YJIT Benchmarks

Details for Benchmarks at 2022-05-07 19:13:00

Overall YJIT is 34.0% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 33.0% 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 5 190 75 190 20 190
hexapdf 5 15 20 15
liquid-render 5 157 75 157 20 157
mail 5 125 75 125 20 125
psych-load 5 15 75 15 20 15
railsbench 5 15 75 15 20 15
binarytrees 5 65 75 65 20 65
chunky_png 5 30 75 30 20 30
discourse 5 41 75 41 20 41
erubi 5 47 75 47 20 47
erubi_rails 5 1004 75 1004 20 1004
fannkuchredux 5 15 74 15 20 15
lee 5 21 75 21 20 21
nbody 5 256 75 256 20 256
optcarrot 5 15 75 15 20 15
rubykon 5 15 28 15 20 15
30k_ifelse 5 55 75 55 20 55
30k_methods 5 22 28 22 20 22
cfunc_itself 5 445 75 445 20 445
fib 5 319 75 319 20 319
getivar 5 764 75 764 20 764
keyword_args 5 377 75 377 20 377
respond_to 5 105 75 105 20 105
setivar 5 1858 75 1858 20 1858
str_concat 5 199 75 199 20 199

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) 1012315 751674 131 1242 0 0% 0 0 0
hexapdf (click) 1113563 872976 682 7692 9 0% 0 0 0
liquid-render (click) 513627 393480 150 1642 2 0% 0 0 0
mail (click) 886107 641422 374 5278 15 0% 0 0 0
psych-load (click) 339419 255149 68 457 1 0% 0 0 0
railsbench (click) 2616923 1911272 1435 9778 16 0% 0 0 0
binarytrees (click) 173211 129880 13 58 0 0% 0 0 0
chunky_png (click) 377307 282138 88 969 0 0% 0 0 0
discourse (click) 5856539 4339683 3162 24969 81 0% 2 0 0
erubi (click) 322267 242503 10 79 0 0% 0 0 0
erubi_rails (click) 1929115 1388241 300 1978 4 0% 0 0 0
fannkuchredux (click) 187227 140578 10 188 0 0% 0 0 0
lee (click) 377627 283337 58 618 0 0% 0 0 0
nbody (click) 182683 137081 12 158 0 0% 0 0 0
optcarrot (click) 513883 442330 207 3571 20 0% 0 0 0
rubykon (click) 318299 251114 144 1536 1 0% 0 0 0
30k_ifelse (click) 5562267 4350204 9265 57804 0 0% 0 0 0
30k_methods (click) 2183835 1661076 5784 19401 0 0% 0 0 0
cfunc_itself (click) 171739 128509 10 49 0 0% 0 0 0
fib (click) 170203 128117 10 38 0 0% 0 0 0
getivar (click) 172187 131006 10 65 0 0% 0 0 0
keyword_args (click) 173083 129479 11 51 0 0% 0 0 0
respond_to (click) 173851 129963 10 64 0 0% 0 0 0
setivar (click) 171931 129152 10 38 0 0% 0 0 0
str_concat (click) 171931 129472 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.