YJIT Benchmarks

Details for Benchmarks at 2022-01-30 07:11:45

Overall YJIT is 31.9% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 33.4% 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 MJIT3.0 warmups MJIT3.0 iters MJIT warmups MJIT iters YJIT warmups YJIT iters
activerecord 5 177 20 177 75 177 20 177
hexapdf 5 15 20 15 20 15
liquid-render 5 155 20 155 75 155 20 155
mail 5 122 20 122 75 122 20 122
psych-load 5 15 20 15 75 15 20 15
railsbench 5 15 20 15 75 15 20 15
binarytrees 5 75 20 75 75 75 20 75
discourse 5 352 20 352 75 352 20 352
erubi 5 47 20 47 75 47 20 47
erubi_rails 5 937 20 937 75 937 20 937
fannkuchredux 5 15 20 15 75 15 20 15
lee 5 21 20 21 75 21 20 21
nbody 5 287 20 287 75 287 20 287
optcarrot 5 15 20 15 75 15 20 15
rubykon 5 15 20 15 38 15 20 15
30k_ifelse 5 56 20 56 75 56 20 56
30k_methods 5 22 20 22 31 22 20 22
cfunc_itself 5 448 20 448 75 448 20 448
fib 5 319 20 319 75 319 20 319
getivar 5 770 20 770 75 770 20 770
keyword_args 5 379 20 379 75 379 20 379
respond_to 5 105 20 105 75 105 20 105
setivar 5 1663 20 1663 75 1663 20 1663

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) 999249 766692 185 1199 0 0% 0 0 0
hexapdf (click) 1118353 916249 599 8170 613 7% 0 0 321
liquid-render (click) 492369 392097 143 1522 96 6% 0 0 1
mail (click) 882769 662064 325 5322 125 2% 0 0 39
psych-load (click) 336721 266737 59 434 1 0% 0 0 0
railsbench (click) 2536273 1934927 1297 9321 268 2% 0 0 26
binarytrees (click) 151761 116278 11 59 0 0% 0 0 0
discourse (click) 17673617 9406903 3134 205647 182157 88% 2 0 133
erubi (click) 329873 261556 10 79 0 0% 0 0 0
erubi_rails (click) 1911313 1439730 262 1902 18 0% 0 0 3
fannkuchredux (click) 165009 126647 8 189 0 0% 0 0 0
lee (click) 377617 297705 45 587 69 11% 0 0 12
nbody (click) 160529 123150 10 159 0 0% 0 0 0
optcarrot (click) 488145 429011 198 3576 20 0% 0 0 0
rubykon (click) 296977 240481 140 1593 1 0% 0 0 0
30k_ifelse (click) 5540305 4336273 9263 57805 0 0% 0 0 0
30k_methods (click) 2155473 1644735 5782 19362 0 0% 0 0 0
cfunc_itself (click) 149713 114578 8 50 0 0% 0 0 0
fib (click) 148817 114515 8 39 0 0% 0 0 0
getivar (click) 150033 116697 8 66 0 0% 0 0 0
keyword_args (click) 151121 115548 9 52 0 0% 0 0 0
respond_to (click) 151889 116032 8 65 0 0% 0 0 0
setivar (click) 150545 115550 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.