YJIT Benchmarks

Details for Benchmarks at 2022-04-17 19:13:40

Overall YJIT is 32.0% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 29.9% 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 5 183 75 183 20 183
hexapdf 5 15 20 15
liquid-render 5 156 75 156 20 156
mail 5 122 75 122 20 122
psych-load 5 15 75 15 20 15
railsbench 5 15 75 15 20 15
binarytrees 5 64 75 64 20 64
chunky_png 5 30 75 30 20 30
discourse 5 38 75 38 20 38
erubi 5 47 75 47 20 47
erubi_rails 5 978 75 978 20 978
fannkuchredux 5 15 73 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 27 15 20 15
30k_ifelse 5 55 75 55 20 55
30k_methods 5 22 29 22 20 22
cfunc_itself 5 442 75 442 20 442
fib 5 320 75 320 20 320
getivar 5 789 75 789 20 789
keyword_args 5 377 75 377 20 377
respond_to 5 108 75 108 20 108
setivar 5 1782 75 1782 20 1782

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) 992273 813545 185 1185 0 0% 0 0 0
hexapdf (click) 1099281 922715 600 7888 427 5% 0 0 321
liquid-render (click) 500689 422592 143 1502 92 6% 0 0 5
mail (click) 846289 656792 324 4982 96 1% 0 0 111
psych-load (click) 341329 286443 59 434 1 0% 0 0 0
railsbench (click) 2600081 2106535 1297 9409 224 2% 0 0 26
binarytrees (click) 168209 137701 11 59 0 0% 0 0 0
chunky_png (click) 375057 308707 85 857 0 0% 0 0 0
discourse (click) 6238673 5591108 3127 26935 3184 11% 2 0 140
erubi (click) 327953 275863 10 79 0 0% 0 0 0
erubi_rails (click) 1956305 1596942 262 1887 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) 178769 145605 10 159 0 0% 0 0 0
optcarrot (click) 504913 450954 198 3575 20 0% 0 0 0
rubykon (click) 310929 259101 140 1529 1 0% 0 0 0
30k_ifelse (click) 5557265 4358025 9263 57805 0 0% 0 0 0
30k_methods (click) 2173137 1667238 5782 19361 0 0% 0 0 0
cfunc_itself (click) 167185 136659 8 50 0 0% 0 0 0
fib (click) 165777 136267 8 39 0 0% 0 0 0
getivar (click) 167185 138871 8 65 0 0% 0 0 0
keyword_args (click) 168081 137300 9 52 0 0% 0 0 0
respond_to (click) 170641 138816 8 65 0 0% 0 0 0
setivar (click) 168465 138098 8 38 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.