YJIT Benchmarks

Details for Benchmarks at 2022-04-08 19:15:16

Overall YJIT is 31.2% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 30.6% 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 MJIT warmups MJIT iters YJIT warmups YJIT iters
activerecord 5 185 75 185 20 185
hexapdf 5 15 20 15
liquid-render 5 156 75 156 20 156
mail 5 121 75 121 20 121
psych-load 5 15 75 15 20 15
railsbench 5 15 75 15 20 15
binarytrees 5 64 75 64 20 64
chunky_png 5 30 75 30 20 30
discourse 5 35 75 35 20 35
erubi 5 46 75 46 20 46
erubi_rails 5 974 75 974 20 974
fannkuchredux 5 15 74 15 20 15
lee 5 21 75 21 20 21
nbody 5 275 75 275 20 275
optcarrot 5 15 75 15 20 15
rubykon 5 15 28 15 20 15
30k_ifelse 5 56 75 56 20 56
30k_methods 5 22 29 22 20 22
cfunc_itself 5 423 75 423 20 423
fib 5 320 75 320 20 320
getivar 5 770 75 770 20 770
keyword_args 5 370 75 370 20 370
respond_to 5 107 75 107 20 107
setivar 5 1764 75 1764 20 1764

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) 991953 813562 185 1187 0 0% 0 0 0
hexapdf (click) 1099537 923033 600 7898 430 5% 0 0 321
liquid-render (click) 499345 421741 143 1500 92 6% 0 0 5
mail (click) 898193 693245 324 5481 96 1% 0 0 111
psych-load (click) 341841 286772 59 434 1 0% 0 0 0
railsbench (click) 2597713 2103484 1297 9376 224 2% 0 0 26
binarytrees (click) 168657 136938 11 59 0 0% 0 0 0
chunky_png (click) 374801 308800 85 857 0 0% 0 0 0
discourse (click) 6184657 5550755 3088 26429 3118 11% 2 0 140
erubi (click) 329489 276819 10 79 0 0% 0 0 0
erubi_rails (click) 1957777 1597497 262 1874 12 0% 0 0 3
fannkuchredux (click) 183441 149524 8 188 0 0% 0 0 0
lee (click) 378385 315525 45 582 68 11% 0 0 13
nbody (click) 178769 145605 10 159 0 0% 0 0 0
optcarrot (click) 504721 450532 198 3576 20 0% 0 0 0
rubykon (click) 308753 257495 140 1512 1 0% 0 0 0
30k_ifelse (click) 5558929 4359248 9263 57806 0 0% 0 0 0
30k_methods (click) 2171601 1665021 5782 19362 0 0% 0 0 0
cfunc_itself (click) 167953 137033 8 50 0 0% 0 0 0
fib (click) 165713 135175 8 39 0 0% 0 0 0
getivar (click) 166161 136983 8 66 0 0% 0 0 0
keyword_args (click) 167249 135834 9 52 0 0% 0 0 0
respond_to (click) 170641 138816 8 65 0 0% 0 0 0
setivar (click) 166673 135836 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.