YJIT Benchmarks

Details for Benchmarks at 2022-04-24 19:12:26

Overall YJIT is 32.4% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 28.2% 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 MJIT warmups MJIT iters YJIT warmups YJIT iters
activerecord 5 182 75 182 20 182
hexapdf 5 15 20 15
liquid-render 5 154 75 154 20 154
mail 5 123 75 123 20 123
psych-load 5 15 75 15 20 15
railsbench 5 15 75 15 20 15
binarytrees 5 61 75 61 20 61
chunky_png 5 29 75 29 20 29
discourse 5 40 75 40 20 40
erubi 5 47 75 47 20 47
erubi_rails 5 975 75 975 20 975
fannkuchredux 5 15 74 15 20 15
lee 5 22 75 22 20 22
nbody 5 268 75 268 20 268
optcarrot 5 15 75 15 20 15
rubykon 5 15 27 15 20 15
30k_ifelse 5 55 75 55 20 55
30k_methods 5 22 28 22 20 22
cfunc_itself 5 453 75 453 20 453
fib 5 320 75 320 20 320
getivar 5 782 75 782 20 782
keyword_args 5 378 75 378 20 378
respond_to 5 106 75 106 20 106
setivar 5 1776 75 1776 20 1776

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) 992849 813511 185 1185 0 0% 0 0 0
hexapdf (click) 1099089 922725 599 7887 427 5% 0 0 321
liquid-render (click) 505681 425863 143 1527 93 6% 0 0 5
mail (click) 843409 655063 324 4955 96 1% 0 0 111
psych-load (click) 341841 286772 59 434 1 0% 0 0 0
railsbench (click) 2595665 2101071 1297 9368 224 2% 0 0 26
binarytrees (click) 169681 138826 11 58 0 0% 0 0 0
chunky_png (click) 372817 305602 85 867 0 0% 0 0 0
discourse (click) 6189713 5562138 3089 26404 3121 11% 2 0 140
erubi (click) 327953 275863 10 79 0 0% 0 0 0
erubi_rails (click) 1956817 1595778 262 1888 12 0% 0 0 3
fannkuchredux (click) 183441 149524 8 188 0 0% 0 0 0
lee (click) 378513 315736 45 582 68 11% 0 0 13
nbody (click) 178961 146027 10 158 0 0% 0 0 0
optcarrot (click) 505425 451283 198 3575 20 0% 0 0 0
rubykon (click) 309649 258217 140 1530 1 0% 0 0 0
30k_ifelse (click) 5558545 4359020 9263 57810 0 0% 0 0 0
30k_methods (click) 2171601 1665021 5782 19362 0 0% 0 0 0
cfunc_itself (click) 165841 134864 8 50 0 0% 0 0 0
fib (click) 165713 135175 8 39 0 0% 0 0 0
getivar (click) 167441 137686 8 66 0 0% 0 0 0
keyword_args (click) 169041 138096 9 51 0 0% 0 0 0
respond_to (click) 168017 136318 8 65 0 0% 0 0 0
setivar (click) 167697 137724 8 38 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.