YJIT Benchmarks

Details for Benchmarks at 2022-08-12 20:14:50

Overall YJIT is 35.1% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 33.2% 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 5 193 75 193 20 193
hexapdf 5 15 20 15
liquid-render 5 159 75 159 20 159
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 61 75 61 20 61
erubi_rails 5 1023 75 1023 20 1023
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 56 75 56 20 56
30k_methods 5 22 29 22 20 22
cfunc_itself 5 412 75 412 20 412
fib 5 315 75 315 20 315
getivar 5 617 75 617 20 617
keyword_args 5 361 75 361 20 361
respond_to 5 109 75 109 20 109
setivar 5 990 75 990 20 990
str_concat 5 442 75 442 20 442

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) 1034459 778497 131 1278 0 0% 0 0 0
hexapdf (click) 1150555 924143 683 8018 9 0% 0 0 0
liquid-render (click) 521435 405808 150 1700 2 0% 0 0 0
mail (click) 892955 645328 374 5272 17 0% 0 0 0
psych-load (click) 347355 263273 68 482 1 0% 0 0 0
railsbench (click) 2660827 1970139 1436 10052 16 0% 0 0 0
binarytrees (click) 171867 128248 13 58 0 0% 0 0 0
chunky_png (click) 384219 287705 88 987 0 0% 0 0 0
erubi (click) 322523 245796 10 79 0 0% 0 0 0
erubi_rails (click) 1963099 1429817 300 2031 4 0% 0 0 0
fannkuchredux (click) 185371 137720 10 196 0 0% 0 0 0
lee (click) 386139 291590 58 632 0 0% 0 0 0
nbody (click) 182043 137147 12 171 0 0% 0 0 0
optcarrot (click) 513435 442314 207 3588 20 0% 0 0 0
rubykon (click) 322075 257642 144 1581 1 0% 0 0 0
30k_ifelse (click) 5560923 4348716 9265 57804 0 0% 0 0 0
30k_methods (click) 2175643 1656882 5784 19361 0 0% 0 0 0
cfunc_itself (click) 169947 126725 10 49 0 0% 0 0 0
fib (click) 168411 126333 10 38 0 0% 0 0 0
getivar (click) 170139 128420 10 65 0 0% 0 0 0
keyword_args (click) 170779 127366 11 51 0 0% 0 0 0
respond_to (click) 172059 128179 10 64 0 0% 0 0 0
setivar (click) 170075 127240 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.