YJIT Benchmarks

Details for Benchmarks at 2022-05-06 19:12:52

Overall YJIT is 33.7% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 31.9% 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.

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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 5 158 75 158 20 158
mail 5 124 75 124 20 124
psych-load 5 15 75 15 20 15
railsbench 5 15 75 15 20 15
binarytrees 5 64 75 64 20 64
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 1016 75 1016 20 1016
fannkuchredux 5 15 73 15 20 15
lee 5 22 75 22 20 22
nbody 5 275 75 275 20 275
optcarrot 5 15 75 15 20 15
rubykon 5 15 32 15 20 15
30k_ifelse 5 55 75 55 20 55
30k_methods 5 22 29 22 20 22
cfunc_itself 5 430 75 430 20 430
fib 5 319 75 319 20 319
getivar 5 764 75 764 20 764
keyword_args 5 379 75 379 20 379
respond_to 5 105 75 105 20 105
setivar 5 1852 75 1852 20 1852
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) 1013275 752479 131 1248 0 0% 0 0 0
hexapdf (click) 1112475 871993 682 7678 9 0% 0 0 0
liquid-render (click) 511771 391656 150 1625 2 0% 0 0 0
mail (click) 900187 652146 374 5427 15 0% 0 0 0
psych-load (click) 339163 255006 68 457 1 0% 0 0 0
railsbench (click) 2614107 1908441 1435 9760 16 0% 0 0 0
binarytrees (click) 173211 129880 13 58 0 0% 0 0 0
chunky_png (click) 375963 281122 88 963 0 0% 0 0 0
discourse (click) 5891099 4365686 3199 25262 83 0% 2 0 0
erubi (click) 322011 242385 10 79 0 0% 0 0 0
erubi_rails (click) 1929051 1387748 300 1959 4 0% 0 0 0
fannkuchredux (click) 187227 140578 10 188 0 0% 0 0 0
lee (click) 377627 283362 58 618 0 0% 0 0 0
nbody (click) 182683 137081 12 158 0 0% 0 0 0
optcarrot (click) 513371 442034 207 3571 20 0% 0 0 0
rubykon (click) 317659 250495 144 1529 1 0% 0 0 0
30k_ifelse (click) 5562331 4350204 9265 57804 0 0% 0 0 0
30k_methods (click) 2183835 1661026 5784 19401 0 0% 0 0 0
cfunc_itself (click) 171995 128887 10 49 0 0% 0 0 0
fib (click) 169691 127821 10 38 0 0% 0 0 0
getivar (click) 171483 130332 10 65 0 0% 0 0 0
keyword_args (click) 172571 129150 11 51 0 0% 0 0 0
respond_to (click) 173787 129828 10 64 0 0% 0 0 0
setivar (click) 171931 129152 10 38 0 0% 0 0 0
str_concat (click) 171419 129176 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.