YJIT Benchmarks

Details for Benchmarks at 2021-10-05 07:09:45

Overall YJIT is 25.6% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 23.3% 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 MJIT3.0 warmups MJIT3.0 iters YJIT warmups YJIT iters
activerecord 10 126 10 121 10 178
liquid-render 10 104 10 114 10 128
mail 10 123 10 126 10 139
psych-load 10 10 10 10 10 10
railsbench 10 10 10 10 10 10
binarytrees 10 43 10 66 10 58
fannkuchredux 10 10 10 10 10 10
jekyll 10 10 10 10 10 10
lee 10 10 10 13 10 16
nbody 10 169 10 332 10 260
optcarrot 10 10 10 10 10 10
30k_ifelse 10 10 10 10 10 53
30k_methods 10 10 10 10 10 17
cfunc_itself 10 220 10 334 10 491
fib 10 85 10 307 10 374
getivar 10 206 10 211 10 528
keyword_args 10 75 10 96 10 73
respond_to 10 76 10 89 10 111
setivar 10 279 10 264 10 458

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) 1110554 862830 185 1157 0 0% 0 0 0
liquid-render (click) 455828 370803 143 1237 95 7% 0 0 1
mail (click) 983898 760417 337 5156 129 2% 0 0 39
psych-load (click) 184490 148495 56 408 1 0% 0 0 0
railsbench (click) 2558193 1988438 1293 9511 262 2% 0 0 26
binarytrees (click) 112893 89160 9 49 0 0% 0 0 0
fannkuchredux (click) 128957 102785 6 203 0 0% 0 0 0
jekyll (click) 1954586 1624735 336 3747 173 4% 0 0 0
lee (click) 234218 179944 85 1083 114 10% 1 0 13
nbody (click) 122301 96890 8 149 0 0% 0 0 0
optcarrot (click) 649085 583651 286 5575 20 0% 0 0 0
30k_ifelse (click) 5561085 4890483 9261 57795 0 0% 0 0 0
30k_methods (click) 2117629 1816300 5780 19352 0 0% 0 0 0
cfunc_itself (click) 111869 87993 6 40 0 0% 0 0 0
fib (click) 110397 87566 6 29 0 0% 0 0 0
getivar (click) 112189 90407 6 56 0 0% 0 0 0
keyword_args (click) 109693 86746 7 22 0 0% 0 0 0
respond_to (click) 113789 89291 6 55 0 0% 0 0 0
setivar (click) 112125 88716 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.