YJIT Benchmarks

Details for Benchmarks at 2022-04-27 07:18:00

Overall YJIT is 31.2% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 30.5% 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 5 179 75 179 20 179
hexapdf 5 15 20 15
liquid-render 5 153 75 153 20 153
mail 5 123 75 123 20 123
psych-load 5 15 75 15 20 15
railsbench 5 15 75 15 20 15
binarytrees 5 65 75 65 20 65
chunky_png 5 30 75 30 20 30
discourse 5 40 75 40 20 40
erubi 5 47 75 47 20 47
erubi_rails 5 982 75 982 20 982
fannkuchredux 5 15 75 15 20 15
lee 5 22 75 22 20 22
nbody 5 274 75 274 20 274
optcarrot 5 15 75 15 20 15
rubykon 5 15 28 15 20 15
30k_ifelse 5 56 75 56 20 56
30k_methods 5 22 28 22 20 22
cfunc_itself 5 445 75 445 20 445
fib 5 318 75 318 20 318
getivar 5 779 75 779 20 779
keyword_args 5 377 75 377 20 377
respond_to 5 107 75 107 20 107
setivar 5 1875 75 1875 20 1875

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) 994897 816209 185 1189 0 0% 0 0 0
hexapdf (click) 1099665 922828 600 7901 428 5% 0 0 321
liquid-render (click) 507217 428136 143 1562 92 5% 0 0 5
mail (click) 845969 656732 324 4979 96 1% 0 0 111
psych-load (click) 340881 285717 59 434 1 0% 0 0 0
railsbench (click) 2586129 2094366 1297 9285 224 2% 0 0 26
binarytrees (click) 168657 136938 11 59 0 0% 0 0 0
chunky_png (click) 374353 308124 85 859 0 0% 0 0 0
discourse (click) 6298833 5650721 3176 27469 3250 11% 2 0 140
erubi (click) 328721 276186 10 79 0 0% 0 0 0
erubi_rails (click) 1956241 1595858 262 1872 12 0% 0 0 3
fannkuchredux (click) 182673 149150 8 188 0 0% 0 0 0
lee (click) 374801 312203 45 582 69 11% 0 0 13
nbody (click) 178769 145605 10 159 0 0% 0 0 0
optcarrot (click) 504721 450532 198 3576 20 0% 0 0 0
rubykon (click) 310033 258460 140 1536 1 0% 0 0 0
30k_ifelse (click) 5558545 4358728 9263 57805 0 0% 0 0 0
30k_methods (click) 2173905 1667612 5782 19361 0 0% 0 0 0
cfunc_itself (click) 167953 137033 8 50 0 0% 0 0 0
fib (click) 165713 135175 8 39 0 0% 0 0 0
getivar (click) 167185 138871 8 65 0 0% 0 0 0
keyword_args (click) 167761 137393 9 51 0 0% 0 0 0
respond_to (click) 169553 138535 8 64 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.