YJIT Benchmarks

Details for Benchmarks at 2021-11-09 07:10:21

Overall YJIT is 31.5% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 25.1% 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 10 128 10 118 10 183
hexapdf 10 10 10 10 10 10
liquid-render 10 107 10 113 10 164
mail 10 117 10 123 10 130
psych-load 10 10 10 10 10 10
railsbench 10 10 10 10 10 10
binarytrees 10 46 10 70 10 61
fannkuchredux 10 10 10 10 10 10
jekyll 10 10 10 10 10 10
lee 10 10 10 14 10 15
nbody 10 163 10 330 10 265
optcarrot 10 10 10 10 10 10
rubykon 10 10 10 10 10 10
30k_ifelse 10 10 10 10 10 52
30k_methods 10 10 10 10 10 17
cfunc_itself 10 216 10 338 10 497
fib 10 95 10 305 10 374
getivar 10 221 10 209 10 541
keyword_args 10 75 10 98 10 428
respond_to 10 77 10 90 10 118
setivar 10 282 10 265 10 498

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) 967466 677400 184 1159 0 0% 0 0 0
hexapdf (click) 1093354 816725 604 8071 654 8% 0 0 320
liquid-render (click) 465015 339606 143 1395 95 6% 0 0 1
mail (click) 878378 604130 339 5460 124 2% 0 0 39
psych-load (click) 296161 211042 57 423 1 0% 0 0 0
railsbench (click) 2583010 1795124 1295 9641 263 2% 0 0 26
binarytrees (click) 113253 80720 9 48 0 0% 0 0 0
fannkuchredux (click) 129317 92618 6 202 0 0% 0 0 0
jekyll (click) 1885930 1391137 336 3908 179 4% 0 0 0
lee (click) 345066 239882 44 566 70 12% 0 0 12
nbody (click) 122725 87443 8 148 0 0% 0 0 0
optcarrot (click) 451685 381143 196 3566 20 0% 0 0 0
rubykon (click) 254053 196305 138 1518 2 0% 0 0 0
30k_ifelse (click) 5502437 4300932 9261 57794 0 0% 0 0 0
30k_methods (click) 2117605 1609394 5780 19351 0 0% 0 0 0
cfunc_itself (click) 111909 79237 6 39 0 0% 0 0 0
fib (click) 110309 78845 6 28 0 0% 0 0 0
getivar (click) 112037 81356 6 55 0 0% 0 0 0
keyword_args (click) 112677 79990 7 41 0 0% 0 0 0
respond_to (click) 114021 80571 6 54 0 0% 0 0 0
setivar (click) 111909 79855 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.