YJIT Benchmarks

Details for Benchmarks at 2021-09-23 07:09:52

Overall YJIT is 25.4% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 21.2% 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 YJIT warmups YJIT iters
activerecord 10 123 10 118 10 177
liquid-render 10 97 10 111 10 127
mail 10 120 10 123 10 133
psych-load 10 10 10 10 10 10
railsbench 10 10 10 10 10 10
binarytrees 10 41 10 69 10 54
fannkuchredux 10 10 10 10 10 10
jekyll 10 10 10 10 10 10
lee 10 10 10 13 10 15
nbody 10 167 10 331 10 273
optcarrot 10 10 10 10 10 10
30k_ifelse 10 10 10 10 10 51
30k_methods 10 10 10 10 10 19
cfunc_itself 10 215 10 338 10 490
fib 10 87 10 307 10 338
getivar 10 205 10 209 10 527
respond_to 10 77 10 90 10 113
setivar 10 295 10 260 10 439

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) 1086939 825814 185 1141 0 0% 0 0 0
liquid-render (click) 439573 350892 143 1209 92 7% 0 0 1
mail (click) 992347 755396 337 5320 125 2% 0 0 39
psych-load (click) 176746 138211 56 408 1 0% 0 0 0
railsbench (click) 2509426 1904172 1293 9371 255 2% 0 0 26
binarytrees (click) 108349 82474 9 49 0 0% 0 0 0
fannkuchredux (click) 124029 95853 6 203 0 0% 0 0 0
jekyll (click) 1944539 1576675 336 3681 173 4% 0 0 0
lee (click) 225706 169479 85 1045 111 10% 1 0 13
nbody (click) 117181 89863 8 149 0 0% 0 0 0
optcarrot (click) 644285 575316 286 5570 20 0% 0 0 0
30k_ifelse (click) 5565245 4883516 9261 57797 0 0% 0 0 0
30k_methods (click) 2117757 1808879 5780 19352 0 0% 0 0 0
cfunc_itself (click) 106749 80913 6 40 0 0% 0 0 0
fib (click) 104701 80145 6 29 0 0% 0 0 0
getivar (click) 106685 83081 6 56 0 0% 0 0 0
respond_to (click) 108669 82211 6 55 0 0% 0 0 0
setivar (click) 107005 81636 6 29 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.