YJIT Benchmarks

Details for Benchmarks at 2021-11-06 19:09:52

Overall YJIT is 27.2% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 20.6% 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 10 124 10 115 10 171
hexapdf 10 10 10 10 10 10
liquid-render 10 102 10 113 10 161
mail 10 117 10 119 10 131
psych-load 10 10 10 10 10 10
railsbench 10 10 10 10 10 10
binarytrees 10 49 10 69 10 63
fannkuchredux 10 10 10 10 10 10
jekyll 10 10 10 10 10 10
lee 10 10 10 14 10 15
nbody 10 176 10 324 10 265
optcarrot 10 10 10 10 10 10
rubykon 10 10 10 10 10 10
30k_ifelse 10 10 10 10 10 54
30k_methods 10 10 10 10 10 17
cfunc_itself 10 215 10 330 10 495
fib 10 93 10 307 10 374
getivar 10 229 10 196 10 542
keyword_args 10 72 10 97 10 424
respond_to 10 73 10 89 10 118
setivar 10 298 10 264 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) 969514 678600 184 1173 0 0% 0 0 0
hexapdf (click) 1087658 812786 604 8073 648 8% 0 0 320
liquid-render (click) 470007 342653 143 1431 96 6% 0 0 1
mail (click) 875754 602439 339 5438 124 2% 0 0 39
psych-load (click) 295969 210909 57 423 1 0% 0 0 0
railsbench (click) 2583906 1796051 1295 9649 263 2% 0 0 26
binarytrees (click) 113317 80608 9 48 0 0% 0 0 0
fannkuchredux (click) 128741 92269 6 202 0 0% 0 0 0
jekyll (click) 1885354 1390942 336 3886 180 4% 0 0 0
lee (click) 344618 239446 44 566 70 12% 0 0 12
nbody (click) 122149 87094 8 148 0 0% 0 0 0
optcarrot (click) 451109 380794 196 3566 20 0% 0 0 0
rubykon (click) 254757 196672 138 1522 1 0% 0 0 0
30k_ifelse (click) 5501925 4300583 9261 57794 0 0% 0 0 0
30k_methods (click) 2117029 1609045 5780 19351 0 0% 0 0 0
cfunc_itself (click) 111333 78888 6 39 0 0% 0 0 0
fib (click) 110373 78845 6 28 0 0% 0 0 0
getivar (click) 112101 81356 6 55 0 0% 0 0 0
keyword_args (click) 112165 79529 7 41 0 0% 0 0 0
respond_to (click) 113445 80222 6 54 0 0% 0 0 0
setivar (click) 111589 79664 6 28 0 0% 0 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.