YJIT Benchmarks

Details for Benchmarks at 2021-10-06 09:26:51

Overall YJIT is 25.2% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 20.0% 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 10 126 10 122 10 173
hexapdf 10 10 10 10 10 10
liquid-render 10 104 10 114 10 125
mail 10 123 10 124 10 138
psych-load 10 10 10 10 10 10
railsbench 10 10 10 10 10 10
binarytrees 10 42 10 69 10 57
fannkuchredux 10 10 10 10 10 10
jekyll 10 10 10 10 10 10
lee 10 10 10 13 10 16
nbody 10 170 10 331 10 262
optcarrot 10 10 10 10 10 10
30k_ifelse 10 10 10 10 10 51
30k_methods 10 10 10 10 10 17
cfunc_itself 10 219 10 335 10 492
fib 10 87 10 308 10 375
getivar 10 192 10 211 10 527
keyword_args 10 72 10 97 10 73
respond_to 10 79 10 90 10 110
setivar 10 279 10 265 10 459

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) 1111258 864365 185 1151 0 0% 0 0 0
hexapdf (click) 974081 812821 603 7853 677 8% 0 0 320
liquid-render (click) 454996 370677 143 1246 94 7% 0 0 1
mail (click) 971418 750044 337 5015 129 2% 0 0 39
psych-load (click) 184874 148953 56 408 1 0% 0 0 0
railsbench (click) 2555697 1989597 1293 9499 262 2% 0 0 26
binarytrees (click) 113469 89713 9 49 0 0% 0 0 0
fannkuchredux (click) 128957 102944 6 203 0 0% 0 0 0
jekyll (click) 1956954 1626489 336 3742 173 4% 0 0 0
lee (click) 234026 180087 85 1086 114 10% 1 0 13
nbody (click) 122877 97443 8 149 0 0% 0 0 0
optcarrot (click) 649661 584204 286 5575 20 0% 0 0 0
30k_ifelse (click) 5561085 4890642 9261 57795 0 0% 0 0 0
30k_methods (click) 2117629 1816459 5780 19352 0 0% 0 0 0
cfunc_itself (click) 111933 88152 6 40 0 0% 0 0 0
fib (click) 109821 87331 6 29 0 0% 0 0 0
getivar (click) 111613 90172 6 56 0 0% 0 0 0
keyword_args (click) 109693 86905 7 22 0 0% 0 0 0
respond_to (click) 114173 89696 6 55 0 0% 0 0 0
setivar (click) 111805 88629 6 29 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.