YJIT Benchmarks

Details for Benchmarks at 2021-09-20 07:09:45

Overall YJIT is 23.7% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 14.8% 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 10 124 10 119 10 174
liquid-render 10 95 10 112 10 128
mail 10 119 10 122 10 127
psych-load 10 10 10 10 10 10
railsbench 10 10 10 10 10 10
binarytrees 10 43 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 10 173 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 10 212 10 339 10 484
fib 10 87 10 308 10 340
getivar 10 201 10 213 10 527
respond_to 10 75 10 91 10 112
setivar 10 293 10 265 10 443

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) 1076056 821046 185 1134 0 0% 0 0 0
liquid-render (click) 440786 353561 143 1237 93 7% 0 0 1
mail (click) 921432 705912 337 4701 125 2% 0 0 39
psych-load (click) 173863 137063 56 398 1 0% 0 0 0
railsbench (click) 5187564 3079253 1292 49191 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) 2344920 1745160 335 9936 6514 65% 0 0 0
lee (click) 223527 169203 85 1044 110 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) 5527546 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) 104506 80486 6 29 0 0% 0 0 0
getivar (click) 105914 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.