YJIT Benchmarks

Details for Benchmarks at 2022-02-02 19:11:32

Overall YJIT is 32.2% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 33.2% 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 5 154 20 154 75 154 20 154
mail 5 124 20 124 75 124 20 124
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 34 20 34 75 34 20 34
erubi 5 48 20 48 75 48 20 48
erubi_rails 5 968 20 968 75 968 20 968
fannkuchredux 5 15 20 15 75 15 20 15
lee 5 22 20 22 75 22 20 22
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 54 20 54 75 54 20 54
30k_methods 5 22 20 22 30 22 20 22
cfunc_itself 5 447 20 447 75 447 20 447
fib 5 320 20 320 75 320 20 320
getivar 5 800 20 800 75 800 20 800
keyword_args 5 374 20 374 75 374 20 374
respond_to 5 104 20 104 75 104 20 104
setivar 5 1780 20 1780 75 1780 20 1780

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) 999953 767121 185 1199 0 0% 0 0 0
hexapdf (click) 1118353 916079 599 8169 613 7% 0 0 321
liquid-render (click) 489425 389304 143 1507 95 6% 0 0 1
mail (click) 884113 662818 324 5328 125 2% 0 0 39
psych-load (click) 337233 267066 59 434 1 0% 0 0 0
railsbench (click) 2536785 1933358 1297 9344 268 2% 0 0 26
binarytrees (click) 151249 115949 11 59 0 0% 0 0 0
discourse (click) 22703441 11402837 3133 285465 261942 91% 2 0 133
erubi (click) 330449 261910 10 79 0 0% 0 0 0
erubi_rails (click) 1918417 1444430 262 1958 18 0% 0 0 3
fannkuchredux (click) 165521 126976 8 189 0 0% 0 0 0
lee (click) 377105 297376 45 587 69 11% 0 0 12
nbody (click) 161041 123479 10 159 0 0% 0 0 0
optcarrot (click) 487761 428780 198 3576 20 0% 0 0 0
rubykon (click) 294033 237454 141 1544 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) 148305 114186 8 39 0 0% 0 0 0
getivar (click) 150033 116697 8 66 0 0% 0 0 0
keyword_args (click) 150609 115219 9 52 0 0% 0 0 0
respond_to (click) 151889 116032 8 65 0 0% 0 0 0
setivar (click) 150033 115221 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.