YJIT Benchmarks

Details for Benchmarks at 2021-09-08 19:09:51

Overall YJIT is 19.8% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 14.6% 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 10 125 10 118 10 170
liquid-render 10 99 10 111 10 125
mail 10 120 10 124 10 132
psych-load 10 10 10 10 10 10
railsbench 10 10 10 10 10 10
binarytrees 10 44 10 69 10 60
fannkuchredux 10 10 10 10 10 10
jekyll 10 10 10 10 10 10
lee 10 10 10 13 10 15
nbody 10 159 10 273 10 164
optcarrot 10 10 10 10 10 10
30k_ifelse 10 10 10 10 10 51
30k_methods 10 10 10 10 10 18
cfunc_itself 10 213 10 339 10 479
fib 10 90 10 308 10 333
getivar 10 211 10 211 10 528
respond_to 10 78 10 90 10 117
setivar 10 273 10 265 10 462

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) 1024102 899810 185 ? 0 0
liquid-render (click) 406176 371574 144 ? 0 0
mail (click) 735206 664928 337 ? 0 0
psych-load (click) 166130 149924 57 ? 0 0
railsbench (click) 5223610 3235244 1291 ? 0 0
binarytrees (click) 105157 94254 10 ? 0 0
fannkuchredux (click) 105669 94832 7 ? 0 0
jekyll (click) 2221350 1832504 335 ? 0 0
lee (click) 209010 188592 86 ? 1 0
nbody (click) 104453 94074 8 ? 0 0
optcarrot (click) 630789 639092 287 ? 0 0
30k_ifelse (click) 5560709 5507472 9262 ? 0 0
30k_methods (click) 2190661 2276960 5781 ? 0 0
cfunc_itself (click) 104069 93314 7 ? 0 0
fib (click) 102981 92706 7 ? 0 0
getivar (click) 104261 94898 7 ? 0 0
respond_to (click) 106373 95188 7 ? 0 0
setivar (click) 104389 93442 7 ? 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.