YJIT Benchmarks

Details for Benchmarks at 2021-09-16 07:10:17

Overall YJIT is 22.2% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 15.9% 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 10 122 10 119 10 166
liquid-render 10 96 10 108 10 124
mail 10 118 10 122 10 126
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 10 173 10 324 10 266
optcarrot 10 10 10 10 10 10
30k_ifelse 10 10 10 10 10 51
30k_methods 10 10 10 10 10 18
cfunc_itself 10 211 10 338 10 468
fib 10 88 10 307 10 340
getivar 10 201 10 211 10 527
respond_to 10 77 10 90 10 114
setivar 10 291 10 263 10 444

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) 1075992 820206 185 1143 0 0% 0 0 0
liquid-render (click) 437266 351109 143 1219 92 7% 0 0 1
mail (click) 919000 704531 337 4696 125 2% 0 0 39
psych-load (click) 173287 136722 56 398 1 0% 0 0 0
railsbench (click) 5175020 3069292 1292 49090 40246 81% 0 0 26
binarytrees (click) 106874 82130 9 47 0 0% 0 0 0
fannkuchredux (click) 123130 95853 6 203 0 0% 0 0 0
jekyll (click) 2341592 1741464 335 9974 6513 65% 0 0 0
lee (click) 222951 168436 85 1042 111 10% 1 0 13
nbody (click) 116538 89958 8 149 0 0% 0 0 0
optcarrot (click) 642426 574948 286 5570 20 0% 0 0 0
30k_ifelse (click) 5527610 4883403 9261 57795 0 0% 0 0 0
30k_methods (click) 2099066 1808879 5780 19352 0 0% 0 0 0
cfunc_itself (click) 105466 80667 6 40 0 0% 0 0 0
fib (click) 104058 80240 6 29 0 0% 0 0 0
getivar (click) 105850 83081 6 56 0 0% 0 0 0
respond_to (click) 107642 82116 6 55 0 0% 0 0 0
setivar (click) 105722 81295 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.