YJIT Benchmarks

Details for Benchmarks at 2021-09-27 21:23:50

Overall YJIT is 24.2% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 17.2% 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 10 120 10 117 10 172
liquid-render 10 98 10 112 10 128
mail 10 121 10 123 10 135
psych-load 10 10 10 10 10 10
railsbench 10 10 10 10 10 10
binarytrees 10 42 10 69 10 58
fannkuchredux 10 10 10 10 10 10
jekyll 10 10 10 10 10 10
lee 10 10 10 13 10 16
nbody 10 169 10 331 10 266
optcarrot 10 10 10 10 10 10
30k_ifelse 10 10 10 10 10 50
30k_methods 10 10 10 10 10 17
cfunc_itself 10 215 10 339 10 463
fib 10 92 10 307 10 375
getivar 10 219 10 211 10 529
respond_to 10 74 10 91 10 108
setivar 10 284 10 265 10 470

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) 1084058 832567 185 1141 0 0% 0 0 0
liquid-render (click) 438932 353468 143 1230 92 7% 0 0 1
mail (click) 953562 730983 337 4974 129 2% 0 0 39
psych-load (click) 175466 138923 56 408 1 0% 0 0 0
railsbench (click) 2498481 1917091 1293 9344 255 2% 0 0 26
binarytrees (click) 106493 82739 9 49 0 0% 0 0 0
fannkuchredux (click) 122493 96364 6 203 0 0% 0 0 0
jekyll (click) 1937434 1591674 336 3739 174 4% 0 0 0
lee (click) 223722 169830 85 1046 111 10% 1 0 13
nbody (click) 116413 90863 8 149 0 0% 0 0 0
optcarrot (click) 642621 575922 286 5570 20 0% 0 0 0
30k_ifelse (click) 5554621 4884062 9261 57795 0 0% 0 0 0
30k_methods (click) 2110781 1809633 5780 19352 0 0% 0 0 0
cfunc_itself (click) 104893 81178 6 40 0 0% 0 0 0
fib (click) 103357 80751 6 29 0 0% 0 0 0
getivar (click) 105725 83986 6 56 0 0% 0 0 0
respond_to (click) 107133 82722 6 55 0 0% 0 0 0
setivar (click) 105789 82295 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.