YJIT Benchmarks

Details for Benchmarks at 2022-07-26 20:14:19

Overall YJIT is 34.5% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 28.3% 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 5 188 75 188 20 188
hexapdf 5 15 20 15
liquid-render 5 158 75 158 20 158
mail 5 127 75 127 20 127
psych-load 5 15 75 15 20 15
railsbench 5 15 75 15 20 15
binarytrees 5 63 75 63 20 63
chunky_png 5 31 75 31 20 31
erubi 5 62 75 62 20 62
erubi_rails 5 1029 75 1029 20 1029
fannkuchredux 5 15 74 15 20 15
lee 5 21 75 21 20 21
nbody 5 263 75 263 20 263
optcarrot 5 15 75 15 20 15
rubykon 5 15 36 15 20 15
30k_ifelse 5 56 75 56 20 56
30k_methods 5 22 30 22 20 22
cfunc_itself 5 420 75 420 20 420
fib 5 315 75 315 20 315
getivar 5 614 75 614 20 614
keyword_args 5 377 75 377 20 377
respond_to 5 109 75 109 20 109
setivar 5 958 75 958 20 958
str_concat 5 470 75 470 20 470

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) 1038555 780847 131 1262 0 0% 0 0 0
hexapdf (click) 1151771 925153 683 7972 9 0% 0 0 0
liquid-render (click) 516571 401650 150 1674 2 0% 0 0 0
mail (click) 942043 678093 374 5746 17 0% 0 0 0
psych-load (click) 348955 264499 68 476 1 0% 0 0 0
railsbench (click) 2651163 1963459 1436 9913 16 0% 0 0 0
binarytrees (click) 171739 128078 13 58 0 0% 0 0 0
chunky_png (click) 386971 289322 88 1002 0 0% 0 0 0
erubi (click) 322843 246214 10 79 0 0% 0 0 0
erubi_rails (click) 1963291 1429824 300 2016 4 0% 0 0 0
fannkuchredux (click) 185563 138208 10 188 0 0% 0 0 0
lee (click) 385819 291289 58 630 0 0% 0 0 0
nbody (click) 182811 137569 12 171 0 0% 0 0 0
optcarrot (click) 514203 442736 207 3588 20 0% 0 0 0
rubykon (click) 321819 257204 144 1576 1 0% 0 0 0
30k_ifelse (click) 5561243 4348842 9265 57804 0 0% 0 0 0
30k_methods (click) 2176411 1657304 5784 19361 0 0% 0 0 0
cfunc_itself (click) 170715 127147 10 49 0 0% 0 0 0
fib (click) 168731 126459 10 38 0 0% 0 0 0
getivar (click) 170459 128546 10 65 0 0% 0 0 0
keyword_args (click) 171547 127788 11 51 0 0% 0 0 0
respond_to (click) 172379 128305 10 64 0 0% 0 0 0
setivar (click) 170843 127662 10 38 0 0% 0 0 0
str_concat (click) 170843 128069 12 62 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.