YJIT Benchmarks

Details for Benchmarks at 2022-02-20 19:12:18

Overall YJIT is 32.4% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 29.9% 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 5 173 20 173 75 173 20 173
hexapdf 5 15 20 15 20 15
liquid-render 5 149 20 149 75 149 20 149
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 76 20 76 75 76 20 76
discourse 5 34 20 34 75 34 20 34
erubi 5 48 20 48 75 48 20 48
erubi_rails 5 952 20 952 75 952 20 952
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 30 22 20 22
cfunc_itself 5 445 20 445 75 445 20 445
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 5 108 20 108 75 108 20 108
setivar 5 1781 20 1781 75 1781 20 1781

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) 993937 761946 185 1199 0 0% 0 0 0
hexapdf (click) 1119185 916847 600 8175 613 7% 0 0 320
liquid-render (click) 488017 388502 143 1501 95 6% 0 0 1
mail (click) 903249 676835 324 5528 125 2% 0 0 39
psych-load (click) 334673 264835 59 434 1 0% 0 0 0
railsbench (click) 2538321 1935420 1297 9357 268 2% 0 0 26
binarytrees (click) 151121 116067 11 59 0 0% 0 0 0
discourse (click) 22730513 11421420 3148 285663 261908 91% 2 0 133
erubi (click) 325905 258141 10 79 0 0% 0 0 0
erubi_rails (click) 1909649 1438495 262 1873 18 0% 0 0 3
fannkuchredux (click) 164561 126387 8 189 0 0% 0 0 0
lee (click) 377169 297445 45 587 69 11% 0 0 12
nbody (click) 160081 122890 10 159 0 0% 0 0 0
optcarrot (click) 487825 428849 198 3576 20 0% 0 0 0
rubykon (click) 291985 235916 140 1534 1 0% 0 0 0
30k_ifelse (click) 5539985 4336126 9263 57805 0 0% 0 0 0
30k_methods (click) 2155537 1644804 5782 19362 0 0% 0 0 0
cfunc_itself (click) 149265 114318 8 50 0 0% 0 0 0
fib (click) 148369 114255 8 39 0 0% 0 0 0
getivar (click) 150033 116741 8 66 0 0% 0 0 0
keyword_args (click) 150289 115072 9 52 0 0% 0 0 0
respond_to (click) 151569 115885 8 65 0 0% 0 0 0
setivar (click) 150097 115290 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.