YJIT Benchmarks

Details for Benchmarks at 2021-11-01 11:02:54

Overall YJIT is 26.8% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 23.8% 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 10 124 10 116 10 168
hexapdf 10 10 10 10 10 10
liquid-render 10 105 10 112 10 147
mail 10 115 10 121 10 129
psych-load 10 10 10 10 10 10
railsbench 10 10 10 10 10 10
binarytrees 10 46 10 69 10 60
fannkuchredux 10 10 10 10 10 10
jekyll 10 10 10 10 10 10
lee 10 10 10 13 10 15
nbody 10 172 10 331 10 256
optcarrot 10 10 10 10 10 10
rubykon 10 10 10 10 10 10
30k_ifelse 10 10 10 10 10 50
30k_methods 10 10 10 10 10 17
cfunc_itself 10 209 10 339 10 347
fib 10 92 10 307 10 374
getivar 10 223 10 211 10 530
keyword_args 10 74 10 98 10 423
respond_to 10 79 10 90 10 119
setivar 10 257 10 263 10 491

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) 1115994 870029 185 1160 0 0% 0 0 0
hexapdf (click) 1075124 899505 603 7842 619 7% 0 0 320
liquid-render (click) 459393 376194 143 1275 96 7% 0 0 1
mail (click) 839348 650547 339 5044 124 2% 0 0 39
psych-load (click) 187562 151247 56 409 1 0% 0 0 0
railsbench (click) 2596913 2026528 1294 9559 262 2% 0 0 26
binarytrees (click) 114282 91068 9 48 0 0% 0 0 0
fannkuchredux (click) 130730 104939 6 202 0 0% 0 0 0
jekyll (click) 1969844 1638788 337 3774 175 4% 0 0 0
lee (click) 233194 180370 85 1062 110 10% 1 0 13
nbody (click) 124010 99014 8 148 0 0% 0 0 0
optcarrot (click) 460074 430820 196 3566 20 0% 0 0 0
rubykon (click) 258026 223308 138 1523 1 0% 0 0 0
30k_ifelse (click) 5562346 4892243 9261 57794 0 0% 0 0 0
30k_methods (click) 2118890 1818060 5780 19351 0 0% 0 0 0
cfunc_itself (click) 113194 89753 6 39 0 0% 0 0 0
fib (click) 111658 89326 6 28 0 0% 0 0 0
getivar (click) 113450 92167 6 55 0 0% 0 0 0
keyword_args (click) 114026 90509 7 41 0 0% 0 0 0
respond_to (click) 115370 91297 6 54 0 0% 0 0 0
setivar (click) 113450 90476 6 28 0 0% 0 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.