YJIT Benchmarks

Details for Benchmarks at 2021-10-02 07:09:37

Overall YJIT is 23.8% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 19.9% 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 10 127 10 122 10 174
liquid-render 10 105 10 113 10 127
mail 10 122 10 125 10 136
psych-load 10 10 10 10 10 10
railsbench 10 10 10 10 10 10
binarytrees 10 42 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 10 172 10 331 10 259
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 10 217 10 334 10 492
fib 10 89 10 307 10 375
getivar 10 200 10 211 10 528
keyword_args 10 74 10 97 10 73
respond_to 10 75 10 90 10 104
setivar 10 290 10 260 10 490

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) 1084826 838612 185 1165 0 0% 0 0 0
liquid-render (click) 437524 355361 143 1225 92 7% 0 0 1
mail (click) 954650 734305 337 4986 129 2% 0 0 39
psych-load (click) 175530 139624 56 408 1 0% 0 0 0
railsbench (click) 2488241 1924161 1293 9283 255 2% 0 0 26
binarytrees (click) 106493 83028 9 49 0 0% 0 0 0
fannkuchredux (click) 122557 96653 6 203 0 0% 0 0 0
jekyll (click) 1936410 1606896 336 3734 173 4% 0 0 0
lee (click) 223402 169914 85 1043 111 10% 1 0 13
nbody (click) 115901 90758 8 149 0 0% 0 0 0
optcarrot (click) 643261 577913 286 5575 20 0% 0 0 0
30k_ifelse (click) 5554109 4883957 9261 57795 0 0% 0 0 0
30k_methods (click) 2111229 1810168 5780 19352 0 0% 0 0 0
cfunc_itself (click) 105341 81660 6 40 0 0% 0 0 0
fib (click) 103421 81040 6 29 0 0% 0 0 0
getivar (click) 105213 83881 6 56 0 0% 0 0 0
keyword_args (click) 103357 80614 7 22 0 0% 0 0 0
respond_to (click) 107645 83405 6 55 0 0% 0 0 0
setivar (click) 105405 82338 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.