YJIT Benchmarks

Details for Benchmarks at 2021-08-31 21:00:24

Overall YJIT is 19.9% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 11.8% 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 10 126 10 120 10 161
liquid-render 10 96 10 112 10 122
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 10 169 10 272 10 171
optcarrot 10 10 10 10 10 10
30k_ifelse 10 10 10 10 10 47
30k_methods 10 10 10 10 10 17
cfunc_itself 10 196 10 338 10 469
fib 10 91 10 307 10 308
getivar 10 205 10 210 10 528
respond_to 10 76 10 89 10 115
setivar 10 282 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) 990820 854576 185 ? 0 0
liquid-render (click) 399262 360886 144 ? 0 0
psych-load (click) 161400 142726 57 ? 0 0
railsbench (click) 5159038 3139980 1285 ? 0 0
binarytrees (click) 103819 91572 10 ? 0 0
fannkuchredux (click) 100491 88866 7 ? 0 0
jekyll (click) 2209892 1800274 335 ? 0 0
lee (click) 191096 169182 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) 2233099 2211946 5781 ? 0 0
cfunc_itself (click) 103051 90992 7 ? 0 0
fib (click) 101387 89888 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.