YJIT Benchmarks

Details for Benchmarks at 2022-01-12 11:39:53

Overall YJIT is 29.0% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 27.4% 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 MJIT warmups MJIT iters YJIT warmups YJIT iters
activerecord 5 185 20 185 75 185 20 185
hexapdf 5 15 20 15 20 15
liquid-render 5 162 20 162 75 162 20 162
mail 5 141 20 141 75 141 20 141
psych-load 5 15 20 15 75 15 20 15
railsbench 5 15 20 15 75 15 20 15
binarytrees 5 85 20 85 75 85 20 85
erubi 5 56 20 56 75 56 20 56
erubi_rails 5 973 20 973 75 973 20 973
fannkuchredux 5 15 20 15 54 15 20 15
lee 5 26 20 26 75 26 20 26
nbody 5 345 20 345 75 345 20 345
optcarrot 5 15 20 15 75 15 20 15
rubykon 5 15 20 15 43 15 20 15
30k_ifelse 5 62 20 62 70 62 20 62
30k_methods 5 27 20 27 41 27 20 27
cfunc_itself 5 509 20 509 75 509 20 509
fib 5 383 20 383 75 383 20 383
getivar 5 564 20 564 75 564 20 564
keyword_args 5 431 20 431 75 431 20 431
respond_to 5 124 20 124 75 124 20 124
setivar 5 456 20 456 75 456 20 456

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) 970705 743382 185 1198 0 0% 0 0 0
hexapdf (click) 1118929 917060 599 8164 615 7% 0 0 321
liquid-render (click) 476561 378988 144 1540 95 6% 0 0 1
mail (click) 871569 649147 325 5537 124 2% 0 0 39
psych-load (click) 302417 236886 59 433 1 0% 0 0 0
railsbench (click) 2517009 1913715 1297 9312 269 2% 0 0 26
binarytrees (click) 113745 87077 10 54 0 0% 0 0 0
erubi (click) 291857 231182 9 73 0 0% 0 0 0
erubi_rails (click) 1895185 1425860 261 1958 18 0% 0 0 3
fannkuchredux (click) 127633 97888 7 184 0 0% 0 0 0
lee (click) 333713 262779 45 586 72 12% 0 0 12
nbody (click) 123025 94278 9 154 0 0% 0 0 0
optcarrot (click) 450385 400021 197 3571 20 0% 0 0 0
rubykon (click) 254993 207459 140 1528 1 0% 0 0 0
30k_ifelse (click) 5502801 4307401 9262 57800 0 0% 0 0 0
30k_methods (click) 2117969 1615863 5781 19357 0 0% 0 0 0
cfunc_itself (click) 112273 85706 7 45 0 0% 0 0 0
fib (click) 110801 85314 7 34 0 0% 0 0 0
getivar (click) 112657 87938 7 61 0 0% 0 0 0
keyword_args (click) 113233 86460 8 47 0 0% 0 0 0
respond_to (click) 114449 87160 7 60 0 0% 0 0 0
setivar (click) 112657 86462 7 34 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.