YJIT Benchmarks

Details for Benchmarks at 2022-03-31 07:13:38

Overall YJIT is 32.0% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 29.5% 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 5 182 75 182 20 182
hexapdf 5 15 20 15
liquid-render 5 156 75 156 20 156
mail 5 121 75 121 20 121
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 36 75 36 20 36
erubi 5 46 75 46 20 46
erubi_rails 5 967 75 967 20 967
fannkuchredux 5 15 72 15 20 15
lee 5 21 75 21 20 21
nbody 5 282 75 282 20 282
optcarrot 5 15 75 15 20 15
rubykon 5 15 21 15 20 15
30k_ifelse 5 56 75 56 20 56
30k_methods 5 22 29 22 20 22
cfunc_itself 5 448 75 448 20 448
fib 5 319 75 319 20 319
getivar 5 797 75 797 20 797
keyword_args 5 369 75 369 20 369
respond_to 5 107 75 107 20 107
setivar 5 1810 75 1810 20 1810

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) 988561 758714 185 1199 0 0% 0 0 0
hexapdf (click) 1115025 913335 600 8162 614 7% 0 0 320
liquid-render (click) 488465 387759 143 1505 95 6% 0 0 1
mail (click) 844177 635298 324 4992 125 2% 0 0 39
psych-load (click) 330065 260699 59 434 1 0% 0 0 0
railsbench (click) 2533969 1932875 1297 9303 268 2% 0 0 26
binarytrees (click) 152785 117243 11 59 0 0% 0 0 0
chunky_png (click) 366737 286126 85 865 0 0% 0 0 0
discourse (click) 23304273 11640310 3133 294932 271378 92% 2 0 133
erubi (click) 320657 254112 10 79 0 0% 0 0 0
erubi_rails (click) 1906961 1436313 262 1873 18 0% 0 0 3
fannkuchredux (click) 166545 127941 8 189 0 0% 0 0 0
lee (click) 373841 294593 45 587 69 11% 0 0 12
nbody (click) 162577 124773 10 159 0 0% 0 0 0
optcarrot (click) 489297 430074 198 3576 20 0% 0 0 0
rubykon (click) 294865 238361 140 1541 1 0% 0 0 0
30k_ifelse (click) 5541841 4337567 9263 57805 0 0% 0 0 0
30k_methods (click) 2157521 1646358 5782 19362 0 0% 0 0 0
cfunc_itself (click) 151761 116201 8 50 0 0% 0 0 0
fib (click) 149841 115480 8 39 0 0% 0 0 0
getivar (click) 152081 118320 8 66 0 0% 0 0 0
keyword_args (click) 151825 115939 9 52 0 0% 0 0 0
respond_to (click) 153425 117276 8 65 0 0% 0 0 0
setivar (click) 152081 116844 8 39 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.