YJIT Benchmarks

Details for Benchmarks at 2022-08-20 20:13:57

Overall YJIT is 35.2% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 33.7% 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 5 192 75 192 20 192
hexapdf 5 15 20 15
liquid-render 5 155 75 155 20 155
mail 5 128 75 128 20 128
psych-load 5 15 75 15 20 15
railsbench 5 15 75 15 20 15
binarytrees 5 62 75 62 20 62
chunky_png 5 29 75 29 20 29
erubi 5 61 75 61 20 61
erubi_rails 5 1021 75 1021 20 1021
fannkuchredux 5 15 75 15 20 15
lee 5 20 75 20 20 20
nbody 5 261 75 261 20 261
optcarrot 5 15 75 15 20 15
rubykon 5 15 37 15 20 15
30k_ifelse 5 55 75 55 20 55
30k_methods 5 22 30 22 20 22
cfunc_itself 5 413 75 413 20 413
fib 5 315 75 315 20 315
getivar 5 630 75 630 20 630
keyword_args 5 364 75 364 20 364
respond_to 5 101 75 101 20 101
setivar 5 944 75 944 20 944
str_concat 5 491 75 491 20 491

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) 1036571 779794 131 1266 0 0% 0 0 0
hexapdf (click) 1149979 923807 683 8015 9 0% 0 0 0
liquid-render (click) 517467 402648 150 1678 2 0% 0 0 0
mail (click) 905499 652770 374 5371 17 0% 0 0 0
psych-load (click) 346843 263030 68 480 1 0% 0 0 0
railsbench (click) 2651803 1964228 1436 10008 16 0% 0 0 0
binarytrees (click) 171099 127751 13 58 0 0% 0 0 0
chunky_png (click) 391195 292331 88 1038 0 0% 0 0 0
erubi (click) 331355 252407 10 79 0 0% 0 0 0
erubi_rails (click) 1962203 1429093 300 2038 4 0% 0 0 0
fannkuchredux (click) 185051 137519 10 196 0 0% 0 0 0
lee (click) 386395 291653 58 632 0 0% 0 0 0
nbody (click) 181723 136946 12 171 0 0% 0 0 0
optcarrot (click) 513115 442113 207 3588 20 0% 0 0 0
rubykon (click) 321755 257578 144 1588 2 0% 0 0 0
30k_ifelse (click) 5560155 4348219 9265 57804 0 0% 0 0 0
30k_methods (click) 2175323 1656681 5784 19361 0 0% 0 0 0
cfunc_itself (click) 169627 126524 10 49 0 0% 0 0 0
fib (click) 167963 126082 10 38 0 0% 0 0 0
getivar (click) 169691 128169 10 65 0 0% 0 0 0
keyword_args (click) 170395 127165 11 51 0 0% 0 0 0
respond_to (click) 171739 127978 10 64 0 0% 0 0 0
setivar (click) 169755 127039 10 38 0 0% 0 0 0
str_concat (click) 169755 127371 12 62 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.