YJIT Benchmarks

Details for Benchmarks at 2021-09-26 19:09:14

Overall YJIT is 22.5% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 16.3% 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 10 127 10 119 10 173
liquid-render 10 98 10 112 10 126
mail 10 122 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 10 165 10 332 10 260
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 10 202 10 329 10 477
fib 10 89 10 308 10 375
getivar 10 218 10 211 10 529
respond_to 10 73 10 87 10 111
setivar 10 291 10 262 10 471

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) 1091162 835434 185 1161 0 0% 0 0 0
liquid-render (click) 440596 353433 143 1222 92 7% 0 0 1
mail (click) 973530 744519 337 5117 125 2% 0 0 39
psych-load (click) 176554 139017 56 408 1 0% 0 0 0
railsbench (click) 2505329 1916855 1293 9317 255 2% 0 0 26
binarytrees (click) 107901 83079 9 49 0 0% 0 0 0
fannkuchredux (click) 123965 96704 6 203 0 0% 0 0 0
jekyll (click) 1948506 1593107 336 3762 173 4% 0 0 0
lee (click) 225258 170190 85 1045 111 10% 1 0 13
nbody (click) 117373 90809 8 149 0 0% 0 0 0
optcarrot (click) 644285 576410 286 5570 20 0% 0 0 0
30k_ifelse (click) 5555517 4884008 9261 57795 0 0% 0 0 0
30k_methods (click) 2112125 1809825 5780 19352 0 0% 0 0 0
cfunc_itself (click) 106365 81518 6 40 0 0% 0 0 0
fib (click) 104829 81091 6 29 0 0% 0 0 0
getivar (click) 107197 84326 6 56 0 0% 0 0 0
respond_to (click) 108605 83062 6 55 0 0% 0 0 0
setivar (click) 106621 82241 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.