YJIT Benchmarks

Details for Benchmarks at 2021-09-01 21:00:24

Overall YJIT is 22.1% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 12.6% 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 10 126 10 120 10 170
liquid-render 10 99 10 112 10 125
psych-load 10 10 10 10 10 10
railsbench 10 10 10 10 10 10
binarytrees 10 45 10 69 10 56
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 10 164
optcarrot 10 10 10 10 10 10
30k_ifelse 10 10 10 10 10 51
30k_methods 10 10 10 10 10 18
cfunc_itself 10 213 10 337 10 478
fib 10 88 10 307 10 334
getivar 10 211 10 211 10 528
respond_to 10 80 10 89 10 118
setivar 10 273 10 265 10 460

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) 1024422 898586 185 ? 0 0
liquid-render (click) 405472 370226 144 ? 0 0
psych-load (click) 166578 150020 57 ? 0 0
railsbench (click) 5229050 3237192 1291 ? 0 0
binarytrees (click) 106373 95058 10 ? 0 0
fannkuchredux (click) 105733 94638 7 ? 0 0
jekyll (click) 2234342 1840200 335 ? 0 0
lee (click) 208818 188122 86 ? 1 0
nbody (click) 104581 93980 8 ? 0 0
optcarrot (click) 630917 638998 287 ? 0 0
30k_ifelse (click) 5561285 5507692 9262 ? 0 0
30k_methods (click) 2191173 2277254 5781 ? 0 0
cfunc_itself (click) 104517 93608 7 ? 0 0
fib (click) 103109 92612 7 ? 0 0
getivar (click) 104709 95192 7 ? 0 0
respond_to (click) 106821 95482 7 ? 0 0
setivar (click) 104965 93836 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.