YJIT Benchmarks

Details for Benchmarks at 2022-03-16 19:12:34

Overall YJIT is 32.8% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 29.9% 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 5 184 75 184 20 184
hexapdf 5 15 20 15
liquid-render 5 157 75 157 20 157
mail 5 122 75 122 20 122
psych-load 5 15 75 15 20 15
railsbench 5 15 75 15 20 15
binarytrees 5 68 75 68 20 68
chunky_png 5 30 75 30 20 30
discourse 5 35 75 35 20 35
erubi 5 47 75 47 20 47
erubi_rails 5 997 75 997 20 997
fannkuchredux 5 15 75 15 20 15
lee 5 22 75 22 20 22
nbody 5 282 75 282 20 282
optcarrot 5 15 75 15 20 15
rubykon 5 15 38 15 20 15
30k_ifelse 5 54 75 54 20 54
30k_methods 5 22 29 22 20 22
cfunc_itself 5 447 75 447 20 447
fib 5 320 75 320 20 320
getivar 5 802 75 802 20 802
keyword_args 5 378 75 378 20 378
respond_to 5 102 75 102 20 102
setivar 5 1903 75 1903 20 1903

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) 989201 757815 185 1199 0 0% 0 0 0
hexapdf (click) 1113041 910912 600 8169 613 7% 0 0 320
liquid-render (click) 488977 387038 143 1535 95 6% 0 0 1
mail (click) 891537 667630 325 5474 125 2% 0 0 39
psych-load (click) 328401 258700 59 434 1 0% 0 0 0
railsbench (click) 2532689 1929387 1297 9360 268 2% 0 0 26
binarytrees (click) 144465 109597 11 59 0 0% 0 0 0
chunky_png (click) 365969 285292 85 865 0 0% 0 0 0
discourse (click) 22949073 11477009 3094 289714 266482 91% 2 0 133
erubi (click) 321489 254377 10 79 0 0% 0 0 0
erubi_rails (click) 1905233 1433764 262 1903 18 0% 0 0 3
fannkuchredux (click) 166033 127681 8 189 0 0% 0 0 0
lee (click) 372433 293455 45 587 69 11% 0 0 12
nbody (click) 161233 123610 10 159 0 0% 0 0 0
optcarrot (click) 488465 429240 198 3576 20 0% 0 0 0
rubykon (click) 292945 236473 140 1532 1 0% 0 0 0
30k_ifelse (click) 5541201 4336846 9263 57805 0 0% 0 0 0
30k_methods (click) 2148177 1638054 5782 19362 0 0% 0 0 0
cfunc_itself (click) 150417 115038 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) 152017 116421 9 52 0 0% 0 0 0
respond_to (click) 153297 117234 8 65 0 0% 0 0 0
setivar (click) 150737 115681 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.