YJIT Benchmarks

Details for Benchmarks at 2022-04-12 19:14:03

Overall YJIT is 32.0% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 28.7% 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 5 184 75 184 20 184
hexapdf 5 15 20 15
liquid-render 5 156 75 156 20 156
mail 5 123 75 123 20 123
psych-load 5 15 75 15 20 15
railsbench 5 15 75 15 20 15
binarytrees 5 60 75 60 20 60
chunky_png 5 29 75 29 20 29
discourse 5 40 75 40 20 40
erubi 5 47 75 47 20 47
erubi_rails 5 951 75 951 20 951
fannkuchredux 5 15 73 15 20 15
lee 5 22 75 22 20 22
nbody 5 275 75 275 20 275
optcarrot 5 15 75 15 20 15
rubykon 5 15 26 15 20 15
30k_ifelse 5 55 75 55 20 55
30k_methods 5 22 29 22 20 22
cfunc_itself 5 447 75 447 20 447
fib 5 319 75 319 20 319
getivar 5 768 75 768 20 768
keyword_args 5 376 75 376 20 376
respond_to 5 110 75 110 20 110
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) 992977 814296 185 1185 0 0% 0 0 0
hexapdf (click) 1098897 922924 599 7892 429 5% 0 0 321
liquid-render (click) 499985 422121 143 1496 92 6% 0 0 5
mail (click) 846289 656834 324 4977 96 1% 0 0 111
psych-load (click) 341329 286443 59 434 1 0% 0 0 0
railsbench (click) 2593617 2101296 1297 9348 225 2% 0 0 26
binarytrees (click) 169681 138826 11 58 0 0% 0 0 0
chunky_png (click) 375441 309202 85 857 0 0% 0 0 0
discourse (click) 6252945 5616574 3128 27004 3258 12% 2 0 140
erubi (click) 329169 276912 10 79 0 0% 0 0 0
erubi_rails (click) 1960273 1599330 262 1916 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) 178961 146027 10 158 0 0% 0 0 0
optcarrot (click) 505425 451283 198 3575 20 0% 0 0 0
rubykon (click) 310737 258739 140 1525 1 0% 0 0 0
30k_ifelse (click) 5558737 4359150 9263 57804 0 0% 0 0 0
30k_methods (click) 2173137 1667238 5782 19361 0 0% 0 0 0
cfunc_itself (click) 167377 137081 8 49 0 0% 0 0 0
fib (click) 165969 136689 8 38 0 0% 0 0 0
getivar (click) 168465 139574 8 65 0 0% 0 0 0
keyword_args (click) 168273 137722 9 51 0 0% 0 0 0
respond_to (click) 170321 138909 8 64 0 0% 0 0 0
setivar (click) 166161 135507 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.