YJIT Benchmarks

Details for Benchmarks at 2022-07-31 20:13:59

Overall YJIT is 35.3% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 34.7% 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 5 193 75 193 20 193
hexapdf 5 15 20 15
liquid-render 5 160 75 160 20 160
mail 5 126 75 126 20 126
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 63 75 63 20 63
erubi_rails 5 1034 75 1034 20 1034
fannkuchredux 5 15 74 15 20 15
lee 5 21 75 21 20 21
nbody 5 262 75 262 20 262
optcarrot 5 15 75 15 20 15
rubykon 5 15 37 15 20 15
30k_ifelse 5 56 75 56 20 56
30k_methods 5 22 30 22 20 22
cfunc_itself 5 447 75 447 20 447
fib 5 315 75 315 20 315
getivar 5 609 75 609 20 609
keyword_args 5 379 75 379 20 379
respond_to 5 103 75 103 20 103
setivar 5 958 75 958 20 958
str_concat 5 460 75 460 20 460

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) 1037339 780686 131 1296 0 0% 0 0 0
hexapdf (click) 1151323 925665 682 8017 9 0% 0 0 0
liquid-render (click) 522459 406692 150 1707 2 0% 0 0 0
mail (click) 931547 670102 374 5613 17 0% 0 0 0
psych-load (click) 348059 263793 68 482 1 0% 0 0 0
railsbench (click) 2654043 1966736 1436 9991 16 0% 0 0 0
binarytrees (click) 171739 128078 13 58 0 0% 0 0 0
chunky_png (click) 386971 289614 88 1002 0 0% 0 0 0
erubi (click) 323547 246784 10 79 0 0% 0 0 0
erubi_rails (click) 1961371 1429531 300 2006 4 0% 0 0 0
fannkuchredux (click) 186011 138504 10 188 0 0% 0 0 0
lee (click) 384539 290327 58 632 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) 322203 257420 144 1579 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) 169307 126755 10 38 0 0% 0 0 0
getivar (click) 170907 128842 10 65 0 0% 0 0 0
keyword_args (click) 171547 127788 11 51 0 0% 0 0 0
respond_to (click) 172827 128601 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.