YJIT Benchmarks

Details for Benchmarks at 2021-09-13 19:12:28

Overall YJIT is 23.6% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 18.0% 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 10 168
liquid-render 10 100 10 112 10 128
mail 10 118 10 120 10 132
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 10 168 10 273 10 171
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 10 202 10 338 10 484
fib 10 88 10 307 10 333
getivar 10 205 10 211 10 528
respond_to 10 78 10 90 10 112
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) 1067430 823714 185 ? 0 0
liquid-render (click) 428064 348738 144 ? 0 0
mail (click) 773222 613106 337 ? 0 0
psych-load (click) 175922 141266 57 ? 0 0
railsbench (click) 5338618 3058350 1292 ? 0 0
binarytrees (click) 107589 84388 10 ? 0 0
fannkuchredux (click) 107205 84210 7 ? 0 0
jekyll (click) 2349862 1735350 335 ? 0 0
lee (click) 220530 170086 86 ? 1 0
nbody (click) 106565 84052 8 ? 0 0
optcarrot (click) 635461 577086 287 ? 0 0
30k_ifelse (click) 5562373 4770760 9262 ? 0 0
30k_methods (click) 2192517 1873862 5781 ? 0 0
cfunc_itself (click) 106117 82960 7 ? 0 0
fib (click) 104581 82328 7 ? 0 0
getivar (click) 106693 85380 7 ? 0 0
respond_to (click) 108421 84544 7 ? 0 0
setivar (click) 106309 83568 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.