YJIT Benchmarks

Details for Benchmarks at 2021-09-14 19:09:20

Overall YJIT is 22.0% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 15.6% 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 10 123 10 118 10 171
liquid-render 10 100 10 111 10 126
mail 10 117 10 124 10 124
psych-load 10 10 10 10 10 10
railsbench 10 10 10 10 10 10
binarytrees 10 41 10 69 10 55
fannkuchredux 10 10 10 10 10 10
jekyll 10 10 10 10 10 10
lee 10 10 10 13 10 15
nbody 10 167 10 324 10 270
optcarrot 10 10 10 10 10 10
30k_ifelse 10 10 10 10 10 49
30k_methods 10 10 10 10 10 18
cfunc_itself 10 201 10 338 10 482
fib 10 91 10 306 10 330
getivar 10 205 10 210 10 528
respond_to 10 77 10 90 10 116
setivar 10 282 10 265 10 435

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) 1092198 842580 185 ? 0 0
liquid-render (click) 443616 361784 144 ? 0 0
mail (click) 919718 715094 337 ? 0 0
psych-load (click) 175858 141360 57 ? 0 0
railsbench (click) 5408250 3113482 1292 ? 0 0
binarytrees (click) 107781 84572 10 ? 0 0
fannkuchredux (click) 108357 84986 7 ? 0 0
jekyll (click) 2387558 1769790 335 ? 0 0
lee (click) 225714 173806 86 ? 1 0
nbody (click) 118213 93322 9 ? 0 0
optcarrot (click) 647749 595030 287 ? 0 0
30k_ifelse (click) 5711109 5059346 9262 ? 0 0
30k_methods (click) 2193285 1874412 5781 ? 0 0
cfunc_itself (click) 107013 83478 7 ? 0 0
fib (click) 105285 82838 7 ? 0 0
getivar (click) 107141 85934 7 ? 0 0
respond_to (click) 109061 84964 7 ? 0 0
setivar (click) 107525 84406 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.