YJIT Benchmarks

Details for Benchmarks at 2021-10-09 07:09:57

Overall YJIT is 28.2% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 24.1% 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 10 128 10 118 10 179
hexapdf 10 10 10 10 10 10
liquid-render 10 106 10 114 10 145
mail 10 120 10 124 10 131
psych-load 10 10 10 10 10 10
railsbench 10 10 10 10 10 10
binarytrees 10 44 10 67 10 58
fannkuchredux 10 10 10 10 10 10
jekyll 10 10 10 10 10 10
lee 10 10 10 13 10 16
nbody 10 167 10 331 10 258
optcarrot 10 10 10 10 10 10
30k_ifelse 10 10 10 10 10 53
30k_methods 10 10 10 10 10 17
cfunc_itself 10 209 10 338 10 492
fib 10 93 10 306 10 375
getivar 10 212 10 211 10 529
keyword_args 10 76 10 97 10 428
respond_to 10 77 10 90 10 108
setivar 10 282 10 253 10 519

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) 1113242 867112 185 1163 0 0% 0 0 0
hexapdf (click) 975553 816566 602 7876 677 8% 0 0 320
liquid-render (click) 455380 372737 143 1247 94 7% 0 0 1
mail (click) 973018 751939 337 5032 129 2% 0 0 39
psych-load (click) 185322 149557 56 409 1 0% 0 0 0
railsbench (click) 2556145 1992642 1293 9499 262 2% 0 0 26
binarytrees (click) 113853 90204 9 49 0 0% 0 0 0
fannkuchredux (click) 129341 103435 6 203 0 0% 0 0 0
jekyll (click) 1963482 1632880 336 3770 173 4% 0 0 0
lee (click) 234922 181419 85 1091 114 10% 1 0 13
nbody (click) 123261 97934 8 149 0 0% 0 0 0
optcarrot (click) 650045 584808 286 5576 20 0% 0 0 0
30k_ifelse (click) 5561533 4891133 9261 57795 0 0% 0 0 0
30k_methods (click) 2117693 1816572 5780 19352 0 0% 0 0 0
cfunc_itself (click) 112381 88643 6 40 0 0% 0 0 0
fib (click) 110461 87838 6 29 0 0% 0 0 0
getivar (click) 112573 91057 6 56 0 0% 0 0 0
keyword_args (click) 112765 89021 7 42 0 0% 0 0 0
respond_to (click) 114557 90187 6 55 0 0% 0 0 0
setivar (click) 112189 88988 6 29 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.