YJIT Benchmarks

Details for Benchmarks at 2021-10-20 19:09:34

Overall YJIT is 27.6% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 19.6% 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 10 128 10 119 10 176
hexapdf 10 10 10 10 10 10
liquid-render 10 105 10 113 10 148
mail 10 118 10 123 10 132
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 10 255
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 10 205 10 339 10 508
fib 10 93 10 308 10 375
getivar 10 212 10 211 10 529
keyword_args 10 74 10 98 10 432
respond_to 10 77 10 89 10 109
setivar 10 287 10 257 10 457

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) 1111578 865915 185 1151 0 0% 0 0 0
hexapdf (click) 1065908 892065 603 7827 619 7% 0 0 320
liquid-render (click) 457364 374424 143 1268 94 7% 0 0 1
mail (click) 976282 754602 337 5000 129 2% 0 0 39
psych-load (click) 185066 149179 56 409 1 0% 0 0 0
railsbench (click) 2560305 1995124 1293 9541 262 2% 0 0 26
binarytrees (click) 113917 90204 9 49 0 0% 0 0 0
fannkuchredux (click) 129917 103829 6 203 0 0% 0 0 0
jekyll (click) 1962138 1632309 336 3790 173 4% 0 0 0
lee (click) 235306 181797 85 1091 114 10% 1 0 13
nbody (click) 123325 97934 8 149 0 0% 0 0 0
optcarrot (click) 459453 429726 196 3567 20 0% 0 0 0
30k_ifelse (click) 5560573 4890361 9261 57795 0 0% 0 0 0
30k_methods (click) 2117117 1816178 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) 114237 89809 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.