YJIT Benchmarks

Details for Benchmarks at 2021-10-10 19:09:14

Overall YJIT is 28.1% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 19.7% 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.

Want Raw Graphs and CSV?

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 10 121 10 178
hexapdf 10 10 10 10 10 10
liquid-render 10 105 10 113 10 150
mail 10 118 10 124 10 132
psych-load 10 10 10 10 10 10
railsbench 10 10 10 10 10 10
binarytrees 10 44 10 68 10 58
fannkuchredux 10 10 10 10 10 10
jekyll 10 10 10 10 10 10
lee 10 10 10 13 10 15
nbody 10 172 10 331 10 257
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 10 212 10 334 10 478
fib 10 87 10 307 10 375
getivar 10 211 10 206 10 528
keyword_args 10 76 10 95 10 431
respond_to 10 76 10 89 10 108
setivar 10 283 10 261 10 504

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) 1110554 865326 185 1146 0 0% 0 0 0
hexapdf (click) 976001 816997 602 7877 675 8% 0 0 320
liquid-render (click) 458324 374690 143 1282 94 7% 0 0 1
mail (click) 987226 763343 337 5178 129 2% 0 0 39
psych-load (click) 184490 148785 56 409 1 0% 0 0 0
railsbench (click) 2565361 1998827 1293 9579 262 2% 0 0 26
binarytrees (click) 113533 89826 9 49 0 0% 0 0 0
fannkuchredux (click) 129917 103829 6 203 0 0% 0 0 0
jekyll (click) 1963994 1632732 336 3745 173 4% 0 0 0
lee (click) 235114 181797 85 1091 114 10% 1 0 13
nbody (click) 122941 97556 8 149 0 0% 0 0 0
optcarrot (click) 649725 584430 286 5576 20 0% 0 0 0
30k_ifelse (click) 5561149 4890755 9261 57795 0 0% 0 0 0
30k_methods (click) 2117437 1816556 5780 19352 0 0% 0 0 0
cfunc_itself (click) 111421 87871 6 40 0 0% 0 0 0
fib (click) 110461 87838 6 29 0 0% 0 0 0
getivar (click) 111677 90285 6 56 0 0% 0 0 0
keyword_args (click) 113149 89399 7 42 0 0% 0 0 0
respond_to (click) 114557 90187 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.