YJIT Benchmarks

Details for Benchmarks at 2022-08-31 20:13:54

Overall YJIT is 34.4% 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 5 190 75 190 20 190
hexapdf 5 15 20 15
liquid-render 5 160 75 160 20 160
mail 5 124 75 124 20 124
psych-load 5 15 75 15 20 15
railsbench 5 15 75 15 20 15
binarytrees 5 64 75 64 20 64
chunky_png 5 29 75 29 20 29
erubi 5 60 75 60 20 60
erubi_rails 5 1028 75 1028 20 1028
fannkuchredux 5 15 75 15 20 15
lee 5 20 75 20 20 20
nbody 5 259 75 259 20 259
optcarrot 5 15 75 15 20 15
rubykon 5 15 37 15 20 15
30k_ifelse 5 50 69 50 20 50
30k_methods 5 24 22 24 20 24
cfunc_itself 5 424 75 424 20 424
fib 5 301 75 301 20 301
getivar 5 616 75 616 20 616
keyword_args 5 358 75 358 20 358
respond_to 5 99 75 99 20 99
setivar 5 985 75 985 20 985
str_concat 5 414 75 414 20 414

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) 1120387 779288 131 1271 0 0% 0 0 0
hexapdf (click) 1251779 923725 683 8020 9 0% 0 0 0
liquid-render (click) 558723 400789 150 1650 2 0% 0 0 0
mail (click) 1002307 669299 375 5618 17 0% 0 0 0
psych-load (click) 376067 263576 68 482 1 0% 0 0 0
railsbench (click) 2875395 1968089 1436 10016 16 0% 0 0 0
binarytrees (click) 184835 127751 13 58 0 0% 0 0 0
chunky_png (click) 419587 290678 88 1008 0 0% 0 0 0
erubi (click) 358851 252482 10 79 0 0% 0 0 0
erubi_rails (click) 2130371 1431525 300 2005 4 0% 0 0 0
fannkuchredux (click) 199683 137519 10 196 0 0% 0 0 0
lee (click) 416899 290541 58 632 0 0% 0 0 0
nbody (click) 197059 137324 12 171 0 0% 0 0 0
optcarrot (click) 563331 442347 207 3588 20 0% 0 0 0
rubykon (click) 346755 255866 144 1569 2 0% 0 0 0
30k_ifelse (click) 5920643 4348219 9265 57804 0 0% 0 0 0
30k_methods (click) 2288195 1657009 5784 19361 0 0% 0 0 0
cfunc_itself (click) 183363 126524 10 49 0 0% 0 0 0
fib (click) 181699 126132 10 38 0 0% 0 0 0
getivar (click) 183619 128219 10 65 0 0% 0 0 0
keyword_args (click) 184003 127115 11 51 0 0% 0 0 0
respond_to (click) 186179 128356 10 64 0 0% 0 0 0
setivar (click) 183683 127417 10 38 0 0% 0 0 0
str_concat (click) 183683 127749 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.