YJIT Benchmarks

Details for Benchmarks at 2022-04-09 07:13:51

Overall YJIT is 31.6% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 28.3% 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 5 182 75 182 20 182
hexapdf 5 15 20 15
liquid-render 5 150 75 150 20 150
mail 5 122 75 122 20 122
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 40 75 40 20 40
erubi 5 47 75 47 20 47
erubi_rails 5 976 75 976 20 976
fannkuchredux 5 15 75 15 20 15
lee 5 22 75 22 20 22
nbody 5 275 75 275 20 275
optcarrot 5 15 75 15 20 15
rubykon 5 15 27 15 20 15
30k_ifelse 5 56 75 56 20 56
30k_methods 5 22 29 22 20 22
cfunc_itself 5 451 75 451 20 451
fib 5 319 75 319 20 319
getivar 5 771 75 771 20 771
keyword_args 5 377 75 377 20 377
respond_to 5 105 75 105 20 105
setivar 5 1785 75 1785 20 1785

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) 992657 813596 185 1185 0 0% 0 0 0
hexapdf (click) 1099281 923156 600 7896 429 5% 0 0 321
liquid-render (click) 502737 424225 143 1527 92 6% 0 0 5
mail (click) 878865 677985 324 5324 96 1% 0 0 111
psych-load (click) 341649 286654 59 434 1 0% 0 0 0
railsbench (click) 2603345 2108245 1297 9428 224 2% 0 0 26
binarytrees (click) 168401 138123 11 58 0 0% 0 0 0
chunky_png (click) 374801 308800 85 857 0 0% 0 0 0
discourse (click) 6189521 5563219 3088 26409 3117 11% 2 0 140
erubi (click) 329169 276912 10 79 0 0% 0 0 0
erubi_rails (click) 1955921 1596757 262 1869 12 0% 0 0 3
fannkuchredux (click) 183953 149853 8 188 0 0% 0 0 0
lee (click) 374545 311380 45 582 68 11% 0 0 13
nbody (click) 178961 146027 10 158 0 0% 0 0 0
optcarrot (click) 506193 451657 198 3575 20 0% 0 0 0
rubykon (click) 309265 257751 140 1516 1 0% 0 0 0
30k_ifelse (click) 5557969 4358776 9263 57804 0 0% 0 0 0
30k_methods (click) 2173137 1667238 5782 19361 0 0% 0 0 0
cfunc_itself (click) 166865 136752 8 49 0 0% 0 0 0
fib (click) 165457 136360 8 38 0 0% 0 0 0
getivar (click) 167185 138871 8 65 0 0% 0 0 0
keyword_args (click) 169041 138096 9 51 0 0% 0 0 0
respond_to (click) 170321 138909 8 64 0 0% 0 0 0
setivar (click) 167185 137395 8 38 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.