YJIT Benchmarks

Details for Benchmarks at 2021-09-20 19:09:21

Overall YJIT is 21.6% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 13.8% 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 10 122 10 117 10 170
liquid-render 10 96 10 112 10 126
mail 10 120 10 119 10 124
psych-load 10 10 10 10 10 10
railsbench 10 10 10 10 10 10
binarytrees 10 43 10 69 10 59
fannkuchredux 10 10 10 10 10 10
jekyll 10 10 10 10 10 10
lee 10 10 10 13 10 15
nbody 10 173 10 325 10 267
optcarrot 10 10 10 10 10 10
30k_ifelse 10 10 10 10 10 51
30k_methods 10 10 10 10 10 18
cfunc_itself 10 212 10 335 10 477
fib 10 82 10 307 10 340
getivar 10 200 10 211 10 526
respond_to 10 77 10 90 10 113
setivar 10 289 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) 1075672 820976 185 1136 0 0% 0 0 0
liquid-render (click) 438610 352271 143 1227 92 7% 0 0 1
mail (click) 907544 694555 337 4567 125 2% 0 0 39
psych-load (click) 173799 137063 56 398 1 0% 0 0 0
railsbench (click) 5189100 3080085 1292 49183 40247 81% 0 0 26
binarytrees (click) 107130 82228 9 49 0 0% 0 0 0
fannkuchredux (click) 123578 96099 6 203 0 0% 0 0 0
jekyll (click) 2349528 1748353 335 9987 6515 65% 0 0 0
lee (click) 223975 169479 85 1045 111 10% 1 0 13
nbody (click) 116346 89863 8 149 0 0% 0 0 0
optcarrot (click) 641658 575657 286 5570 20 0% 0 0 0
30k_ifelse (click) 5527610 4883403 9261 57795 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) 104442 80486 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) 106234 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.