YJIT Benchmarks

Details for Benchmarks at 2021-09-04 11:09:53

Overall YJIT is 22.0% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 14.8% 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 10 127 10 119 10 171
liquid-render 10 99 10 111 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 50
30k_methods 10 10 10 10 10 18
cfunc_itself 10 213 10 337 10 464
fib 10 89 10 307 10 333
getivar 10 211 10 211 10 528
respond_to 10 77 10 89 10 119
setivar 10 274 10 265 10 463

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) 1024742 898810 185 ? 0 0
liquid-render (click) 409440 373996 144 ? 0 0
psych-load (click) 166450 149920 57 ? 0 0
railsbench (click) 5233594 3240894 1291 ? 0 0
binarytrees (click) 105861 94644 10 ? 0 0
fannkuchredux (click) 105733 94638 7 ? 0 0
jekyll (click) 2237606 1842994 335 ? 0 0
lee (click) 209330 188536 86 ? 1 0
nbody (click) 104709 94080 8 ? 0 0
optcarrot (click) 631429 639412 287 ? 0 0
30k_ifelse (click) 5560773 5507278 9262 ? 0 0
30k_methods (click) 2191045 2277154 5781 ? 0 0
cfunc_itself (click) 104517 93608 7 ? 0 0
fib (click) 103237 92712 7 ? 0 0
getivar (click) 104837 95292 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.