YJIT Benchmarks

Details for Benchmarks at 2021-11-03 13:03:42

Overall YJIT is 28.5% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 20.7% 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 10 129 10 122 10 172
hexapdf 10 10 10 10 10 10
liquid-render 10 104 10 113 10 166
mail 10 115 10 124 10 129
psych-load 10 10 10 10 10 10
railsbench 10 10 10 10 10 10
binarytrees 10 46 10 66 10 58
fannkuchredux 10 10 10 10 10 10
jekyll 10 10 10 10 10 10
lee 10 10 10 13 10 15
nbody 10 173 10 331 10 257
optcarrot 10 10 10 10 10 10
rubykon 10 10 10 10 10 10
30k_ifelse 10 10 10 10 10 53
30k_methods 10 10 10 10 10 17
cfunc_itself 10 208 10 338 10 470
fib 10 87 10 305 10 375
getivar 10 223 10 211 10 530
keyword_args 10 76 10 97 10 426
respond_to 10 76 10 89 10 119
setivar 10 256 10 264 10 492

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) 1125146 877616 185 1176 0 0% 0 0 0
hexapdf (click) 1095284 916623 603 7968 624 7% 0 0 320
liquid-render (click) 473409 387910 143 1418 95 6% 0 0 1
mail (click) 843508 654195 339 5028 124 2% 0 0 39
psych-load (click) 187050 150933 56 409 1 0% 0 0 0
railsbench (click) 2596337 2027588 1295 9510 262 2% 0 0 26
binarytrees (click) 114154 90920 9 48 0 0% 0 0 0
fannkuchredux (click) 130858 104939 6 202 0 0% 0 0 0
jekyll (click) 2022452 1681337 336 3847 180 4% 0 0 0
lee (click) 237866 183640 85 1098 111 10% 1 0 13
nbody (click) 123882 99028 8 148 0 0% 0 0 0
optcarrot (click) 460586 431214 196 3566 20 0% 0 0 0
rubykon (click) 260458 225654 138 1554 2 0% 0 0 0
30k_ifelse (click) 5562666 4892621 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) 111082 88932 6 28 0 0% 0 0 0
getivar (click) 112874 91773 6 55 0 0% 0 0 0
keyword_args (click) 113450 90115 7 41 0 0% 0 0 0
respond_to (click) 114858 90903 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.