YJIT Benchmarks

Details for Benchmarks at 2021-09-22 19:09:46

Overall YJIT is 22.1% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 14.2% 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.

Want Raw Graphs and CSV?

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 10 120 10 172
liquid-render 10 98 10 108 10 122
mail 10 120 10 120 10 131
psych-load 10 10 10 10 10 10
railsbench 10 10 10 10 10 10
binarytrees 10 43 10 69 10 57
fannkuchredux 10 10 10 10 10 10
jekyll 10 10 10 10 10 10
lee 10 10 10 13 10 15
nbody 10 167 10 320 10 272
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 10 334 10 483
fib 10 89 10 308 10 339
getivar 10 205 10 211 10 527
respond_to 10 79 10 90 10 114
setivar 10 295 10 265 10 441

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) 1091291 828651 185 1166 0 0% 0 0 0
liquid-render (click) 440853 351887 143 1225 92 7% 0 0 1
mail (click) 972635 740151 337 5128 125 2% 0 0 39
psych-load (click) 176746 138211 56 408 1 0% 0 0 0
railsbench (click) 2505970 1901670 1293 9345 255 2% 0 0 26
binarytrees (click) 107773 82133 9 49 0 0% 0 0 0
fannkuchredux (click) 123837 95758 6 203 0 0% 0 0 0
jekyll (click) 1946587 1578315 336 3717 173 4% 0 0 0
lee (click) 225066 169138 85 1045 111 10% 1 0 13
nbody (click) 117373 89958 8 149 0 0% 0 0 0
optcarrot (click) 644285 575316 286 5570 20 0% 0 0 0
30k_ifelse (click) 5564541 4883092 9261 57795 0 0% 0 0 0
30k_methods (click) 2117757 1808879 5780 19352 0 0% 0 0 0
cfunc_itself (click) 106813 80913 6 40 0 0% 0 0 0
fib (click) 105213 80486 6 29 0 0% 0 0 0
getivar (click) 107069 83327 6 56 0 0% 0 0 0
respond_to (click) 109053 82457 6 55 0 0% 0 0 0
setivar (click) 106621 81390 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.