YJIT Benchmarks

Details for Benchmarks at 2021-11-08 07:10:30

Overall YJIT is 27.1% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 24.2% 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 10 125 10 117 10 172
hexapdf 10 10 10 10 10 10
liquid-render 10 103 10 110 10 157
mail 10 116 10 120 10 126
psych-load 10 10 10 10 10 10
railsbench 10 10 10 10 10 10
binarytrees 10 47 10 69 10 60
fannkuchredux 10 10 10 10 10 10
jekyll 10 10 10 10 10 10
lee 10 10 10 14 10 16
nbody 10 171 10 324 10 255
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 10 210 10 339 10 508
fib 10 93 10 305 10 375
getivar 10 209 10 211 10 540
keyword_args 10 76 10 96 10 424
respond_to 10 78 10 90 10 122
setivar 10 293 10 264 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) 970666 679177 184 1173 0 0% 0 0 0
hexapdf (click) 1087338 812718 604 8072 647 8% 0 0 320
liquid-render (click) 466999 340740 143 1428 95 6% 0 0 1
mail (click) 875690 602325 339 5435 124 2% 0 0 39
psych-load (click) 296545 211258 57 423 1 0% 0 0 0
railsbench (click) 2586850 1797937 1295 9681 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) 1886954 1392423 336 3910 180 4% 0 0 0
lee (click) 344554 239421 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) 254245 196376 138 1523 1 0% 0 0 0
30k_ifelse (click) 5502501 4300932 9261 57794 0 0% 0 0 0
30k_methods (click) 2117605 1609394 5780 19351 0 0% 0 0 0
cfunc_itself (click) 111525 79021 6 39 0 0% 0 0 0
fib (click) 109797 78496 6 28 0 0% 0 0 0
getivar (click) 112101 81356 6 55 0 0% 0 0 0
keyword_args (click) 112741 79878 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.