YJIT Benchmarks

Details for Benchmarks at 2021-09-21 19:09:23

Overall YJIT is 22.0% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 18.5% 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 10 121 10 121 10 164
liquid-render 10 96 10 113 10 125
mail 10 118 10 121 10 129
psych-load 10 10 10 10 10 10
railsbench 10 10 10 10 10 10
binarytrees 10 42 10 68 10 56
fannkuchredux 10 10 10 10 10 10
jekyll 10 10 10 10 10 10
lee 10 10 10 13 10 15
nbody 10 172 10 324 10 272
optcarrot 10 10 10 10 10 10
30k_ifelse 10 10 10 10 10 52
30k_methods 10 10 10 10 10 18
cfunc_itself 10 213 10 337 10 483
fib 10 88 10 306 10 339
getivar 10 202 10 211 10 527
respond_to 10 76 10 90 10 113
setivar 10 291 10 265 10 438

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) 1083803 822481 185 1148 0 0% 0 0 0
liquid-render (click) 443029 353709 143 1248 92 7% 0 0 1
mail (click) 947483 720139 337 4877 123 2% 0 0 39
psych-load (click) 174634 136817 56 398 1 0% 0 0 0
railsbench (click) 2475442 1876330 1292 9181 255 2% 0 0 26
binarytrees (click) 108349 82474 9 49 0 0% 0 0 0
fannkuchredux (click) 124413 96099 6 203 0 0% 0 0 0
jekyll (click) 1911707 1547344 335 3603 172 4% 0 0 0
lee (click) 225130 169138 85 1045 111 10% 1 0 13
nbody (click) 117181 89863 8 149 0 0% 0 0 0
optcarrot (click) 644861 575657 286 5570 20 0% 0 0 0
30k_ifelse (click) 5565181 4883403 9261 57795 0 0% 0 0 0
30k_methods (click) 2117885 1808974 5780 19352 0 0% 0 0 0
cfunc_itself (click) 106365 80667 6 40 0 0% 0 0 0
fib (click) 105277 80486 6 29 0 0% 0 0 0
getivar (click) 106621 83081 6 56 0 0% 0 0 0
respond_to (click) 108669 82211 6 55 0 0% 0 0 0
setivar (click) 106493 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.