YJIT Benchmarks

Details for Benchmarks at 2021-10-01 20:37:34

Overall YJIT is 25.0% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 19.1% 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 10 118 10 116 10 161
liquid-render 10 97 10 106 10 118
mail 10 116 10 117 10 127
psych-load 10 10 10 10 10 10
railsbench 10 10 10 10 10 10
binarytrees 10 41 10 68 10 56
fannkuchredux 10 10 10 10 10 10
jekyll 10 10 10 10 10 10
lee 10 10 10 13 10 15
nbody 10 168 10 331 10 267
optcarrot 10 10 10 10 10 10
30k_ifelse 10 10 10 10 10 52
30k_methods 10 10 10 10 10 17
cfunc_itself 10 220 10 335 10 489
fib 10 86 10 289 10 375
getivar 10 198 10 209 10 527
keyword_args 10 71 10 98 10 73
respond_to 10 76 10 88 10 100
setivar 10 290 10 265 10 490

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) 1083802 837849 185 1151 0 0% 0 0 0
liquid-render (click) 438292 355794 143 1241 92 7% 0 0 1
mail (click) 954906 734678 337 4997 129 2% 0 0 39
psych-load (click) 175146 139378 56 408 1 0% 0 0 0
railsbench (click) 2494641 1929837 1293 9346 255 2% 0 0 26
binarytrees (click) 106493 83028 9 49 0 0% 0 0 0
fannkuchredux (click) 122557 96653 6 203 0 0% 0 0 0
jekyll (click) 1939290 1609817 336 3774 174 4% 0 0 0
lee (click) 223594 170062 85 1043 111 10% 1 0 13
nbody (click) 115901 90758 8 149 0 0% 0 0 0
optcarrot (click) 642685 577519 286 5575 20 0% 0 0 0
30k_ifelse (click) 5554685 4884351 9261 57795 0 0% 0 0 0
30k_methods (click) 2110845 1809922 5780 19352 0 0% 0 0 0
cfunc_itself (click) 105533 81861 6 40 0 0% 0 0 0
fib (click) 103421 81040 6 29 0 0% 0 0 0
getivar (click) 105213 83881 6 56 0 0% 0 0 0
keyword_args (click) 103293 80614 7 22 0 0% 0 0 0
respond_to (click) 107581 83204 6 55 0 0% 0 0 0
setivar (click) 105213 82190 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.