YJIT Benchmarks

Details for Benchmarks at 2022-04-21 19:12:01

Overall YJIT is 33.0% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 32.1% 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 5 169 75 169 20 169
hexapdf 5 15 20 15
liquid-render 5 157 75 157 20 157
mail 5 122 75 122 20 122
psych-load 5 15 75 15 20 15
railsbench 5 15 75 15 20 15
binarytrees 5 60 75 60 20 60
chunky_png 5 30 75 30 20 30
discourse 5 38 75 38 20 38
erubi 5 48 75 48 20 48
erubi_rails 5 977 75 977 20 977
fannkuchredux 5 15 73 15 20 15
lee 5 22 75 22 20 22
nbody 5 275 75 275 20 275
optcarrot 5 15 75 15 20 15
rubykon 5 15 28 15 20 15
30k_ifelse 5 55 75 55 20 55
30k_methods 5 22 29 22 20 22
cfunc_itself 5 449 75 449 20 449
fib 5 320 75 320 20 320
getivar 5 769 75 769 20 769
keyword_args 5 355 75 355 20 355
respond_to 5 109 75 109 20 109
setivar 5 1902 75 1902 20 1902

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) 991569 813125 185 1185 0 0% 0 0 0
hexapdf (click) 1098961 922951 599 7891 427 5% 0 0 321
liquid-render (click) 502033 424610 143 1518 92 6% 0 0 5
mail (click) 846865 657229 324 4981 96 1% 0 0 111
psych-load (click) 341329 286443 59 434 1 0% 0 0 0
railsbench (click) 2601041 2105329 1297 9404 224 2% 0 0 26
binarytrees (click) 168401 138123 11 58 0 0% 0 0 0
chunky_png (click) 376465 310001 85 865 0 0% 0 0 0
discourse (click) 6245201 5609717 3127 26962 3244 12% 2 0 140
erubi (click) 329681 277241 10 79 0 0% 0 0 0
erubi_rails (click) 1956881 1595771 262 1893 12 0% 0 0 3
fannkuchredux (click) 183953 149853 8 188 0 0% 0 0 0
lee (click) 378513 315736 45 582 68 11% 0 0 13
nbody (click) 176657 143436 10 159 0 0% 0 0 0
optcarrot (click) 506705 451986 198 3575 20 0% 0 0 0
rubykon (click) 309521 258277 140 1531 1 0% 0 0 0
30k_ifelse (click) 5557777 4358354 9263 57805 0 0% 0 0 0
30k_methods (click) 2173137 1667238 5782 19361 0 0% 0 0 0
cfunc_itself (click) 167377 137081 8 49 0 0% 0 0 0
fib (click) 165969 136689 8 38 0 0% 0 0 0
getivar (click) 167697 139200 8 65 0 0% 0 0 0
keyword_args (click) 167249 135834 9 52 0 0% 0 0 0
respond_to (click) 170321 138909 8 64 0 0% 0 0 0
setivar (click) 167505 137302 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.