YJIT Benchmarks

Details for Benchmarks at 2021-08-31 18:00:17

Overall YJIT is 17.9% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 12.0% 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 10 121 10 120 10 154
liquid-render 10 97 10 111 10 119
psych-load 10 10 10 10 10 10
railsbench 10 10 10 10 10 10
binarytrees 10 42 10 69 10 53
fannkuchredux 10 10 10 10 10 10
jekyll 10 10 10 10 10 10
lee 10 10 10 13 10 10
nbody 10 166 10 273 10 169
optcarrot 10 10 10 10 10 10
30k_ifelse 10 10 10 10 10 48
30k_methods 10 10 10 10 10 17
cfunc_itself 10 198 10 327 10 477
fib 10 87 10 307 10 308
getivar 10 205 10 210 10 527
respond_to 10 77 10 90 10 116
setivar 10 280 10 265 10 433

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) 991716 855318 185 ? 0 0
liquid-render (click) 401438 363024 144 ? 0 0
psych-load (click) 161016 142412 57 ? 0 0
railsbench (click) 5157502 3138688 1285 ? 0 0
binarytrees (click) 103435 91256 10 ? 0 0
fannkuchredux (click) 100491 88866 7 ? 0 0
jekyll (click) 2212580 1802454 335 ? 0 0
lee (click) 191096 169182 86 ? 1 0
nbody (click) 102859 91264 8 ? 0 0
optcarrot (click) 607755 607080 287 ? 0 0
30k_ifelse (click) 5645451 5404776 9262 ? 0 0
30k_methods (click) 2233483 2212262 5781 ? 0 0
cfunc_itself (click) 103435 91306 7 ? 0 0
fib (click) 101323 89888 7 ? 0 0
getivar (click) 103179 92568 7 ? 0 0
respond_to (click) 104715 92450 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.