YJIT Benchmarks

Details for Benchmarks at 2022-03-21 19:17:49

Overall YJIT is 32.5% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 30.9% 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 5 154 75 154 20 154
mail 5 123 75 123 20 123
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 36 75 36 20 36
erubi 5 48 75 48 20 48
erubi_rails 5 981 75 981 20 981
fannkuchredux 5 15 75 15 20 15
lee 5 22 75 22 20 22
nbody 5 284 75 284 20 284
optcarrot 5 15 75 15 20 15
rubykon 5 15 36 15 20 15
30k_ifelse 5 55 75 55 20 55
30k_methods 5 22 29 22 20 22
cfunc_itself 5 427 75 427 20 427
fib 5 320 75 320 20 320
getivar 5 806 75 806 20 806
keyword_args 5 379 75 379 20 379
respond_to 5 101 75 101 20 101
setivar 5 1805 75 1805 20 1805

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 761435 185 1199 0 0% 0 0 0
hexapdf (click) 1115153 913926 599 8167 613 7% 0 0 320
liquid-render (click) 486929 386441 143 1505 95 6% 0 0 1
mail (click) 889425 667697 324 5440 125 2% 0 0 39
psych-load (click) 331089 261999 59 434 1 0% 0 0 0
railsbench (click) 2534481 1932349 1297 9349 268 2% 0 0 26
binarytrees (click) 152785 117312 11 59 0 0% 0 0 0
chunky_png (click) 366929 286346 85 865 0 0% 0 0 0
discourse (click) 23302545 11640384 3134 294975 271427 92% 2 0 133
erubi (click) 309777 243957 10 79 0 0% 0 0 0
erubi_rails (click) 1906641 1436601 262 1873 18 0% 0 0 3
fannkuchredux (click) 166033 127681 8 189 0 0% 0 0 0
lee (click) 366801 287978 45 587 69 11% 0 0 12
nbody (click) 161553 124224 10 159 0 0% 0 0 0
optcarrot (click) 488785 429814 198 3576 20 0% 0 0 0
rubykon (click) 293393 237150 140 1533 1 0% 0 0 0
30k_ifelse (click) 5541329 4337307 9263 57805 0 0% 0 0 0
30k_methods (click) 2156497 1645769 5782 19362 0 0% 0 0 0
cfunc_itself (click) 150737 115612 8 50 0 0% 0 0 0
fib (click) 149521 115333 8 39 0 0% 0 0 0
getivar (click) 151057 117731 8 66 0 0% 0 0 0
keyword_args (click) 151633 116253 9 52 0 0% 0 0 0
respond_to (click) 152913 117066 8 65 0 0% 0 0 0
setivar (click) 151569 116536 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.