YJIT Benchmarks

Details for Benchmarks at 2021-11-07 19:09:35

Overall YJIT is 26.7% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 19.4% 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 10 130 10 114 10 173
hexapdf 10 10 10 10 10 10
liquid-render 10 106 10 111 10 162
mail 10 115 10 119 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 10 175 10 331 10 268
optcarrot 10 10 10 10 10 10
rubykon 10 10 10 10 10 10
30k_ifelse 10 10 10 10 10 54
30k_methods 10 10 10 10 10 17
cfunc_itself 10 211 10 338 10 503
fib 10 94 10 308 10 374
getivar 10 209 10 211 10 540
keyword_args 10 75 10 98 10 429
respond_to 10 79 10 90 10 118
setivar 10 293 10 265 10 461

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) 967978 677714 184 1159 0 0% 0 0 0
hexapdf (click) 1087274 812652 605 8068 647 8% 0 0 320
liquid-render (click) 467575 341174 143 1421 96 6% 0 0 1
mail (click) 855402 588331 339 5231 124 2% 0 0 39
psych-load (click) 295969 210909 57 423 1 0% 0 0 0
railsbench (click) 2584482 1796471 1295 9652 263 2% 0 0 26
binarytrees (click) 112741 80259 9 48 0 0% 0 0 0
fannkuchredux (click) 129317 92618 6 202 0 0% 0 0 0
jekyll (click) 1891114 1394687 336 3947 179 4% 0 0 0
lee (click) 345194 239795 44 566 70 12% 0 0 12
nbody (click) 122725 87443 8 148 0 0% 0 0 0
optcarrot (click) 451109 380794 196 3566 20 0% 0 0 0
rubykon (click) 254373 196476 138 1520 1 0% 0 0 0
30k_ifelse (click) 5501925 4300583 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) 110373 78845 6 28 0 0% 0 0 0
getivar (click) 111717 81140 6 55 0 0% 0 0 0
keyword_args (click) 112165 79529 7 41 0 0% 0 0 0
respond_to (click) 113445 80222 6 54 0 0% 0 0 0
setivar (click) 112037 79880 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.