YJIT Benchmarks

Details for Benchmarks at 2021-11-23 19:10:53

Overall YJIT is 27.2% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 16.5% 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 MJIT warmups MJIT iters YJIT warmups YJIT iters
activerecord 5 15 20 15 75 15 20 15
hexapdf 5 15 20 15 20 15
liquid-render 5 15 20 15 75 15 20 15
mail 5 15 20 15 75 15 20 15
psych-load 5 15 20 15 75 15 20 15
railsbench 5 15 20 15 75 15 20 15
binarytrees 5 15 20 15 75 15 20 15
erubi 5 15 20 15 75 15 20 15
erubi_rails 5 15 20 15 75 15 20 15
fannkuchredux 5 15 20 15 55 15 20 15
jekyll 5 15 20 15 35 15 20 15
lee 5 15 20 15 75 15 20 15
nbody 5 15 20 15 75 15 20 15
optcarrot 5 15 20 15 75 15 20 15
rubykon 5 15 20 15 44 15 20 15
30k_ifelse 5 15 20 15 70 15 20 15
30k_methods 5 15 20 15 43 15 20 15
cfunc_itself 5 15 20 15 75 15 20 15
fib 5 15 20 15 75 15 20 15
getivar 5 15 20 15 75 15 20 15
keyword_args 5 15 20 15 75 15 20 15
respond_to 5 15 20 15 75 15 20 15
setivar 5 15 20 15 75 15 20 15

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) 958250 720038 184 1162 0 0% 0 0 0
hexapdf (click) 1075114 856620 596 7958 616 7% 0 0 320
liquid-render (click) 469239 364672 143 1455 95 6% 0 0 1
mail (click) 780778 576585 324 4551 124 2% 0 0 39
psych-load (click) 293217 227839 57 423 1 0% 0 0 0
railsbench (click) 2560866 1909425 1293 9650 264 2% 0 0 26
binarytrees (click) 112293 85392 9 48 0 0% 0 0 0
erubi (click) 271905 211267 8 35 0 0% 0 0 0
erubi_rails (click) 2419362 1727850 260 1797 17 0% 0 0 3
fannkuchredux (click) 128293 97402 6 202 0 0% 0 0 0
jekyll (click) 1885994 1499230 336 3979 179 4% 0 0 0
lee (click) 297898 230552 44 226 54 23% 0 0 12
nbody (click) 121701 92363 8 148 0 0% 0 0 0
optcarrot (click) 450661 391769 196 3566 20 0% 0 0 0
rubykon (click) 253733 203827 138 1525 1 0% 0 0 0
30k_ifelse (click) 5501989 4306065 9261 57794 0 0% 0 0 0
30k_methods (click) 2116581 1614178 5780 19351 0 0% 0 0 0
cfunc_itself (click) 110885 84021 6 39 0 0% 0 0 0
fib (click) 109349 83629 6 28 0 0% 0 0 0
getivar (click) 111077 86140 6 55 0 0% 0 0 0
keyword_args (click) 111717 84662 7 41 0 0% 0 0 0
respond_to (click) 112997 85475 6 54 0 0% 0 0 0
setivar (click) 111013 84664 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.