YJIT Benchmarks

Details for Benchmarks at 2021-09-24 19:22:55

Overall YJIT is 23.8% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 18.3% 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 10 123 10 119 10 170
liquid-render 10 96 10 108 10 128
mail 10 121 10 123 10 134
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 10 161 10 330 10 265
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 10 213 10 339 10 475
fib 10 90 10 306 10 375
getivar 10 219 10 211 10 529
respond_to 10 72 10 91 10 110
setivar 10 291 10 264 10 470

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) 1091546 835863 185 1164 0 0% 0 0 0
liquid-render (click) 440596 353355 143 1223 92 7% 0 0 1
mail (click) 979482 747948 337 5168 125 2% 0 0 39
psych-load (click) 176362 138869 56 408 1 0% 0 0 0
railsbench (click) 2508337 1917916 1293 9336 256 2% 0 0 26
binarytrees (click) 107901 83079 9 49 0 0% 0 0 0
fannkuchredux (click) 123965 96704 6 203 0 0% 0 0 0
jekyll (click) 1948058 1592573 336 3715 173 4% 0 0 0
lee (click) 225258 170190 85 1045 111 10% 1 0 13
nbody (click) 117309 90809 8 149 0 0% 0 0 0
optcarrot (click) 644093 576262 286 5570 20 0% 0 0 0
30k_ifelse (click) 5555517 4884008 9261 57795 0 0% 0 0 0
30k_methods (click) 2112061 1809825 5780 19352 0 0% 0 0 0
cfunc_itself (click) 106557 81666 6 40 0 0% 0 0 0
fib (click) 105405 81485 6 29 0 0% 0 0 0
getivar (click) 106685 83932 6 56 0 0% 0 0 0
respond_to (click) 108605 83062 6 55 0 0% 0 0 0
setivar (click) 107197 82635 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.