YJIT Benchmarks

Details for Benchmarks at 2021-11-17 14:05:02

Overall YJIT is 28.6% 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 MJIT warmups MJIT iters YJIT warmups YJIT iters
activerecord 10 125 10 113 10 110 10 174
hexapdf 10 10 10 10 10 10
liquid-render 10 106 10 113 10 110 10 164
mail 10 118 10 124 10 116 10 130
psych-load 10 10 10 10 10 10 10 10
railsbench 10 10 10 10 10 10 10 10
binarytrees 10 47 10 76 10 70 10 62
fannkuchredux 10 10 10 10 10 10 10 10
jekyll 10 10 10 10 10 10 10 10
lee 10 10 10 12 10 13 10 15
nbody 10 174 10 316 10 326 10 255
optcarrot 10 10 10 10 10 10 10 10
rubykon 10 10 10 10 10 10 10 10
30k_ifelse 10 10 10 10 10 10 10 51
30k_methods 10 10 10 10 10 10 10 17
cfunc_itself 10 214 10 319 10 302 10 507
fib 10 95 10 309 10 308 10 374
getivar 10 220 10 212 10 220 10 541
keyword_args 10 77 10 96 10 96 10 429
respond_to 10 76 10 95 10 92 10 119
setivar 10 282 10 284 10 282 10 531

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) 969130 678705 184 1169 0 0% 0 0 0
hexapdf (click) 1083946 810535 595 8036 613 7% 0 0 320
liquid-render (click) 463159 338577 143 1389 95 6% 0 0 1
mail (click) 853546 587121 339 5221 124 2% 0 0 39
psych-load (click) 297825 211978 57 435 1 0% 0 0 0
railsbench (click) 2575586 1790031 1295 9579 263 2% 0 0 26
binarytrees (click) 112741 80259 9 48 0 0% 0 0 0
fannkuchredux (click) 128741 92269 6 202 0 0% 0 0 0
jekyll (click) 1879722 1387231 336 3884 179 4% 0 0 0
lee (click) 344618 239471 44 566 70 12% 0 0 12
nbody (click) 122597 87555 8 148 0 0% 0 0 0
optcarrot (click) 451109 380794 196 3566 20 0% 0 0 0
rubykon (click) 257381 198988 138 1545 2 0% 0 0 0
30k_ifelse (click) 5501925 4300583 9261 57794 0 0% 0 0 0
30k_methods (click) 2117925 1609722 5780 19351 0 0% 0 0 0
cfunc_itself (click) 112229 79565 6 39 0 0% 0 0 0
fib (click) 109797 78496 6 28 0 0% 0 0 0
getivar (click) 111525 81007 6 55 0 0% 0 0 0
keyword_args (click) 112165 79529 7 41 0 0% 0 0 0
respond_to (click) 113893 80683 6 54 0 0% 0 0 0
setivar (click) 111461 79531 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.