YJIT Benchmarks

Details for Benchmarks at 2022-03-17 19:15:11

Overall YJIT is 32.7% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 31.3% 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 5 179 75 179 20 179
hexapdf 5 15 20 15
liquid-render 5 156 75 156 20 156
mail 5 122 75 122 20 122
psych-load 5 15 75 15 20 15
railsbench 5 15 75 15 20 15
binarytrees 5 67 75 67 20 67
chunky_png 5 30 75 30 20 30
discourse 5 36 75 36 20 36
erubi 5 47 75 47 20 47
erubi_rails 5 987 75 987 20 987
fannkuchredux 5 15 75 15 20 15
lee 5 22 75 22 20 22
nbody 5 284 75 284 20 284
optcarrot 5 15 75 15 20 15
rubykon 5 15 38 15 20 15
30k_ifelse 5 56 75 56 20 56
30k_methods 5 22 29 22 20 22
cfunc_itself 5 436 75 436 20 436
fib 5 320 75 320 20 320
getivar 5 802 75 802 20 802
keyword_args 5 361 75 361 20 361
respond_to 5 103 75 103 20 103
setivar 5 1912 75 1912 20 1912

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) 984977 752906 185 1199 0 0% 0 0 0
hexapdf (click) 1114833 913503 599 8165 615 7% 0 0 320
liquid-render (click) 486865 385472 143 1501 96 6% 0 0 1
mail (click) 878225 658673 325 5312 125 2% 0 0 39
psych-load (click) 326161 256939 59 434 1 0% 0 0 0
railsbench (click) 2531217 1928743 1297 9344 268 2% 0 0 26
binarytrees (click) 152273 116983 11 59 0 0% 0 0 0
chunky_png (click) 365457 285210 85 857 0 0% 0 0 0
discourse (click) 23302033 11640103 3133 295005 271453 92% 2 0 133
erubi (click) 321617 254838 10 79 0 0% 0 0 0
erubi_rails (click) 1912081 1438788 262 1969 18 0% 0 0 3
fannkuchredux (click) 157713 119966 8 189 0 0% 0 0 0
lee (click) 373329 294333 45 587 69 11% 0 0 12
nbody (click) 162065 124513 10 159 0 0% 0 0 0
optcarrot (click) 480465 422099 198 3576 20 0% 0 0 0
rubykon (click) 294033 237569 141 1536 1 0% 0 0 0
30k_ifelse (click) 5541329 4337307 9263 57805 0 0% 0 0 0
30k_methods (click) 2148177 1638054 5782 19362 0 0% 0 0 0
cfunc_itself (click) 142801 108065 8 50 0 0% 0 0 0
fib (click) 141009 107505 8 39 0 0% 0 0 0
getivar (click) 151249 117844 8 66 0 0% 0 0 0
keyword_args (click) 152145 116582 9 52 0 0% 0 0 0
respond_to (click) 153297 117234 8 65 0 0% 0 0 0
setivar (click) 142929 108653 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.