YJIT Benchmarks

Details for Benchmarks at 2021-10-03 19:09:12

Overall YJIT is 24.4% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 18.3% 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 10 123 10 121 10 179
liquid-render 10 104 10 113 10 127
mail 10 123 10 124 10 137
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 10 331 10 267
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 10 219 10 335 10 492
fib 10 88 10 308 10 375
getivar 10 191 10 211 10 527
keyword_args 10 74 10 97 10 73
respond_to 10 76 10 88 10 106
setivar 10 291 10 264 10 491

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) 1085914 839476 185 1168 0 0% 0 0 0
liquid-render (click) 439060 356352 143 1237 92 7% 0 0 1
mail (click) 971738 748275 337 5170 129 2% 0 0 39
psych-load (click) 174954 139230 56 408 1 0% 0 0 0
railsbench (click) 2497201 1931372 1293 9372 255 2% 0 0 26
binarytrees (click) 106685 83176 9 49 0 0% 0 0 0
fannkuchredux (click) 122557 96653 6 203 0 0% 0 0 0
jekyll (click) 1943898 1613930 336 3819 172 4% 0 0 0
lee (click) 223402 169914 85 1043 111 10% 1 0 13
nbody (click) 116477 91152 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) 2110845 1809922 5780 19352 0 0% 0 0 0
cfunc_itself (click) 105149 81615 6 40 0 0% 0 0 0
fib (click) 103421 81040 6 29 0 0% 0 0 0
getivar (click) 105789 84275 6 56 0 0% 0 0 0
keyword_args (click) 102781 80220 7 22 0 0% 0 0 0
respond_to (click) 107709 83405 6 55 0 0% 0 0 0
setivar (click) 105789 82584 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.