YJIT Benchmarks

Details for Benchmarks at 2022-04-13 19:15:05

Overall YJIT is 32.5% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 29.1% 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 5 152 75 152 20 152
mail 5 124 75 124 20 124
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 5 994 75 994 20 994
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 28 15 20 15
30k_ifelse 5 55 75 55 20 55
30k_methods 5 22 29 22 20 22
cfunc_itself 5 448 75 448 20 448
fib 5 320 75 320 20 320
getivar 5 782 75 782 20 782
keyword_args 5 377 75 377 20 377
respond_to 5 111 75 111 20 111
setivar 5 1906 75 1906 20 1906

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) 988881 808890 185 1185 0 0% 0 0 0
hexapdf (click) 1097489 919876 599 7910 428 5% 0 0 321
liquid-render (click) 502289 423900 143 1514 92 6% 0 0 5
mail (click) 881489 680736 325 5300 96 1% 0 0 111
psych-load (click) 339601 284349 59 434 1 0% 0 0 0
railsbench (click) 2596497 2104139 1297 9380 224 2% 0 0 26
binarytrees (click) 169681 138826 11 58 0 0% 0 0 0
chunky_png (click) 376465 310001 85 865 0 0% 0 0 0
discourse (click) 6191697 5565496 3089 26422 3119 11% 2 0 140
erubi (click) 329489 277123 10 79 0 0% 0 0 0
erubi_rails (click) 1956305 1595590 262 1870 12 0% 0 0 3
fannkuchredux (click) 183953 149853 8 188 0 0% 0 0 0
lee (click) 378513 315736 45 582 68 11% 0 0 13
nbody (click) 177937 144139 10 159 0 0% 0 0 0
optcarrot (click) 506193 451657 198 3575 20 0% 0 0 0
rubykon (click) 309713 258414 140 1524 1 0% 0 0 0
30k_ifelse (click) 5557457 4358447 9263 57804 0 0% 0 0 0
30k_methods (click) 2173137 1667238 5782 19361 0 0% 0 0 0
cfunc_itself (click) 165841 134864 8 50 0 0% 0 0 0
fib (click) 165969 136689 8 38 0 0% 0 0 0
getivar (click) 167185 138871 8 65 0 0% 0 0 0
keyword_args (click) 168273 137722 9 51 0 0% 0 0 0
respond_to (click) 169297 137021 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.