YJIT Benchmarks

Details for Benchmarks at 2021-10-13 19:09:27

Overall YJIT is 26.1% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 17.9% 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 10 130 10 123 10 178
hexapdf 10 10 10 10 10 10
liquid-render 10 106 10 113 10 150
mail 10 119 10 124 10 133
psych-load 10 10 10 10 10 10
railsbench 10 10 10 10 10 10
binarytrees 10 44 10 69 10 59
fannkuchredux 10 10 10 10 10 10
jekyll 10 10 10 10 10 10
lee 10 10 10 13 10 16
nbody 10 174 10 332 10 255
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 10 217 10 339 10 486
fib 10 94 10 308 10 375
getivar 10 213 10 211 10 530
keyword_args 10 74 10 97 10 426
respond_to 10 78 10 90 10 107
setivar 10 273 10 262 10 458

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) 1113370 867219 185 1166 0 0% 0 0 0
hexapdf (click) 975937 816699 602 7881 675 8% 0 0 320
liquid-render (click) 456916 373817 143 1267 94 7% 0 0 1
mail (click) 969818 749107 337 4999 129 2% 0 0 39
psych-load (click) 185450 149557 56 409 1 0% 0 0 0
railsbench (click) 2562929 1996541 1293 9560 262 2% 0 0 26
binarytrees (click) 112957 89432 9 49 0 0% 0 0 0
fannkuchredux (click) 129981 103829 6 203 0 0% 0 0 0
jekyll (click) 1964378 1633289 336 3731 173 4% 0 0 0
lee (click) 234282 181025 85 1091 114 10% 1 0 13
nbody (click) 122365 97162 8 149 0 0% 0 0 0
optcarrot (click) 459709 430104 196 3567 20 0% 0 0 0
30k_ifelse (click) 5560573 4890361 9261 57795 0 0% 0 0 0
30k_methods (click) 2118077 1816950 5780 19352 0 0% 0 0 0
cfunc_itself (click) 111997 88265 6 40 0 0% 0 0 0
fib (click) 110397 87838 6 29 0 0% 0 0 0
getivar (click) 112573 91057 6 56 0 0% 0 0 0
keyword_args (click) 112829 89021 7 42 0 0% 0 0 0
respond_to (click) 114557 90187 6 55 0 0% 0 0 0
setivar (click) 112573 89366 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.