YJIT Benchmarks

Details for Benchmarks at 2021-09-30 10:25:48

Overall YJIT is 23.1% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 18.1% 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 MJIT3.0 warmups MJIT3.0 iters YJIT warmups YJIT iters
activerecord 10 122 10 118 10 165
liquid-render 10 96 10 108 10 126
mail 10 118 10 116 10 128
psych-load 10 10 10 10 10 10
railsbench 10 10 10 10 10 10
binarytrees 10 40 10 68 10 57
fannkuchredux 10 10 10 10 10 10
jekyll 10 10 10 10 10 10
lee 10 10 10 13 10 15
nbody 10 169 10 331 10 261
optcarrot 10 10 10 10 10 10
30k_ifelse 10 10 10 10 10 53
30k_methods 10 10 10 10 10 17
cfunc_itself 10 215 10 339 10 473
fib 10 90 10 307 10 375
getivar 10 218 10 212 10 529
keyword_args 10 74 10 98 10 71
respond_to 10 73 10 89 10 110
setivar 10 278 10 265 10 470

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) 1081946 836800 185 1147 0 0% 0 0 0
liquid-render (click) 440596 357607 143 1254 92 7% 0 0 1
mail (click) 971546 747998 337 5164 129 2% 0 0 39
psych-load (click) 174890 139230 56 408 1 0% 0 0 0
railsbench (click) 2497137 1930648 1293 9360 255 2% 0 0 26
binarytrees (click) 107005 83422 9 49 0 0% 0 0 0
fannkuchredux (click) 123069 97047 6 203 0 0% 0 0 0
jekyll (click) 1936730 1608546 336 3768 173 4% 0 0 0
lee (click) 223338 169914 85 1043 111 10% 1 0 13
nbody (click) 116413 91152 8 149 0 0% 0 0 0
optcarrot (click) 642813 577667 286 5575 20 0% 0 0 0
30k_ifelse (click) 5554621 4884351 9261 57795 0 0% 0 0 0
30k_methods (click) 2111165 1810168 5780 19352 0 0% 0 0 0
cfunc_itself (click) 105469 81861 6 40 0 0% 0 0 0
fib (click) 103549 81188 6 29 0 0% 0 0 0
getivar (click) 105149 83881 6 56 0 0% 0 0 0
keyword_args (click) 103293 80614 7 22 0 0% 0 0 0
respond_to (click) 107325 83159 6 55 0 0% 0 0 0
setivar (click) 105149 82190 6 29 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.