YJIT Benchmarks

Details for Benchmarks at 2021-10-04 19:09:49

Overall YJIT is 24.4% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 22.3% 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 10 126 10 123 10 170
liquid-render 10 105 10 114 10 130
mail 10 124 10 125 10 139
psych-load 10 10 10 10 10 10
railsbench 10 10 10 10 10 10
binarytrees 10 43 10 65 10 58
fannkuchredux 10 10 10 10 10 10
jekyll 10 10 10 10 10 10
lee 10 10 10 13 10 16
nbody 10 167 10 322 10 263
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 10 336 10 476
fib 10 83 10 307 10 374
getivar 10 205 10 211 10 527
keyword_args 10 75 10 96 10 72
respond_to 10 71 10 89 10 107
setivar 10 279 10 263 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) 1108826 861755 185 1143 0 0% 0 0 0
liquid-render (click) 454100 369729 143 1238 94 7% 0 0 1
mail (click) 990426 764687 337 5215 129 2% 0 0 39
psych-load (click) 184554 148495 56 408 1 0% 0 0 0
railsbench (click) 2565553 1994068 1293 9587 262 2% 0 0 26
binarytrees (click) 113085 89308 9 49 0 0% 0 0 0
fannkuchredux (click) 129533 103179 6 203 0 0% 0 0 0
jekyll (click) 1955610 1624351 336 3759 174 4% 0 0 0
lee (click) 234218 179944 85 1083 114 10% 1 0 13
nbody (click) 122493 97038 8 149 0 0% 0 0 0
optcarrot (click) 649661 584045 286 5575 20 0% 0 0 0
30k_ifelse (click) 5560509 4890089 9261 57795 0 0% 0 0 0
30k_methods (click) 2117629 1816300 5780 19352 0 0% 0 0 0
cfunc_itself (click) 111485 87747 6 40 0 0% 0 0 0
fib (click) 110397 87566 6 29 0 0% 0 0 0
getivar (click) 112125 90407 6 56 0 0% 0 0 0
keyword_args (click) 109757 86746 7 22 0 0% 0 0 0
respond_to (click) 114173 89537 6 55 0 0% 0 0 0
setivar (click) 112189 88716 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.