YJIT Benchmarks

Details for Benchmarks at 2021-11-24 19:10:51

Overall YJIT is 27.2% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 17.4% 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 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 54 15 20 15
jekyll 5 15 20 15 36 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 43 15 20 15
30k_ifelse 5 15 20 15 75 15 20 15
30k_methods 5 15 20 15 41 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) 952682 715620 185 1149 0 0% 0 0 0
hexapdf (click) 1072746 854212 595 7962 617 7% 0 0 321
liquid-render (click) 466423 362485 143 1408 96 6% 0 0 1
mail (click) 790250 583496 324 4672 124 2% 0 0 39
psych-load (click) 290721 225464 57 423 1 0% 0 0 0
railsbench (click) 2551074 1901482 1293 9576 263 2% 0 0 26
binarytrees (click) 112293 85392 9 48 0 0% 0 0 0
erubi (click) 269409 208892 8 35 0 0% 0 0 0
erubi_rails (click) 2376290 1705225 260 1797 16 0% 0 0 3
fannkuchredux (click) 128293 97402 6 202 0 0% 0 0 0
jekyll (click) 1889130 1501269 336 4041 179 4% 0 0 0
lee (click) 297834 230527 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) 256293 206110 138 1555 1 0% 0 0 0
30k_ifelse (click) 5501477 4305716 9261 57794 0 0% 0 0 0
30k_methods (click) 2116581 1614178 5780 19351 0 0% 0 0 0
cfunc_itself (click) 111397 84370 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) 112229 85011 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.