YJIT Benchmarks

Details for Benchmarks at 2021-09-10 19:09:32

Overall YJIT is 20.8% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 20.2% 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 10 120 10 166
liquid-render 10 99 10 112 10 123
mail 10 119 10 122 10 133
psych-load 10 10 10 10 10 10
railsbench 10 10 10 10 10 10
binarytrees 10 43 10 68 10 58
fannkuchredux 10 10 10 10 10 10
jekyll 10 10 10 10 10 10
lee 10 10 10 13 10 15
nbody 10 165 10 273 10 166
optcarrot 10 10 10 10 10 10
30k_ifelse 10 10 10 10 10 50
30k_methods 10 10 10 10 10 18
cfunc_itself 10 208 10 338 10 480
fib 10 91 10 308 10 333
getivar 10 205 10 211 10 527
respond_to 10 79 10 90 10 121
setivar 10 270 10 265 10 461

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) 1050662 807936 185 ? 0 0
liquid-render (click) 409888 330500 144 ? 0 0
mail (click) 765734 605118 337 ? 0 0
psych-load (click) 168690 132818 57 ? 0 0
railsbench (click) 5313786 3031826 1293 ? 0 0
binarytrees (click) 105925 82474 10 ? 0 0
fannkuchredux (click) 106245 82940 7 ? 0 0
jekyll (click) 2289446 1680040 335 ? 0 0
lee (click) 216114 165950 86 ? 1 0
nbody (click) 105093 82426 8 ? 0 0
optcarrot (click) 634437 575816 287 ? 0 0
30k_ifelse (click) 5561477 4769578 9262 ? 0 0
30k_methods (click) 2191237 1872204 5781 ? 0 0
cfunc_itself (click) 104837 81302 7 ? 0 0
fib (click) 103685 81158 7 ? 0 0
getivar (click) 104901 83366 7 ? 0 0
respond_to (click) 107141 82886 7 ? 0 0
setivar (click) 105349 82298 7 ? 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.