YJIT Benchmarks

Details for Benchmarks at 2022-03-20 19:12:25

Overall YJIT is 32.5% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 29.7% 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 5 183 75 183 20 183
hexapdf 5 15 20 15
liquid-render 5 156 75 156 20 156
mail 5 122 75 122 20 122
psych-load 5 15 75 15 20 15
railsbench 5 15 75 15 20 15
binarytrees 5 68 75 68 20 68
chunky_png 5 30 75 30 20 30
discourse 5 32 75 32 20 32
erubi 5 48 75 48 20 48
erubi_rails 5 979 75 979 20 979
fannkuchredux 5 15 75 15 20 15
lee 5 22 75 22 20 22
nbody 5 284 75 284 20 284
optcarrot 5 15 75 15 20 15
rubykon 5 15 38 15 20 15
30k_ifelse 5 55 75 55 20 55
30k_methods 5 22 29 22 20 22
cfunc_itself 5 432 75 432 20 432
fib 5 320 75 320 20 320
getivar 5 802 75 802 20 802
keyword_args 5 359 75 359 20 359
respond_to 5 101 75 101 20 101
setivar 5 1909 75 1909 20 1909

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) 991313 760515 185 1199 0 0% 0 0 0
hexapdf (click) 1115089 913553 600 8171 613 7% 0 0 320
liquid-render (click) 487185 386956 143 1498 95 6% 0 0 1
mail (click) 874897 655774 324 5314 125 2% 0 0 39
psych-load (click) 331345 261985 59 439 1 0% 0 0 0
railsbench (click) 2537105 1933567 1297 9372 268 2% 0 0 26
binarytrees (click) 152273 116983 11 59 0 0% 0 0 0
chunky_png (click) 365073 285041 85 858 0 0% 0 0 0
discourse (click) 22097617 11161648 3134 275949 252462 91% 2 0 133
erubi (click) 310353 244286 10 79 0 0% 0 0 0
erubi_rails (click) 1905361 1435230 262 1875 18 0% 0 0 3
fannkuchredux (click) 166033 127681 8 189 0 0% 0 0 0
lee (click) 372945 294157 45 587 69 11% 0 0 12
nbody (click) 161233 123610 10 159 0 0% 0 0 0
optcarrot (click) 488465 429280 198 3576 20 0% 0 0 0
rubykon (click) 298513 241731 140 1592 1 0% 0 0 0
30k_ifelse (click) 5541329 4337307 9263 57805 0 0% 0 0 0
30k_methods (click) 2156497 1645769 5782 19362 0 0% 0 0 0
cfunc_itself (click) 150929 115367 8 50 0 0% 0 0 0
fib (click) 149201 114759 8 39 0 0% 0 0 0
getivar (click) 151569 118060 8 66 0 0% 0 0 0
keyword_args (click) 151313 115679 9 52 0 0% 0 0 0
respond_to (click) 152593 116547 8 65 0 0% 0 0 0
setivar (click) 151057 116255 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.