YJIT Benchmarks

Details for Benchmarks at 2022-08-13 20:13:48

Overall YJIT is 34.8% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 35.4% 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 5 158 75 158 20 158
mail 5 128 75 128 20 128
psych-load 5 15 75 15 20 15
railsbench 5 15 75 15 20 15
binarytrees 5 60 75 60 20 60
chunky_png 5 30 75 30 20 30
erubi 5 62 75 62 20 62
erubi_rails 5 1027 75 1027 20 1027
fannkuchredux 5 15 75 15 20 15
lee 5 20 75 20 20 20
nbody 5 263 75 263 20 263
optcarrot 5 15 75 15 20 15
rubykon 5 15 36 15 20 15
30k_ifelse 5 50 75 50 20 50
30k_methods 5 21 29 21 20 21
cfunc_itself 5 422 75 422 20 422
fib 5 315 75 315 20 315
getivar 5 618 75 618 20 618
keyword_args 5 367 75 367 20 367
respond_to 5 107 75 107 20 107
setivar 5 990 75 990 20 990
str_concat 5 445 75 445 20 445

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) 1035227 778792 131 1281 0 0% 0 0 0
hexapdf (click) 1151579 924912 683 8026 9 0% 0 0 0
liquid-render (click) 519195 403324 150 1671 2 0% 0 0 0
mail (click) 899355 648935 375 5327 17 0% 0 0 0
psych-load (click) 346715 262791 68 482 1 0% 0 0 0
railsbench (click) 2654939 1966404 1436 10013 16 0% 0 0 0
binarytrees (click) 171419 127952 13 58 0 0% 0 0 0
chunky_png (click) 392539 292598 88 1070 0 0% 0 0 0
erubi (click) 322459 245796 10 79 0 0% 0 0 0
erubi_rails (click) 1962715 1429387 300 2041 4 0% 0 0 0
fannkuchredux (click) 185819 138016 10 196 0 0% 0 0 0
lee (click) 384411 290124 58 632 0 0% 0 0 0
nbody (click) 182491 137443 12 171 0 0% 0 0 0
optcarrot (click) 513435 442314 207 3588 20 0% 0 0 0
rubykon (click) 320923 256854 144 1570 1 0% 0 0 0
30k_ifelse (click) 5560923 4348716 9265 57804 0 0% 0 0 0
30k_methods (click) 2176091 1657178 5784 19361 0 0% 0 0 0
cfunc_itself (click) 170395 127021 10 49 0 0% 0 0 0
fib (click) 168859 126629 10 38 0 0% 0 0 0
getivar (click) 170587 128716 10 65 0 0% 0 0 0
keyword_args (click) 171227 127662 11 51 0 0% 0 0 0
respond_to (click) 172507 128475 10 64 0 0% 0 0 0
setivar (click) 170523 127536 10 38 0 0% 0 0 0
str_concat (click) 170523 127868 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.