YJIT Benchmarks

Details for Benchmarks at 2022-03-08 19:12:23

Overall YJIT is 31.7% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 28.1% 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 5 176 75 176 20 176
hexapdf 5 15 20 15
liquid-render 5 157 75 157 20 157
mail 5 124 75 124 20 124
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 29 75 29 20 29
discourse 5 35 75 35 20 35
erubi 5 47 75 47 20 47
erubi_rails 5 925 75 925 20 925
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 56 75 56 20 56
30k_methods 5 22 29 22 20 22
cfunc_itself 5 444 75 444 20 444
fib 5 320 75 320 20 320
getivar 5 794 75 794 20 794
keyword_args 5 370 75 370 20 370
respond_to 5 101 75 101 20 101
setivar 5 1907 75 1907 20 1907

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) 990033 759344 185 1199 0 0% 0 0 0
hexapdf (click) 1114001 912613 599 8172 613 7% 0 0 320
liquid-render (click) 488273 387647 143 1512 95 6% 0 0 1
mail (click) 876817 657341 324 5311 125 2% 0 0 39
psych-load (click) 330193 260855 59 439 1 0% 0 0 0
railsbench (click) 2533649 1931099 1297 9345 268 2% 0 0 26
binarytrees (click) 150929 115802 11 59 0 0% 0 0 0
chunky_png (click) 364945 284576 85 864 0 0% 0 0 0
discourse (click) 22946833 11477032 3094 289692 266535 92% 2 0 133
erubi (click) 320593 253821 10 79 0 0% 0 0 0
erubi_rails (click) 1904529 1434559 262 1875 18 0% 0 0 3
fannkuchredux (click) 164561 126387 8 189 0 0% 0 0 0
lee (click) 371793 292987 45 587 69 11% 0 0 12
nbody (click) 160209 123003 10 159 0 0% 0 0 0
optcarrot (click) 487313 428520 198 3576 20 0% 0 0 0
rubykon (click) 292241 236443 140 1541 1 0% 0 0 0
30k_ifelse (click) 5539985 4336126 9263 57805 0 0% 0 0 0
30k_methods (click) 2155025 1644475 5782 19362 0 0% 0 0 0
cfunc_itself (click) 149265 114318 8 50 0 0% 0 0 0
fib (click) 147857 113926 8 39 0 0% 0 0 0
getivar (click) 149585 116437 8 66 0 0% 0 0 0
keyword_args (click) 149969 114498 9 52 0 0% 0 0 0
respond_to (click) 151441 115772 8 65 0 0% 0 0 0
setivar (click) 149585 114961 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.