YJIT Benchmarks

Details for Benchmarks at 2022-03-15 19:12:57

Overall YJIT is 32.9% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 29.2% 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.

Want Raw Graphs and CSV?

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 5 178 75 178 20 178
hexapdf 5 15 20 15
liquid-render 5 157 75 157 20 157
mail 5 123 75 123 20 123
psych-load 5 15 75 15 20 15
railsbench 5 15 75 15 20 15
binarytrees 5 67 75 67 20 67
chunky_png 5 30 75 30 20 30
discourse 5 35 75 35 20 35
erubi 5 47 75 47 20 47
erubi_rails 5 990 75 990 20 990
fannkuchredux 5 15 75 15 20 15
lee 5 22 75 22 20 22
nbody 5 283 75 283 20 283
optcarrot 5 15 75 15 20 15
rubykon 5 15 38 15 20 15
30k_ifelse 5 55 75 55 20 55
30k_methods 5 22 29 22 20 22
cfunc_itself 5 449 75 449 20 449
fib 5 320 75 320 20 320
getivar 5 763 75 763 20 763
keyword_args 5 378 75 378 20 378
respond_to 5 109 75 109 20 109
setivar 5 1909 75 1909 20 1909

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) 990673 759684 185 1199 0 0% 0 0 0
hexapdf (click) 1114705 913353 600 8168 613 7% 0 0 320
liquid-render (click) 492817 391811 143 1552 95 6% 0 0 1
mail (click) 895057 671142 324 5497 125 2% 0 0 39
psych-load (click) 330321 260816 59 434 1 0% 0 0 0
railsbench (click) 2539665 1936594 1297 9366 268 2% 0 0 26
binarytrees (click) 151953 116409 11 59 0 0% 0 0 0
chunky_png (click) 365073 285041 85 858 0 0% 0 0 0
discourse (click) 22999889 11518859 3134 290210 266653 91% 2 0 133
erubi (click) 321617 254838 10 79 0 0% 0 0 0
erubi_rails (click) 1904529 1434230 262 1875 18 0% 0 0 3
fannkuchredux (click) 166161 127794 8 189 0 0% 0 0 0
lee (click) 366865 287978 45 587 69 11% 0 0 12
nbody (click) 161553 124184 10 159 0 0% 0 0 0
optcarrot (click) 488849 429408 198 3576 20 0% 0 0 0
rubykon (click) 293073 236977 140 1530 1 0% 0 0 0
30k_ifelse (click) 5541713 4337475 9263 57805 0 0% 0 0 0
30k_methods (click) 2156497 1645769 5782 19362 0 0% 0 0 0
cfunc_itself (click) 151249 115941 8 50 0 0% 0 0 0
fib (click) 149329 115220 8 39 0 0% 0 0 0
getivar (click) 150737 117157 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) 151121 115849 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.