YJIT Benchmarks

Details for Benchmarks at 2021-09-12 19:09:10

Overall YJIT is 18.5% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 14.5% 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.

Want Raw Graphs and CSV?

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 10 125 10 119 10 170
liquid-render 10 98 10 113 10 123
mail 10 119 10 121 10 129
psych-load 10 10 10 10 10 10
railsbench 10 10 10 10 10 10
binarytrees 10 42 10 69 10 56
fannkuchredux 10 10 10 10 10 10
jekyll 10 10 10 10 10 10
lee 10 10 10 13 10 16
nbody 10 166 10 273 10 167
optcarrot 10 10 10 10 10 10
30k_ifelse 10 10 10 10 10 52
30k_methods 10 10 10 10 10 19
cfunc_itself 10 211 10 338 10 475
fib 10 90 10 307 10 333
getivar 10 205 10 211 10 528
respond_to 10 77 10 89 10 121
setivar 10 271 10 263 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) 1052518 809318 185 ? 0 0
liquid-render (click) 415840 335004 144 ? 0 0
mail (click) 756390 596642 337 ? 0 0
psych-load (click) 169074 133306 57 ? 0 0
railsbench (click) 5304634 3025966 1293 ? 0 0
binarytrees (click) 105797 82374 10 ? 0 0
fannkuchredux (click) 105925 82552 7 ? 0 0
jekyll (click) 2290342 1681086 335 ? 0 0
lee (click) 216114 165950 86 ? 1 0
nbody (click) 105093 82426 8 ? 0 0
optcarrot (click) 634053 575328 287 ? 0 0
30k_ifelse (click) 5561157 4769102 9262 ? 0 0
30k_methods (click) 2191685 1872692 5781 ? 0 0
cfunc_itself (click) 104837 81302 7 ? 0 0
fib (click) 103429 80770 7 ? 0 0
getivar (click) 104901 83366 7 ? 0 0
respond_to (click) 107013 82786 7 ? 0 0
setivar (click) 105477 82398 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.