YJIT Benchmarks

Details for Benchmarks at 2021-10-21 07:09:53

Overall YJIT is 26.5% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 20.7% 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 10 127 10 118 10 169
hexapdf 10 10 10 10 10 10
liquid-render 10 102 10 109 10 144
mail 10 115 10 121 10 131
psych-load 10 10 10 10 10 10
railsbench 10 10 10 10 10 10
binarytrees 10 44 10 69 10 56
fannkuchredux 10 10 10 10 10 10
jekyll 10 10 10 10 10 10
lee 10 10 10 13 10 15
nbody 10 173 10 332 10 256
optcarrot 10 10 10 10 10 10
30k_ifelse 10 10 10 10 10 52
30k_methods 10 10 10 10 10 17
cfunc_itself 10 206 10 338 10 507
fib 10 91 10 307 10 375
getivar 10 212 10 211 10 529
keyword_args 10 75 10 97 10 428
respond_to 10 76 10 88 10 112
setivar 10 287 10 265 10 457

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) 1112218 866121 185 1156 0 0% 0 0 0
hexapdf (click) 1066036 892067 603 7825 619 7% 0 0 320
liquid-render (click) 454292 372031 143 1243 94 7% 0 0 1
mail (click) 977050 755294 337 4997 129 2% 0 0 39
psych-load (click) 185386 149557 56 409 1 0% 0 0 0
railsbench (click) 2564209 1998141 1293 9581 262 2% 0 0 26
binarytrees (click) 113853 90204 9 49 0 0% 0 0 0
fannkuchredux (click) 129597 103451 6 203 0 0% 0 0 0
jekyll (click) 1959386 1629397 336 3722 173 4% 0 0 0
lee (click) 234794 181551 85 1091 114 10% 1 0 13
nbody (click) 123005 97556 8 149 0 0% 0 0 0
optcarrot (click) 458877 429332 196 3567 20 0% 0 0 0
30k_ifelse (click) 5561085 4890887 9261 57795 0 0% 0 0 0
30k_methods (click) 2117117 1816178 5780 19352 0 0% 0 0 0
cfunc_itself (click) 111933 88397 6 40 0 0% 0 0 0
fib (click) 110461 87838 6 29 0 0% 0 0 0
getivar (click) 112189 90811 6 56 0 0% 0 0 0
keyword_args (click) 112765 89153 7 42 0 0% 0 0 0
respond_to (click) 114557 90187 6 55 0 0% 0 0 0
setivar (click) 112573 89366 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.