YJIT Benchmarks

Details for Benchmarks at 2021-09-04 09:10:05

Overall YJIT is 21.5% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 13.9% 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 10 118 10 169
liquid-render 10 98 10 112 10 124
psych-load 10 10 10 10 10 10
railsbench 10 10 10 10 10 10
binarytrees 10 44 10 69 10 57
fannkuchredux 10 10 10 10 10 10
jekyll 10 10 10 10 10 10
lee 10 10 10 13 10 15
nbody 10 163 10 273 10 163
optcarrot 10 10 10 10 10 10
30k_ifelse 10 10 10 10 10 49
30k_methods 10 10 10 10 10 18
cfunc_itself 10 212 10 335 10 461
fib 10 88 10 308 10 333
getivar 10 211 10 211 10 529
respond_to 10 78 10 91 10 119
setivar 10 274 10 265 10 467

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) 1024294 898420 185 ? 0 0
liquid-render (click) 406048 370882 144 ? 0 0
psych-load (click) 166962 150334 57 ? 0 0
railsbench (click) 5238394 3244544 1291 ? 0 0
binarytrees (click) 105861 94644 10 ? 0 0
fannkuchredux (click) 105861 94738 7 ? 0 0
jekyll (click) 2235046 1840878 335 ? 0 0
lee (click) 208818 188122 86 ? 1 0
nbody (click) 104581 93980 8 ? 0 0
optcarrot (click) 631045 639098 287 ? 0 0
30k_ifelse (click) 5560773 5507278 9262 ? 0 0
30k_methods (click) 2191045 2277154 5781 ? 0 0
cfunc_itself (click) 104517 93608 7 ? 0 0
fib (click) 103109 92612 7 ? 0 0
getivar (click) 104837 95292 7 ? 0 0
respond_to (click) 106949 95582 7 ? 0 0
setivar (click) 104965 93836 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.