YJIT Benchmarks

Details for Benchmarks at 2021-11-01 19:15:06

Overall YJIT is 28.5% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 23.3% 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 10 126 10 118 10 170
hexapdf 10 10 10 10 10 10
liquid-render 10 101 10 111 10 159
mail 10 111 10 119 10 127
psych-load 10 10 10 10 10 10
railsbench 10 10 10 10 10 10
binarytrees 10 46 10 69 10 59
fannkuchredux 10 10 10 10 10 10
jekyll 10 10 10 10 10 10
lee 10 10 10 13 10 15
nbody 10 172 10 331 10 256
optcarrot 10 10 10 10 10 10
rubykon 10 10 10 10 10 10
30k_ifelse 10 10 10 10 10 53
30k_methods 10 10 10 10 10 16
cfunc_itself 10 208 10 339 10 496
fib 10 84 10 307 10 375
getivar 10 223 10 211 10 530
keyword_args 10 76 10 94 10 415
respond_to 10 78 10 89 10 119
setivar 10 257 10 262 10 486

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) 1115610 869709 185 1157 0 0% 0 0 0
hexapdf (click) 1096564 917187 604 7991 629 7% 0 0 320
liquid-render (click) 472001 386595 143 1411 95 6% 0 0 1
mail (click) 861172 667879 339 5258 124 2% 0 0 39
psych-load (click) 187050 150933 56 409 1 0% 0 0 0
railsbench (click) 2599793 2029049 1295 9594 262 2% 0 0 26
binarytrees (click) 114730 91314 9 48 0 0% 0 0 0
fannkuchredux (click) 130794 104939 6 202 0 0% 0 0 0
jekyll (click) 2010228 1671912 336 3835 178 4% 0 0 0
lee (click) 233514 180616 85 1062 110 10% 1 0 13
nbody (click) 123690 98798 8 148 0 0% 0 0 0
optcarrot (click) 460650 431214 196 3566 20 0% 0 0 0
rubykon (click) 258346 223601 139 1526 1 0% 0 0 0
30k_ifelse (click) 5562346 4892243 9261 57794 0 0% 0 0 0
30k_methods (click) 2118890 1818060 5780 19351 0 0% 0 0 0
cfunc_itself (click) 113130 89723 6 39 0 0% 0 0 0
fib (click) 111658 89326 6 28 0 0% 0 0 0
getivar (click) 113450 92167 6 55 0 0% 0 0 0
keyword_args (click) 114026 90509 7 41 0 0% 0 0 0
respond_to (click) 115434 91297 6 54 0 0% 0 0 0
setivar (click) 113450 90476 6 28 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.