YJIT Benchmarks

Details for Benchmarks at 2022-01-28 19:11:28

Overall YJIT is 32.4% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 29.6% 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 5 178 20 178 75 178 20 178
hexapdf 5 15 20 15 20 15
liquid-render 5 154 20 154 75 154 20 154
mail 5 121 20 121 75 121 20 121
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 5 348 20 348 75 348 20 348
erubi 5 48 20 48 75 48 20 48
erubi_rails 5 971 20 971 75 971 20 971
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 55 20 55 75 55 20 55
30k_methods 5 22 20 22 34 22 20 22
cfunc_itself 5 450 20 450 75 450 20 450
fib 5 320 20 320 75 320 20 320
getivar 5 769 20 769 75 769 20 769
keyword_args 5 379 20 379 75 379 20 379
respond_to 5 105 20 105 75 105 20 105
setivar 5 1668 20 1668 75 1668 20 1668

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) 999505 766840 185 1199 0 0% 0 0 0
hexapdf (click) 1117777 915965 599 8164 615 7% 0 0 321
liquid-render (click) 491089 390527 143 1531 95 6% 0 0 1
mail (click) 900945 675202 324 5511 125 2% 0 0 39
psych-load (click) 337169 267041 59 434 1 0% 0 0 0
railsbench (click) 2534801 1933116 1297 9330 268 2% 0 0 26
binarytrees (click) 151761 116278 11 59 0 0% 0 0 0
discourse (click) 17514897 9325149 3132 203706 180221 88% 2 0 133
erubi (click) 330385 261885 10 79 0 0% 0 0 0
erubi_rails (click) 1917777 1443979 262 1936 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) 161041 123479 10 159 0 0% 0 0 0
optcarrot (click) 487761 428780 198 3576 20 0% 0 0 0
rubykon (click) 292497 236151 140 1529 1 0% 0 0 0
30k_ifelse (click) 5540817 4336602 9263 57805 0 0% 0 0 0
30k_methods (click) 2155985 1645064 5782 19362 0 0% 0 0 0
cfunc_itself (click) 150225 114907 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) 151889 116032 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.