YJIT Benchmarks

Details for Benchmarks at 2022-03-11 07:12:44

Overall YJIT is 30.9% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 30.4% 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 5 156 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 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 5 967 75 967 20 967
fannkuchredux 5 15 75 15 20 15
lee 5 21 75 21 20 21
nbody 5 282 75 282 20 282
optcarrot 5 15 75 15 20 15
rubykon 5 15 37 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 5 319 75 319 20 319
getivar 5 767 75 767 20 767
keyword_args 5 378 75 378 20 378
respond_to 5 107 75 107 20 107
setivar 5 1913 75 1913 20 1913

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) 992017 760894 185 1199 0 0% 0 0 0
hexapdf (click) 1114449 913312 599 8163 615 7% 0 0 320
liquid-render (click) 488785 387732 143 1535 95 6% 0 0 1
mail (click) 891537 669118 324 5459 125 2% 0 0 39
psych-load (click) 330449 261359 59 434 1 0% 0 0 0
railsbench (click) 2534993 1932894 1297 9358 268 2% 0 0 26
binarytrees (click) 143953 109268 11 59 0 0% 0 0 0
chunky_png (click) 366225 285866 85 865 0 0% 0 0 0
discourse (click) 22649361 11359149 3094 284961 261790 91% 2 0 133
erubi (click) 310097 244186 10 79 0 0% 0 0 0
erubi_rails (click) 1905809 1435700 262 1873 18 0% 0 0 3
fannkuchredux (click) 166161 127794 8 189 0 0% 0 0 0
lee (click) 367825 288748 45 587 69 11% 0 0 12
nbody (click) 162065 124513 10 159 0 0% 0 0 0
optcarrot (click) 488977 429927 198 3576 20 0% 0 0 0
rubykon (click) 294161 237717 140 1540 1 0% 0 0 0
30k_ifelse (click) 5541329 4337307 9263 57805 0 0% 0 0 0
30k_methods (click) 2156497 1645769 5782 19362 0 0% 0 0 0
cfunc_itself (click) 150801 115206 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) 152017 116421 9 52 0 0% 0 0 0
respond_to (click) 153105 117179 8 65 0 0% 0 0 0
setivar (click) 151249 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.