YJIT Benchmarks

Details for Benchmarks at 2022-05-25 19:13:00

Overall YJIT is 30.2% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 25.0% 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 5 192 75 192 20 192
hexapdf 5 15 20 15
liquid-render 5 138 75 138 20 138
mail 5 108 75 108 20 108
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 29 75 29 20 29
discourse 5 38 75 38 20 38
erubi 5 49 75 49 20 49
erubi_rails 5 783 75 783 20 783
fannkuchredux 5 15 75 15 20 15
lee 5 22 75 22 20 22
nbody 5 276 75 276 20 276
optcarrot 5 15 75 15 20 15
rubykon 5 15 26 15 20 15
30k_ifelse 5 55 75 55 20 55
30k_methods 5 22 29 22 20 22
cfunc_itself 5 431 75 431 20 431
fib 5 320 75 320 20 320
getivar 5 756 75 756 20 756
keyword_args 5 375 75 375 20 375
respond_to 5 106 75 106 20 106
setivar 5 1848 75 1848 20 1848
str_concat 5 193 75 193 20 193

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) 1017435 756135 131 1272 0 0% 0 0 0
hexapdf (click) 1116955 876046 683 7750 10 0% 0 0 0
liquid-render (click) 509339 390273 150 1585 2 0% 0 0 0
mail (click) 914139 659937 374 5539 15 0% 0 0 0
psych-load (click) 339739 255152 68 457 1 0% 0 0 0
railsbench (click) 2638043 1926804 1436 9825 16 0% 0 0 0
binarytrees (click) 173915 130095 13 58 0 0% 0 0 0
chunky_png (click) 376923 281683 88 970 0 0% 0 0 0
discourse (click) 5926043 4394918 3187 25324 83 0% 2 0 0
erubi (click) 314267 238713 10 79 0 0% 0 0 0
erubi_rails (click) 1951899 1404464 300 2027 4 0% 0 0 0
fannkuchredux (click) 186907 140310 10 188 0 0% 0 0 0
lee (click) 378331 283680 58 622 0 0% 0 0 0
nbody (click) 183707 137674 12 158 0 0% 0 0 0
optcarrot (click) 513755 441980 207 3571 20 0% 0 0 0
rubykon (click) 318747 251176 144 1535 1 0% 0 0 0
30k_ifelse (click) 5562971 4350419 9265 57804 0 0% 0 0 0
30k_methods (click) 2177115 1658398 5784 19361 0 0% 0 0 0
cfunc_itself (click) 172443 128724 10 49 0 0% 0 0 0
fib (click) 170843 128332 10 38 0 0% 0 0 0
getivar (click) 171355 129982 10 65 0 0% 0 0 0
keyword_args (click) 173275 129365 11 51 0 0% 0 0 0
respond_to (click) 173211 129317 10 64 0 0% 0 0 0
setivar (click) 171291 128506 10 38 0 0% 0 0 0
str_concat (click) 172635 129687 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.