YJIT Benchmarks

Details for Benchmarks at 2021-10-03 07:09:34

Overall YJIT is 24.5% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 14.9% 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 10 126 10 119 10 172
liquid-render 10 103 10 111 10 124
mail 10 119 10 123 10 135
psych-load 10 10 10 10 10 10
railsbench 10 10 10 10 10 10
binarytrees 10 42 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 10 330 10 267
optcarrot 10 10 10 10 10 10
30k_ifelse 10 10 10 10 10 52
30k_methods 10 10 10 10 10 17
cfunc_itself 10 209 10 338 10 492
fib 10 89 10 308 10 375
getivar 10 193 10 211 10 528
keyword_args 10 73 10 95 10 72
respond_to 10 74 10 86 10 106
setivar 10 291 10 265 10 491

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) 1086106 839476 185 1169 0 0% 0 0 0
liquid-render (click) 437332 355088 143 1223 92 7% 0 0 1
mail (click) 952410 732964 337 4974 129 2% 0 0 39
psych-load (click) 175146 139378 56 408 1 0% 0 0 0
railsbench (click) 2491057 1926706 1293 9293 256 2% 0 0 26
binarytrees (click) 106493 83028 9 49 0 0% 0 0 0
fannkuchredux (click) 123133 97047 6 203 0 0% 0 0 0
jekyll (click) 1935450 1606871 336 3723 173 4% 0 0 0
lee (click) 223402 169914 85 1043 111 10% 1 0 13
nbody (click) 116477 91152 8 149 0 0% 0 0 0
optcarrot (click) 643069 577712 286 5575 20 0% 0 0 0
30k_ifelse (click) 5554685 4884351 9261 57795 0 0% 0 0 0
30k_methods (click) 2110781 1809922 5780 19352 0 0% 0 0 0
cfunc_itself (click) 104957 81467 6 40 0 0% 0 0 0
fib (click) 103549 81188 6 29 0 0% 0 0 0
getivar (click) 105341 84029 6 56 0 0% 0 0 0
keyword_args (click) 103357 80614 7 22 0 0% 0 0 0
respond_to (click) 107389 83159 6 55 0 0% 0 0 0
setivar (click) 105213 82190 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.