YJIT Benchmarks

Details for Benchmarks at 2021-09-18 07:10:48

Overall YJIT is 22.7% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 18.0% 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 10 120 10 117 10 172
liquid-render 10 98 10 109 10 126
mail 10 118 10 121 10 126
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 16
nbody 10 173 10 330 10 267
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 10 338 10 480
fib 10 88 10 308 10 340
getivar 10 201 10 211 10 527
respond_to 10 75 10 90 10 113
setivar 10 291 10 265 10 442

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) 1075288 820705 185 1132 0 0% 0 0 0
liquid-render (click) 439762 352862 143 1241 92 7% 0 0 1
mail (click) 908568 695111 337 4573 125 2% 0 0 39
psych-load (click) 173799 137063 56 398 1 0% 0 0 0
railsbench (click) 5177772 3072320 1292 49093 40247 81% 0 0 26
binarytrees (click) 106938 82133 9 49 0 0% 0 0 0
fannkuchredux (click) 123194 95853 6 203 0 0% 0 0 0
jekyll (click) 2349976 1748865 335 9967 6514 65% 0 0 0
lee (click) 223911 169479 85 1045 111 10% 1 0 13
nbody (click) 116538 89958 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) 2099642 1809220 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) 105850 83081 6 56 0 0% 0 0 0
respond_to (click) 108154 82457 6 55 0 0% 0 0 0
setivar (click) 105914 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.