YJIT Benchmarks

Details for Benchmarks at 2022-01-30 19:11:19

Overall YJIT is 31.6% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 31.4% 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 5 153 20 153 75 153 20 153
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 5 355 20 355 75 355 20 355
erubi 5 47 20 47 75 47 20 47
erubi_rails 5 972 20 972 75 972 20 972
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 5 443 20 443 75 443 20 443
fib 5 319 20 319 75 319 20 319
getivar 5 768 20 768 75 768 20 768
keyword_args 5 379 20 379 75 379 20 379
respond_to 5 104 20 104 75 104 20 104
setivar 5 1661 20 1661 75 1661 20 1661

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) 999569 766890 185 1199 0 0% 0 0 0
hexapdf (click) 1119057 916688 599 8169 615 7% 0 0 321
liquid-render (click) 494865 393910 143 1566 95 6% 0 0 1
mail (click) 883729 662627 325 5323 125 2% 0 0 39
psych-load (click) 336721 266737 59 434 1 0% 0 0 0
railsbench (click) 2537809 1934740 1297 9359 268 2% 0 0 26
binarytrees (click) 151761 116278 11 59 0 0% 0 0 0
discourse (click) 17706001 9396745 3092 206492 183391 88% 2 0 133
erubi (click) 329937 261581 10 79 0 0% 0 0 0
erubi_rails (click) 1908689 1437899 262 1876 18 0% 0 0 3
fannkuchredux (click) 165009 126647 8 189 0 0% 0 0 0
lee (click) 377105 297376 45 587 69 11% 0 0 12
nbody (click) 160529 123150 10 159 0 0% 0 0 0
optcarrot (click) 487761 428795 198 3576 20 0% 0 0 0
rubykon (click) 293009 236889 140 1540 2 0% 0 0 0
30k_ifelse (click) 5540817 4336602 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) 148305 114186 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) 152401 116361 8 65 0 0% 0 0 0
setivar (click) 149969 115196 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.