YJIT Benchmarks

Details for Benchmarks at 2021-10-12 07:09:48

Overall YJIT is 28.2% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 22.1% 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 10 178
hexapdf 10 10 10 10 10 10
liquid-render 10 105 10 114 10 144
mail 10 119 10 125 10 133
psych-load 10 10 10 10 10 10
railsbench 10 10 10 10 10 10
binarytrees 10 44 10 66 10 59
fannkuchredux 10 10 10 10 10 10
jekyll 10 10 10 10 10 10
lee 10 10 10 13 10 15
nbody 10 171 10 331 10 255
optcarrot 10 10 10 10 10 10
30k_ifelse 10 10 10 10 10 53
30k_methods 10 10 10 10 10 17
cfunc_itself 10 210 10 333 10 506
fib 10 94 10 307 10 375
getivar 10 212 10 211 10 529
keyword_args 10 77 10 95 10 430
respond_to 10 75 10 88 10 106
setivar 10 285 10 264 10 518

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) 1112474 866688 185 1154 0 0% 0 0 0
hexapdf (click) 976321 817157 603 7883 675 8% 0 0 320
liquid-render (click) 458580 374897 143 1287 94 7% 0 0 1
mail (click) 971098 750315 337 5008 129 2% 0 0 39
psych-load (click) 185386 149557 56 409 1 0% 0 0 0
railsbench (click) 2568817 2001546 1293 9586 262 2% 0 0 26
binarytrees (click) 113853 90204 9 49 0 0% 0 0 0
fannkuchredux (click) 129597 103451 6 203 0 0% 0 0 0
jekyll (click) 1961690 1631684 336 3717 172 4% 0 0 0
lee (click) 234858 181419 85 1091 114 10% 1 0 13
nbody (click) 122813 97688 8 149 0 0% 0 0 0
optcarrot (click) 649661 584430 286 5576 20 0% 0 0 0
30k_ifelse (click) 5561469 4891133 9261 57795 0 0% 0 0 0
30k_methods (click) 2118077 1816950 5780 19352 0 0% 0 0 0
cfunc_itself (click) 111997 88265 6 40 0 0% 0 0 0
fib (click) 110781 88216 6 29 0 0% 0 0 0
getivar (click) 111677 90285 6 56 0 0% 0 0 0
keyword_args (click) 113213 89399 7 42 0 0% 0 0 0
respond_to (click) 114557 90187 6 55 0 0% 0 0 0
setivar (click) 112189 88988 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.