YJIT Benchmarks

Details for Benchmarks at 2022-03-12 19:12:27

Overall YJIT is 33.2% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 29.6% 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 5 179 75 179 20 179
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 29 75 29 20 29
discourse 5 34 75 34 20 34
erubi 5 48 75 48 20 48
erubi_rails 5 988 75 988 20 988
fannkuchredux 5 15 75 15 20 15
lee 5 21 75 21 20 21
nbody 5 283 75 283 20 283
optcarrot 5 15 75 15 20 15
rubykon 5 15 38 15 20 15
30k_ifelse 5 56 75 56 20 56
30k_methods 5 22 29 22 20 22
cfunc_itself 5 444 75 444 20 444
fib 5 320 75 320 20 320
getivar 5 771 75 771 20 771
keyword_args 5 370 75 370 20 370
respond_to 5 109 75 109 20 109
setivar 5 1896 75 1896 20 1896

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) 991505 760542 185 1199 0 0% 0 0 0
hexapdf (click) 1113745 912522 599 8163 615 7% 0 0 320
liquid-render (click) 487377 386292 143 1566 95 6% 0 0 1
mail (click) 895889 671482 324 5505 125 2% 0 0 39
psych-load (click) 330321 261246 59 434 1 0% 0 0 0
railsbench (click) 2533201 1930950 1297 9323 268 2% 0 0 26
binarytrees (click) 152785 117312 11 59 0 0% 0 0 0
chunky_png (click) 364945 284881 85 857 0 0% 0 0 0
discourse (click) 22691025 11394927 3134 285398 261935 91% 2 0 133
erubi (click) 321425 254689 10 79 0 0% 0 0 0
erubi_rails (click) 1905105 1435287 262 1900 18 0% 0 0 3
fannkuchredux (click) 166033 127681 8 189 0 0% 0 0 0
lee (click) 372305 293432 45 587 69 11% 0 0 12
nbody (click) 162065 124513 10 159 0 0% 0 0 0
optcarrot (click) 489361 430143 198 3576 20 0% 0 0 0
rubykon (click) 285521 229841 141 1536 1 0% 0 0 0
30k_ifelse (click) 5541457 4337420 9263 57805 0 0% 0 0 0
30k_methods (click) 2156497 1645769 5782 19362 0 0% 0 0 0
cfunc_itself (click) 150865 115725 8 50 0 0% 0 0 0
fib (click) 149329 115220 8 39 0 0% 0 0 0
getivar (click) 151057 117731 8 66 0 0% 0 0 0
keyword_args (click) 151825 116366 9 52 0 0% 0 0 0
respond_to (click) 152913 117066 8 65 0 0% 0 0 0
setivar (click) 151185 116368 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.