YJIT Benchmarks

Details for Benchmarks at 2021-10-22 19:09:22

Overall YJIT is 27.2% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 25.2% 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 MJIT3.0 warmups MJIT3.0 iters YJIT warmups YJIT iters
activerecord 10 129 10 119 10 176
hexapdf 10 10 10 10 10 10
liquid-render 10 105 10 111 10 147
mail 10 117 10 124 10 131
psych-load 10 10 10 10 10 10
railsbench 10 10 10 10 10 10
binarytrees 10 44 10 69 10 57
fannkuchredux 10 10 10 10 10 10
jekyll 10 10 10 10 10 10
lee 10 10 10 13 10 16
nbody 10 176 10 331 10 253
optcarrot 10 10 10 10 10 10
30k_ifelse 10 10 10 10 10 53
30k_methods 10 10 10 10 10 17
cfunc_itself 10 207 10 339 10 507
fib 10 92 10 307 10 375
getivar 10 214 10 210 10 529
keyword_args 10 74 10 97 10 432
respond_to 10 77 10 89 10 112
setivar 10 285 10 265 10 460

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) 1109978 865151 185 1149 0 0% 0 0 0
hexapdf (click) 1065972 892227 603 7827 619 7% 0 0 320
liquid-render (click) 455188 372872 143 1247 94 7% 0 0 1
mail (click) 1020762 790286 337 5393 129 2% 0 0 39
psych-load (click) 184618 148933 56 409 1 0% 0 0 0
railsbench (click) 2566193 2000436 1293 9591 262 2% 0 0 26
binarytrees (click) 113853 90204 9 49 0 0% 0 0 0
fannkuchredux (click) 129533 103583 6 203 0 0% 0 0 0
jekyll (click) 1960090 1630150 336 3732 173 4% 0 0 0
lee (click) 234858 181551 85 1091 114 10% 1 0 13
nbody (click) 122941 97556 8 149 0 0% 0 0 0
optcarrot (click) 459389 429858 196 3567 20 0% 0 0 0
30k_ifelse (click) 5561085 4890887 9261 57795 0 0% 0 0 0
30k_methods (click) 2118013 1816950 5780 19352 0 0% 0 0 0
cfunc_itself (click) 111933 88397 6 40 0 0% 0 0 0
fib (click) 110461 87838 6 29 0 0% 0 0 0
getivar (click) 112253 90679 6 56 0 0% 0 0 0
keyword_args (click) 112765 89153 7 42 0 0% 0 0 0
respond_to (click) 114557 90187 6 55 0 0% 0 0 0
setivar (click) 112253 88988 6 29 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.