YJIT Benchmarks

Details for Benchmarks at 2021-09-15 19:09:43

Overall YJIT is 22.2% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 18.2% 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 10 121 10 119 10 172
liquid-render 10 98 10 107 10 127
mail 10 118 10 121 10 123
psych-load 10 10 10 10 10 10
railsbench 10 10 10 10 10 10
binarytrees 10 42 10 68 10 57
fannkuchredux 10 10 10 10 10 10
jekyll 10 10 10 10 10 10
lee 10 10 10 13 10 16
nbody 10 173 10 331 10 267
optcarrot 10 10 10 10 10 10
30k_ifelse 10 10 10 10 10 49
30k_methods 10 10 10 10 10 18
cfunc_itself 10 212 10 338 10 476
fib 10 87 10 306 10 339
getivar 10 201 10 212 10 528
respond_to 10 77 10 90 10 113
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) 1072408 817971 185 ? 0 0
liquid-render (click) 438546 351812 143 ? 0 0
mail (click) 919128 704258 337 ? 0 0
psych-load (click) 173799 137063 56 ? 0 0
railsbench (click) 5165740 3062066 1292 ? 0 0
binarytrees (click) 106554 81884 9 ? 0 0
fannkuchredux (click) 123066 95758 6 ? 0 0
jekyll (click) 2339928 1739792 335 ? 0 0
lee (click) 223015 168436 85 ? 1 0
nbody (click) 116538 89958 8 ? 0 0
optcarrot (click) 642810 575194 286 ? 0 0
30k_ifelse (click) 5527546 4883403 9261 ? 0 0
30k_methods (click) 2099642 1809220 5780 ? 0 0
cfunc_itself (click) 105914 80913 6 ? 0 0
fib (click) 103930 80145 6 ? 0 0
getivar (click) 106234 83327 6 ? 0 0
respond_to (click) 107834 82211 6 ? 0 0
setivar (click) 106234 81636 6 ? 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.