YJIT Benchmarks

Details for Benchmarks at 2021-09-04 15:10:21

Overall YJIT is 23.6% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 18.3% 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 10 120 10 173
liquid-render 10 99 10 112 10 124
psych-load 10 10 10 10 10 10
railsbench 10 10 10 10 10 10
binarytrees 10 45 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 10 164 10 273 10 165
optcarrot 10 10 10 10 10 10
30k_ifelse 10 10 10 10 10 52
30k_methods 10 10 10 10 10 18
cfunc_itself 10 213 10 339 10 472
fib 10 87 10 308 10 334
getivar 10 211 10 211 10 528
respond_to 10 79 10 90 10 120
setivar 10 274 10 265 10 462

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) 1026406 900200 185 ? 0 0
liquid-render (click) 406048 370944 144 ? 0 0
psych-load (click) 166450 149920 57 ? 0 0
railsbench (click) 5233978 3241276 1291 ? 0 0
binarytrees (click) 105989 94744 10 ? 0 0
fannkuchredux (click) 105733 94638 7 ? 0 0
jekyll (click) 2233318 1839156 335 ? 0 0
lee (click) 209330 188536 86 ? 1 0
nbody (click) 104581 93980 8 ? 0 0
optcarrot (click) 631429 639412 287 ? 0 0
30k_ifelse (click) 5560773 5507278 9262 ? 0 0
30k_methods (click) 2191173 2277254 5781 ? 0 0
cfunc_itself (click) 105029 94022 7 ? 0 0
fib (click) 103109 92612 7 ? 0 0
getivar (click) 104837 95292 7 ? 0 0
respond_to (click) 106821 95482 7 ? 0 0
setivar (click) 104837 93736 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.