 39
psych-load (click) 173863 137063 56 398 1 0% 0 0 0
railsbench (click) 5188204 3080691 1292 49189 40247 81% 0 0 26
binarytrees (click) 107450 82474 9 49 0 0% 0 0 0
fannkuchredux (click) 123002 95758 6 203 0 0% 0 0 0
jekyll (click) 2348696 1747011 335 9965 6515 65% 0 0 0
lee (click) 223527 169203 85 1044 110 10% 1 0 13
nbody (click) 116538 89958 8 149 0 0% 0 0 0
optcarrot (click) 641658 575657 286 5570 20 0% 0 0 0
30k_ifelse (click) 5527226 4883175 9261 57797 0 0% 0 0 0
30k_methods (click) 2099194 1808974 5780 19352 0 0% 0 0 0
cfunc_itself (click) 105850 80913 6 40 0 0% 0 0 0
fib (click) 104058 80240 6 29 0 0% 0 0 0
getivar (click) 106298 83327 6 56 0 0% 0 0 0
respond_to (click) 107834 82211 6 55 0 0% 0 0 0
setivar (click) 106298 81636 6 29 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.