YJIT Benchmarks

Details for Benchmarks at 2022-03-10 19:12:21

Overall YJIT is 33.4% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 31.7% 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 5 157 75 157 20 157
mail 5 123 75 123 20 123
psych-load 5 15 75 15 20 15
railsbench 5 15 75 15 20 15
binarytrees 5 69 75 69 20 69
chunky_png 5 30 75 30 20 30
discourse 5 35 75 35 20 35
erubi 5 48 75 48 20 48
erubi_rails 5 992 75 992 20 992
fannkuchredux 5 15 75 15 20 15
lee 5 21 75 21 20 21
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 5 449 75 449 20 449
fib 5 318 75 318 20 318
getivar 5 794 75 794 20 794
keyword_args 5 363 75 363 20 363
respond_to 5 100 75 100 20 100
setivar 5 1901 75 1901 20 1901

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) 989265 757618 185 1202 0 0% 0 0 0
hexapdf (click) 1115025 913408 600 8170 613 7% 0 0 320
liquid-render (click) 486609 386649 143 1499 95 6% 0 0 1
mail (click) 859153 644996 324 5115 125 2% 0 0 39
psych-load (click) 330641 261508 59 434 1 0% 0 0 0
railsbench (click) 2538513 1934734 1297 9379 268 2% 0 0 26
binarytrees (click) 152465 117096 11 59 0 0% 0 0 0
chunky_png (click) 365393 285116 85 859 0 0% 0 0 0
discourse (click) 23031313 11542250 3146 290497 266733 91% 2 0 133
erubi (click) 321617 254838 10 79 0 0% 0 0 0
erubi_rails (click) 1906641 1436444 262 1874 18 0% 0 0 3
fannkuchredux (click) 166545 128010 8 189 0 0% 0 0 0
lee (click) 373009 294046 45 587 69 11% 0 0 12
nbody (click) 161681 124297 10 159 0 0% 0 0 0
optcarrot (click) 489297 430143 198 3576 20 0% 0 0 0
rubykon (click) 293137 237267 140 1536 1 0% 0 0 0
30k_ifelse (click) 5541457 4337420 9263 57805 0 0% 0 0 0
30k_methods (click) 2156497 1645769 5782 19362 0 0% 0 0 0
cfunc_itself (click) 150673 115587 8 50 0 0% 0 0 0
fib (click) 149201 115122 8 39 0 0% 0 0 0
getivar (click) 151057 117731 8 66 0 0% 0 0 0
keyword_args (click) 143441 108651 9 52 0 0% 0 0 0
respond_to (click) 144593 109351 8 65 0 0% 0 0 0
setivar (click) 151441 116423 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.