YJIT Benchmarks

Details for Benchmarks at 2021-10-04 07:09:56

Overall YJIT is 27.3% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 22.7% 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 10 119 10 117 10 175
liquid-render 10 100 10 110 10 122
mail 10 118 10 120 10 134
psych-load 10 10 10 10 10 10
railsbench 10 10 10 10 10 10
binarytrees 10 42 10 69 10 57
fannkuchredux 10 10 10 10 10 10
jekyll 10 10 10 10 10 10
lee 10 10 10 13 10 15
nbody 10 173 10 331 10 264
optcarrot 10 10 10 10 10 10
30k_ifelse 10 10 10 10 10 52
30k_methods 10 10 10 10 10 17
cfunc_itself 10 197 10 339 10 490
fib 10 86 10 307 10 375
getivar 10 200 10 211 10 527
keyword_args 10 73 10 97 10 73
respond_to 10 76 10 89 10 106
setivar 10 289 10 265 10 491

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) 1081626 838229 185 1143 0 0% 0 0 0
liquid-render (click) 435668 353961 143 1206 92 7% 0 0 1
mail (click) 982362 757829 337 5281 129 2% 0 0 39
psych-load (click) 175146 139498 56 408 1 0% 0 0 0
railsbench (click) 2497457 1933556 1293 9377 255 2% 0 0 26
binarytrees (click) 106685 83176 9 49 0 0% 0 0 0
fannkuchredux (click) 123133 97047 6 203 0 0% 0 0 0
jekyll (click) 1938522 1609548 336 3736 173 4% 0 0 0
lee (click) 223530 170102 85 1043 111 10% 1 0 13
nbody (click) 115901 90758 8 149 0 0% 0 0 0
optcarrot (click) 642685 577519 286 5575 20 0% 0 0 0
30k_ifelse (click) 5554301 4884105 9261 57795 0 0% 0 0 0
30k_methods (click) 2111229 1810168 5780 19352 0 0% 0 0 0
cfunc_itself (click) 105085 81615 6 40 0 0% 0 0 0
fib (click) 103421 81040 6 29 0 0% 0 0 0
getivar (click) 105213 83881 6 56 0 0% 0 0 0
keyword_args (click) 103293 80614 7 22 0 0% 0 0 0
respond_to (click) 107389 83159 6 55 0 0% 0 0 0
setivar (click) 105213 82190 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.