YJIT Benchmarks

Details for Benchmarks at 2021-09-16 19:09:27

Overall YJIT is 23.3% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 18.5% 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 10 118 10 173
liquid-render 10 99 10 111 10 128
mail 10 120 10 123 10 127
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 10 324 10 266
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 10 209 10 339 10 480
fib 10 84 10 307 10 340
getivar 10 202 10 211 10 525
respond_to 10 78 10 88 10 113
setivar 10 293 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) 1075992 820396 185 1147 0 0% 0 0 0
liquid-render (click) 437970 351495 143 1223 92 7% 0 0 1
mail (click) 919128 703956 337 4684 125 2% 0 0 39
psych-load (click) 173799 137063 56 398 1 0% 0 0 0
railsbench (click) 5168812 3064507 1292 49015 40246 82% 0 0 26
binarytrees (click) 106554 81884 9 47 0 0% 0 0 0
fannkuchredux (click) 123578 96099 6 203 0 0% 0 0 0
jekyll (click) 2343704 1742770 335 9973 6513 65% 0 0 0
lee (click) 223463 168682 85 1042 111 10% 1 0 13
nbody (click) 116346 89863 8 149 0 0% 0 0 0
optcarrot (click) 642426 574948 286 5570 20 0% 0 0 0
30k_ifelse (click) 5527354 4883270 9261 57797 0 0% 0 0 0
30k_methods (click) 2099642 1809220 5780 19352 0 0% 0 0 0
cfunc_itself (click) 105466 80667 6 40 0 0% 0 0 0
fib (click) 104058 80240 6 29 0 0% 0 0 0
getivar (click) 106298 83327 6 56 0 0% 0 0 0
respond_to (click) 107642 82116 6 55 0 0% 0 0 0
setivar (click) 106234 81636 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.