YJIT Benchmarks

Details for Benchmarks at 2022-04-20 19:12:22

Overall YJIT is 31.5% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 29.7% 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 MJIT warmups MJIT iters YJIT warmups YJIT iters
activerecord 5 182 75 182 20 182
hexapdf 5 15 20 15
liquid-render 5 157 75 157 20 157
mail 5 123 75 123 20 123
psych-load 5 15 75 15 20 15
railsbench 5 15 75 15 20 15
binarytrees 5 61 75 61 20 61
chunky_png 5 30 75 30 20 30
discourse 5 39 75 39 20 39
erubi 5 47 75 47 20 47
erubi_rails 5 966 75 966 20 966
fannkuchredux 5 15 75 15 20 15
lee 5 21 75 21 20 21
nbody 5 275 75 275 20 275
optcarrot 5 15 75 15 20 15
rubykon 5 15 28 15 20 15
30k_ifelse 5 56 75 56 20 56
30k_methods 5 22 29 22 20 22
cfunc_itself 5 447 75 447 20 447
fib 5 320 75 320 20 320
getivar 5 778 75 778 20 778
keyword_args 5 379 75 379 20 379
respond_to 5 107 75 107 20 107
setivar 5 1779 75 1779 20 1779

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) 991953 811694 185 1185 0 0% 0 0 0
hexapdf (click) 1099025 922561 599 7889 427 5% 0 0 321
liquid-render (click) 499217 420737 143 1486 92 6% 0 0 5
mail (click) 850961 659779 324 5014 96 1% 0 0 111
psych-load (click) 341329 286443 59 434 1 0% 0 0 0
railsbench (click) 2598097 2103601 1297 9371 224 2% 0 0 26
binarytrees (click) 169681 138826 11 58 0 0% 0 0 0
chunky_png (click) 376337 309841 85 864 0 0% 0 0 0
discourse (click) 6241553 5597196 3128 27021 3247 12% 2 0 140
erubi (click) 327889 275812 10 79 0 0% 0 0 0
erubi_rails (click) 1954769 1594982 262 1865 12 0% 0 0 3
fannkuchredux (click) 183441 149524 8 188 0 0% 0 0 0
lee (click) 378513 315736 45 582 68 11% 0 0 13
nbody (click) 178449 144468 10 159 0 0% 0 0 0
optcarrot (click) 505169 449769 198 3576 20 0% 0 0 0
rubykon (click) 310225 258581 140 1525 1 0% 0 0 0
30k_ifelse (click) 5558161 4358874 9263 57806 0 0% 0 0 0
30k_methods (click) 2172113 1665350 5782 19362 0 0% 0 0 0
cfunc_itself (click) 168145 137455 8 49 0 0% 0 0 0
fib (click) 165713 135175 8 39 0 0% 0 0 0
getivar (click) 166161 136983 8 66 0 0% 0 0 0
keyword_args (click) 167761 137393 9 51 0 0% 0 0 0
respond_to (click) 170833 139238 8 64 0 0% 0 0 0
setivar (click) 166673 135836 8 39 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.