YJIT Benchmarks

Details for Benchmarks at 2022-03-15 07:13:00

Overall YJIT is 33.4% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 30.3% 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 MJIT warmups MJIT iters YJIT warmups YJIT iters
activerecord 5 182 75 182 20 182
hexapdf 5 15 20 15
liquid-render 5 157 75 157 20 157
mail 5 123 75 123 20 123
psych-load 5 15 75 15 20 15
railsbench 5 15 75 15 20 15
binarytrees 5 67 75 67 20 67
chunky_png 5 30 75 30 20 30
discourse 5 34 75 34 20 34
erubi 5 47 75 47 20 47
erubi_rails 5 985 75 985 20 985
fannkuchredux 5 15 75 15 20 15
lee 5 21 75 21 20 21
nbody 5 283 75 283 20 283
optcarrot 5 15 75 15 20 15
rubykon 5 15 39 15 20 15
30k_ifelse 5 56 75 56 20 56
30k_methods 5 22 29 22 20 22
cfunc_itself 5 438 75 438 20 438
fib 5 320 75 320 20 320
getivar 5 765 75 765 20 765
keyword_args 5 377 75 377 20 377
respond_to 5 105 75 105 20 105
setivar 5 1909 75 1909 20 1909

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) 991633 760778 185 1199 0 0% 0 0 0
hexapdf (click) 1114577 913290 599 8169 613 7% 0 0 320
liquid-render (click) 484561 383685 143 1501 95 6% 0 0 1
mail (click) 856017 641705 324 5111 125 2% 0 0 39
psych-load (click) 331345 261985 59 439 1 0% 0 0 0
railsbench (click) 2536273 1932817 1297 9371 268 2% 0 0 26
binarytrees (click) 144465 109597 11 59 0 0% 0 0 0
chunky_png (click) 354513 275040 85 867 0 0% 0 0 0
discourse (click) 22699409 11400736 3133 285451 261939 91% 2 0 133
erubi (click) 322129 255167 10 79 0 0% 0 0 0
erubi_rails (click) 1907473 1436937 262 1893 18 0% 0 0 3
fannkuchredux (click) 166033 127681 8 189 0 0% 0 0 0
lee (click) 372049 293168 45 587 69 11% 0 0 12
nbody (click) 161553 124184 10 159 0 0% 0 0 0
optcarrot (click) 488785 429814 198 3576 20 0% 0 0 0
rubykon (click) 293521 237170 141 1527 1 0% 0 0 0
30k_ifelse (click) 5541329 4337307 9263 57805 0 0% 0 0 0
30k_methods (click) 2156497 1645769 5782 19362 0 0% 0 0 0
cfunc_itself (click) 150673 115587 8 50 0 0% 0 0 0
fib (click) 141009 107505 8 39 0 0% 0 0 0
getivar (click) 151441 117899 8 66 0 0% 0 0 0
keyword_args (click) 151569 116228 9 52 0 0% 0 0 0
respond_to (click) 152913 117066 8 65 0 0% 0 0 0
setivar (click) 151057 116255 8 39 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.