YJIT Benchmarks

Details for Benchmarks at 2021-11-15 19:10:01

Overall YJIT is 28.8% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 21.2% 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 10 127 10 114 10 181
hexapdf 10 10 10 10 10 10
liquid-render 10 106 10 114 10 162
mail 10 117 10 125 10 131
psych-load 10 10 10 10 10 10
railsbench 10 10 10 10 10 10
binarytrees 10 45 10 77 10 59
fannkuchredux 10 10 10 10 10 10
jekyll 10 10 10 10 10 10
lee 10 10 10 12 10 15
nbody 10 170 10 316 10 266
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 10 211 10 310 10 508
fib 10 91 10 317 10 375
getivar 10 198 10 212 10 539
keyword_args 10 75 10 98 10 432
respond_to 10 78 10 81 10 119
setivar 10 289 10 284 10 437

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) 966378 676659 184 1158 0 0% 0 0 0
hexapdf (click) 1082346 809333 596 8014 614 7% 0 0 320
liquid-render (click) 469239 342433 143 1451 95 6% 0 0 1
mail (click) 870506 599548 339 5396 124 2% 0 0 39
psych-load (click) 296737 211366 57 429 1 0% 0 0 0
railsbench (click) 2576482 1791062 1295 9580 263 2% 0 0 26
binarytrees (click) 113317 80608 9 48 0 0% 0 0 0
fannkuchredux (click) 128741 92269 6 202 0 0% 0 0 0
jekyll (click) 1884202 1390147 336 3881 179 4% 0 0 0
lee (click) 345194 239795 44 566 70 12% 0 0 12
nbody (click) 122277 87227 8 148 0 0% 0 0 0
optcarrot (click) 451109 380794 196 3566 20 0% 0 0 0
rubykon (click) 257637 199353 138 1560 1 0% 0 0 0
30k_ifelse (click) 5502501 4300932 9261 57794 0 0% 0 0 0
30k_methods (click) 2117029 1609045 5780 19351 0 0% 0 0 0
cfunc_itself (click) 111909 79237 6 39 0 0% 0 0 0
fib (click) 110373 78845 6 28 0 0% 0 0 0
getivar (click) 111525 81007 6 55 0 0% 0 0 0
keyword_args (click) 112741 79878 7 41 0 0% 0 0 0
respond_to (click) 114021 80571 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.