YJIT Benchmarks

Details for Benchmarks at 2021-10-21 19:09:28

Overall YJIT is 26.2% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 18.6% 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 10 131 10 117 10 175
hexapdf 10 10 10 10 10 10
liquid-render 10 106 10 110 10 145
mail 10 118 10 125 10 133
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 16
nbody 10 176 10 324 10 255
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 10 206 10 337 10 507
fib 10 91 10 307 10 375
getivar 10 214 10 211 10 529
keyword_args 10 75 10 97 10 426
respond_to 10 76 10 88 10 107
setivar 10 274 10 262 10 461

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) 1112666 866837 185 1162 0 0% 0 0 0
hexapdf (click) 1066420 892473 603 7827 619 7% 0 0 320
liquid-render (click) 454292 372031 143 1243 94 7% 0 0 1
mail (click) 1017242 788146 337 5374 129 2% 0 0 39
psych-load (click) 185002 149311 56 409 1 0% 0 0 0
railsbench (click) 2571121 2002146 1293 9629 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) 1959194 1629088 336 3723 174 4% 0 0 0
lee (click) 235242 181797 85 1091 114 10% 1 0 13
nbody (click) 122877 97688 8 149 0 0% 0 0 0
optcarrot (click) 459453 429726 196 3567 20 0% 0 0 0
30k_ifelse (click) 5561149 4890755 9261 57795 0 0% 0 0 0
30k_methods (click) 2117629 1816704 5780 19352 0 0% 0 0 0
cfunc_itself (click) 111421 87871 6 40 0 0% 0 0 0
fib (click) 109885 87444 6 29 0 0% 0 0 0
getivar (click) 112253 90679 6 56 0 0% 0 0 0
keyword_args (click) 113213 89399 7 42 0 0% 0 0 0
respond_to (click) 114621 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.