YJIT Benchmarks

Details for Benchmarks at 2021-10-11 07:09:50

Overall YJIT is 28.1% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 22.9% 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 10 125 10 119 10 174
hexapdf 10 10 10 10 10 10
liquid-render 10 105 10 113 10 148
mail 10 119 10 121 10 133
psych-load 10 10 10 10 10 10
railsbench 10 10 10 10 10 10
binarytrees 10 45 10 68 10 58
fannkuchredux 10 10 10 10 10 10
jekyll 10 10 10 10 10 10
lee 10 10 10 13 10 16
nbody 10 171 10 324 10 257
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 10 207 10 337 10 498
fib 10 94 10 307 10 375
getivar 10 212 10 211 10 529
keyword_args 10 74 10 93 10 422
respond_to 10 74 10 90 10 105
setivar 10 284 10 263 10 514

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) 1111642 865986 185 1153 0 0% 0 0 0
hexapdf (click) 975617 816506 602 7876 675 8% 0 0 320
liquid-render (click) 458644 374867 143 1287 94 7% 0 0 1
mail (click) 1010010 780814 337 5393 131 2% 0 0 39
psych-load (click) 185066 149179 56 409 1 0% 0 0 0
railsbench (click) 2567921 2000995 1293 9611 262 2% 0 0 26
binarytrees (click) 113533 89826 9 49 0 0% 0 0 0
fannkuchredux (click) 129917 103829 6 203 0 0% 0 0 0
jekyll (click) 1961114 1631082 336 3730 173 4% 0 0 0
lee (click) 234858 181419 85 1091 114 10% 1 0 13
nbody (click) 122941 97556 8 149 0 0% 0 0 0
optcarrot (click) 650045 584808 286 5576 20 0% 0 0 0
30k_ifelse (click) 5561469 4891133 9261 57795 0 0% 0 0 0
30k_methods (click) 2118013 1816950 5780 19352 0 0% 0 0 0
cfunc_itself (click) 111421 87871 6 40 0 0% 0 0 0
fib (click) 110333 87970 6 29 0 0% 0 0 0
getivar (click) 112253 90679 6 56 0 0% 0 0 0
keyword_args (click) 112829 89021 7 42 0 0% 0 0 0
respond_to (click) 114173 89809 6 55 0 0% 0 0 0
setivar (click) 112253 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.