YJIT Benchmarks

Details for Benchmarks at 2021-11-07 07:10:15

Overall YJIT is 26.8% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 20.3% 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 10 111 10 172
hexapdf 10 10 10 10 10 10
liquid-render 10 105 10 111 10 163
mail 10 118 10 122 10 125
psych-load 10 10 10 10 10 10
railsbench 10 10 10 10 10 10
binarytrees 10 46 10 69 10 61
fannkuchredux 10 10 10 10 10 10
jekyll 10 10 10 10 10 10
lee 10 10 10 14 10 15
nbody 10 174 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 10 210 10 338 10 465
fib 10 94 10 306 10 375
getivar 10 209 10 211 10 540
keyword_args 10 75 10 97 10 431
respond_to 10 79 10 90 10 113
setivar 10 293 10 256 10 462

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) 967530 677565 184 1164 0 0% 0 0 0
hexapdf (click) 1087338 812743 604 8072 646 8% 0 0 320
liquid-render (click) 466103 340246 143 1411 95 6% 0 0 1
mail (click) 873322 601134 339 5425 124 2% 0 0 39
psych-load (click) 296161 211042 57 423 1 0% 0 0 0
railsbench (click) 2579362 1793072 1295 9604 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) 1886378 1392119 336 3895 179 4% 0 0 0
lee (click) 345130 239770 44 566 70 12% 0 0 12
nbody (click) 122149 87094 8 148 0 0% 0 0 0
optcarrot (click) 451109 380794 196 3566 20 0% 0 0 0
rubykon (click) 254757 196893 138 1525 2 0% 0 0 0
30k_ifelse (click) 5501925 4300583 9261 57794 0 0% 0 0 0
30k_methods (click) 2117221 1609178 5780 19351 0 0% 0 0 0
cfunc_itself (click) 111333 78888 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) 112165 79529 7 41 0 0% 0 0 0
respond_to (click) 113445 80222 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.