YJIT Benchmarks

Details for Benchmarks at 2021-10-23 19:09:30

Overall YJIT is 27.2% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 15.4% 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 10 173
hexapdf 10 10 10 10 10 10
liquid-render 10 102 10 112 10 149
mail 10 118 10 124 10 131
psych-load 10 10 10 10 10 10
railsbench 10 10 10 10 10 10
binarytrees 10 44 10 68 10 57
fannkuchredux 10 10 10 10 10 10
jekyll 10 10 10 10 10 10
lee 10 10 10 13 10 16
nbody 10 175 10 332 10 256
optcarrot 10 10 10 10 10 10
30k_ifelse 10 10 10 10 10 50
30k_methods 10 10 10 10 10 16
cfunc_itself 10 204 10 338 10 507
fib 10 93 10 308 10 375
getivar 10 212 10 211 10 529
keyword_args 10 73 10 97 10 417
respond_to 10 78 10 91 10 110
setivar 10 286 10 265 10 434

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) 1110362 865343 185 1157 0 0% 0 0 0
hexapdf (click) 1066484 892361 604 7831 619 7% 0 0 320
liquid-render (click) 459540 375872 143 1271 94 7% 0 0 1
mail (click) 982618 760265 337 5014 129 2% 0 0 39
psych-load (click) 192234 155832 56 409 1 0% 0 0 0
railsbench (click) 2561201 1996672 1293 9546 262 2% 0 0 26
binarytrees (click) 113917 90204 9 49 0 0% 0 0 0
fannkuchredux (click) 129533 103583 6 203 0 0% 0 0 0
jekyll (click) 1960794 1631196 336 3760 173 4% 0 0 0
lee (click) 235178 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) 5561149 4890755 9261 57795 0 0% 0 0 0
30k_methods (click) 2117693 1816572 5780 19352 0 0% 0 0 0
cfunc_itself (click) 111997 88265 6 40 0 0% 0 0 0
fib (click) 110717 88216 6 29 0 0% 0 0 0
getivar (click) 112637 91057 6 56 0 0% 0 0 0
keyword_args (click) 112829 89021 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.