YJIT Benchmarks

Details for Benchmarks at 2022-03-09 19:12:29

Overall YJIT is 34.1% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 31.7% 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 5 176 75 176 20 176
hexapdf 5 15 20 15
liquid-render 5 150 75 150 20 150
mail 5 124 75 124 20 124
psych-load 5 15 75 15 20 15
railsbench 5 15 75 15 20 15
binarytrees 5 69 75 69 20 69
chunky_png 5 30 75 30 20 30
discourse 5 34 75 34 20 34
erubi 5 47 75 47 20 47
erubi_rails 5 974 75 974 20 974
fannkuchredux 5 15 75 15 20 15
lee 5 22 75 22 20 22
nbody 5 284 75 284 20 284
optcarrot 5 15 75 15 20 15
rubykon 5 15 39 15 20 15
30k_ifelse 5 55 75 55 20 55
30k_methods 5 22 29 22 20 22
cfunc_itself 5 451 75 451 20 451
fib 5 319 75 319 20 319
getivar 5 796 75 796 20 796
keyword_args 5 377 75 377 20 377
respond_to 5 103 75 103 20 103
setivar 5 1908 75 1908 20 1908

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) 990481 759435 185 1199 0 0% 0 0 0
hexapdf (click) 1113233 912167 599 8167 613 7% 0 0 320
liquid-render (click) 485777 384410 143 1515 95 6% 0 0 1
mail (click) 895057 670671 324 5505 125 2% 0 0 39
psych-load (click) 319249 250887 59 434 1 0% 0 0 0
railsbench (click) 2536593 1933574 1297 9384 268 2% 0 0 26
binarytrees (click) 150929 115802 11 59 0 0% 0 0 0
chunky_png (click) 362961 281879 85 866 0 0% 0 0 0
discourse (click) 22698961 11399506 3133 285476 261960 91% 2 0 133
erubi (click) 320593 253821 10 79 0 0% 0 0 0
erubi_rails (click) 1907921 1436740 262 1906 18 0% 0 0 3
fannkuchredux (click) 164689 126500 8 189 0 0% 0 0 0
lee (click) 371665 292874 45 587 69 11% 0 0 12
nbody (click) 160209 123003 10 159 0 0% 0 0 0
optcarrot (click) 479121 420918 198 3576 20 0% 0 0 0
rubykon (click) 291793 235861 140 1531 1 0% 0 0 0
30k_ifelse (click) 5539985 4336126 9263 57805 0 0% 0 0 0
30k_methods (click) 2146705 1636760 5782 19362 0 0% 0 0 0
cfunc_itself (click) 149265 114318 8 50 0 0% 0 0 0
fib (click) 147857 113926 8 39 0 0% 0 0 0
getivar (click) 141265 108722 8 66 0 0% 0 0 0
keyword_args (click) 141841 107244 9 52 0 0% 0 0 0
respond_to (click) 143249 108170 8 65 0 0% 0 0 0
setivar (click) 141265 107246 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.