YJIT Benchmarks

Details for Benchmarks at 2021-10-26 19:09:24

Overall YJIT is 28.6% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 22.1% 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 10 126 10 173
hexapdf 10 10 10 10 10 10
liquid-render 10 104 10 113 10 148
mail 10 118 10 125 10 132
psych-load 10 10 10 10 10 10
railsbench 10 10 10 10 10 10
binarytrees 10 44 10 70 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 10 330 10 256
optcarrot 10 10 10 10 10 10
rubykon 10 10 10 10 10 10
30k_ifelse 10 10 10 10 10 53
30k_methods 10 10 10 10 10 17
cfunc_itself 10 205 10 339 10 506
fib 10 94 10 307 10 375
getivar 10 214 10 211 10 529
keyword_args 10 75 10 98 10 429
respond_to 10 78 10 90 10 112
setivar 10 283 10 264 10 458

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) 1116442 870520 185 1156 0 0% 0 0 0
hexapdf (click) 1078324 903029 604 7829 619 7% 0 0 320
liquid-render (click) 462145 377809 143 1284 95 7% 0 0 1
mail (click) 866548 672266 339 5355 124 2% 0 0 39
psych-load (click) 193258 156510 56 409 1 0% 0 0 0
railsbench (click) 2587441 2020406 1293 9594 262 2% 0 0 26
binarytrees (click) 114794 91011 9 48 0 0% 0 0 0
fannkuchredux (click) 130538 104258 6 202 0 0% 0 0 0
jekyll (click) 1963674 1633070 336 3752 174 4% 0 0 0
lee (click) 234474 181175 85 1082 114 10% 1 0 13
nbody (click) 124266 98741 8 148 0 0% 0 0 0
optcarrot (click) 460394 430533 196 3566 20 0% 0 0 0
rubykon (click) 256170 221086 139 1503 1 0% 0 0 0
30k_ifelse (click) 5562026 4891694 9261 57794 0 0% 0 0 0
30k_methods (click) 2118634 1817379 5780 19351 0 0% 0 0 0
cfunc_itself (click) 112938 89072 6 39 0 0% 0 0 0
fib (click) 111786 89023 6 28 0 0% 0 0 0
getivar (click) 113194 91486 6 55 0 0% 0 0 0
keyword_args (click) 114090 90206 7 41 0 0% 0 0 0
respond_to (click) 115626 90994 6 54 0 0% 0 0 0
setivar (click) 113194 89795 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.