YJIT Benchmarks

Details for Benchmarks at 2021-09-26 07:09:32

Overall YJIT is 22.9% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 15.5% 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 10 121 10 118 10 164
liquid-render 10 96 10 104 10 121
mail 10 114 10 119 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 10 168 10 331 10 264
optcarrot 10 10 10 10 10 10
30k_ifelse 10 10 10 10 10 50
30k_methods 10 10 10 10 10 17
cfunc_itself 10 215 10 337 10 474
fib 10 92 10 307 10 375
getivar 10 218 10 211 10 529
respond_to 10 73 10 90 10 110
setivar 10 290 10 265 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) 1091162 835306 185 1160 0 0% 0 0 0
liquid-render (click) 442964 354643 143 1247 92 7% 0 0 1
mail (click) 973402 744124 337 5126 125 2% 0 0 39
psych-load (click) 176938 139263 56 408 1 0% 0 0 0
railsbench (click) 2497905 1911198 1293 9252 255 2% 0 0 26
binarytrees (click) 107901 83079 9 49 0 0% 0 0 0
fannkuchredux (click) 124029 96704 6 203 0 0% 0 0 0
jekyll (click) 1951194 1595046 336 3773 173 4% 0 0 0
lee (click) 225258 170190 85 1045 111 10% 1 0 13
nbody (click) 117373 90809 8 149 0 0% 0 0 0
optcarrot (click) 644669 576656 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) 106941 81912 6 40 0 0% 0 0 0
fib (click) 104829 81091 6 29 0 0% 0 0 0
getivar (click) 106621 83932 6 56 0 0% 0 0 0
respond_to (click) 108605 83062 6 55 0 0% 0 0 0
setivar (click) 106685 82241 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.