YJIT Benchmarks

Details for Benchmarks at 2021-10-27 19:09:25

Overall YJIT is 26.7% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 16.9% 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 YJIT warmups YJIT iters
activerecord 10 131 10 123 10 179
hexapdf 10 10 10 10 10 10
liquid-render 10 106 10 112 10 151
mail 10 119 10 125 10 132
psych-load 10 10 10 10 10 10
railsbench 10 10 10 10 10 10
binarytrees 10 44 10 69 10 57
fannkuchredux 10 10 10 10 10 10
jekyll 10 10 10 10 10 10
lee 10 10 10 13 10 15
nbody 10 174 10 331 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 10 205 10 339 10 500
fib 10 93 10 307 10 375
getivar 10 207 10 211 10 529
keyword_args 10 73 10 98 10 431
respond_to 10 78 10 89 10 111
setivar 10 277 10 264 10 459

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) 1117594 871348 185 1160 0 0% 0 0 0
hexapdf (click) 1078516 903219 603 7830 619 7% 0 0 320
liquid-render (click) 460609 376677 143 1273 94 7% 0 0 1
mail (click) 853236 661152 339 5211 124 2% 0 0 39
psych-load (click) 192810 156264 56 409 1 0% 0 0 0
railsbench (click) 2576177 2012279 1293 9495 262 2% 0 0 26
binarytrees (click) 114922 91011 9 48 0 0% 0 0 0
fannkuchredux (click) 130474 104390 6 202 0 0% 0 0 0
jekyll (click) 1964634 1633814 336 3761 173 4% 0 0 0
lee (click) 235498 181947 85 1082 114 10% 1 0 13
nbody (click) 123626 98347 8 148 0 0% 0 0 0
optcarrot (click) 460394 430533 196 3566 20 0% 0 0 0
rubykon (click) 255530 220777 138 1500 2 0% 0 0 0
30k_ifelse (click) 5562474 4891940 9261 57794 0 0% 0 0 0
30k_methods (click) 2118058 1816985 5780 19351 0 0% 0 0 0
cfunc_itself (click) 113258 89450 6 39 0 0% 0 0 0
fib (click) 111338 88777 6 28 0 0% 0 0 0
getivar (click) 113578 91864 6 55 0 0% 0 0 0
keyword_args (click) 113194 89434 7 41 0 0% 0 0 0
respond_to (click) 115050 90748 6 54 0 0% 0 0 0
setivar (click) 113514 90173 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.