YJIT Benchmarks

Details for Benchmarks at 2021-09-01 14:55:24

Overall YJIT is 20.2% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 16.1% 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 10 122 10 117 10 156
liquid-render 10 96 10 111 10 121
psych-load 10 10 10 10 10 10
railsbench 10 10 10 10 10 10
binarytrees 10 42 10 69 10 54
fannkuchredux 10 10 10 10 10 10
jekyll 10 10 10 10 10 10
lee 10 10 10 13 10 11
nbody 10 168 10 273 10 165
optcarrot 10 10 10 10 10 10
30k_ifelse 10 10 10 10 10 46
30k_methods 10 10 10 10 10 17
cfunc_itself 10 197 10 334 10 478
fib 10 91 10 307 10 307
getivar 10 205 10 210 10 527
respond_to 10 75 10 90 10 111
setivar 10 280 10 262 10 430

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) 993700 856826 185 ? 0 0
liquid-render (click) 398814 360386 144 ? 0 0
psych-load (click) 160824 142312 57 ? 0 0
railsbench (click) 5159422 3139792 1285 ? 0 0
binarytrees (click) 103819 91572 10 ? 0 0
fannkuchredux (click) 100683 88966 7 ? 0 0
jekyll (click) 2210084 1800218 335 ? 0 0
lee (click) 191288 169282 86 ? 1 0
nbody (click) 102859 91264 8 ? 0 0
optcarrot (click) 607563 606980 287 ? 0 0
30k_ifelse (click) 5645643 5404834 9262 ? 0 0
30k_methods (click) 2233419 2212262 5781 ? 0 0
cfunc_itself (click) 102859 90892 7 ? 0 0
fib (click) 101579 89986 7 ? 0 0
getivar (click) 102987 92468 7 ? 0 0
respond_to (click) 105099 92766 7 ? 0 0
setivar (click) 103115 91012 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.