YJIT Benchmarks

Details for Benchmarks at 2021-10-01 07:09:41

Overall YJIT is 24.4% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 20.3% 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 10 116 10 174
liquid-render 10 102 10 110 10 122
mail 10 120 10 122 10 134
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 10 173 10 331 10 264
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 10 338 10 489
fib 10 90 10 306 10 375
getivar 10 200 10 211 10 527
keyword_args 10 73 10 98 10 74
respond_to 10 76 10 90 10 101
setivar 10 291 10 265 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) 1083738 838116 185 1154 0 0% 0 0 0
liquid-render (click) 438356 355849 143 1236 92 7% 0 0 1
mail (click) 949722 730637 337 4951 129 2% 0 0 39
psych-load (click) 175018 139230 56 408 1 0% 0 0 0
railsbench (click) 2498353 1932742 1293 9387 255 2% 0 0 26
binarytrees (click) 106621 83176 9 49 0 0% 0 0 0
fannkuchredux (click) 123133 97047 6 203 0 0% 0 0 0
jekyll (click) 1936922 1607951 336 3717 173 4% 0 0 0
lee (click) 223594 170062 85 1040 111 10% 1 0 13
nbody (click) 116285 90951 8 149 0 0% 0 0 0
optcarrot (click) 642685 577519 286 5575 20 0% 0 0 0
30k_ifelse (click) 5554109 4883957 9261 57795 0 0% 0 0 0
30k_methods (click) 2110781 1809922 5780 19352 0 0% 0 0 0
cfunc_itself (click) 105341 81660 6 40 0 0% 0 0 0
fib (click) 103613 81188 6 29 0 0% 0 0 0
getivar (click) 105405 84029 6 56 0 0% 0 0 0
keyword_args (click) 102973 80368 7 22 0 0% 0 0 0
respond_to (click) 107197 83011 6 55 0 0% 0 0 0
setivar (click) 105341 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.