YJIT Benchmarks

Details for Benchmarks at 2021-09-21 07:09:55

Overall YJIT is 26.1% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 17.3% 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 10 122 10 172
liquid-render 10 96 10 112 10 126
mail 10 117 10 120 10 133
psych-load 10 10 10 10 10 10
railsbench 10 10 10 10 10 10
binarytrees 10 43 10 69 10 57
fannkuchredux 10 10 10 10 10 10
jekyll 10 10 10 10 10 10
lee 10 10 10 13 10 15
nbody 10 173 10 331 10 266
optcarrot 10 10 10 10 10 10
30k_ifelse 10 10 10 10 10 51
30k_methods 10 10 10 10 10 19
cfunc_itself 10 209 10 335 10 478
fib 10 88 10 304 10 340
getivar 10 201 10 211 10 527
respond_to 10 78 10 90 10 114
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) 1076312 821478 185 1137 0 0% 0 0 0
liquid-render (click) 437906 351872 143 1222 92 7% 0 0 1
mail (click) 939480 718639 337 4867 125 2% 0 0 39
psych-load (click) 173799 137063 56 398 1 0% 0 0 0
railsbench (click) 5185004 3078303 1292 49157 40247 81% 0 0 26
binarytrees (click) 106938 82133 9 49 0 0% 0 0 0
fannkuchredux (click) 123002 95758 6 203 0 0% 0 0 0
jekyll (click) 2347608 1746698 335 9944 6514 65% 0 0 0
lee (click) 223527 169233 85 1045 111 10% 1 0 13
nbody (click) 116346 89863 8 149 0 0% 0 0 0
optcarrot (click) 641274 575411 286 5570 20 0% 0 0 0
30k_ifelse (click) 5527546 4883403 9261 57795 0 0% 0 0 0
30k_methods (click) 2099578 1809220 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) 105850 83081 6 56 0 0% 0 0 0
respond_to (click) 107642 82116 6 55 0 0% 0 0 0
setivar (click) 105850 81390 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.