YJIT Benchmarks

Details for Benchmarks at 2021-10-05 19:09:25

Overall YJIT is 24.9% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 20.8% 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 10 122 10 121 10 174
liquid-render 10 105 10 113 10 128
mail 10 123 10 125 10 139
psych-load 10 10 10 10 10 10
railsbench 10 10 10 10 10 10
binarytrees 10 42 10 69 10 58
fannkuchredux 10 10 10 10 10 10
hexapdf_line_wrap 10 10 10 10 10 10
jekyll 10 10 10 10 10 10
lee 10 10 10 13 10 16
nbody 10 170 10 331 10 262
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 10 206 10 339 10 492
fib 10 89 10 308 10 375
getivar 10 206 10 210 10 528
keyword_args 10 75 10 97 10 73
respond_to 10 76 10 90 10 111
setivar 10 279 10 264 10 457

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) 1110874 863040 185 1152 0 0% 0 0 0
liquid-render (click) 455380 370610 143 1235 95 7% 0 0 1
mail (click) 970906 749558 337 5022 129 2% 0 0 39
psych-load (click) 184554 148495 56 408 1 0% 0 0 0
railsbench (click) 2559729 1990016 1293 9535 262 2% 0 0 26
binarytrees (click) 112893 89160 9 49 0 0% 0 0 0
fannkuchredux (click) 129533 103179 6 203 0 0% 0 0 0
hexapdf_line_wrap (click) 973953 812430 602 7852 675 8% 0 0 320
jekyll (click) 1952282 1621748 336 3723 174 4% 0 0 0
lee (click) 234218 180023 85 1086 114 10% 1 0 13
nbody (click) 122877 97284 8 149 0 0% 0 0 0
optcarrot (click) 649661 584045 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) 111933 87993 6 40 0 0% 0 0 0
fib (click) 110013 87320 6 29 0 0% 0 0 0
getivar (click) 111741 90161 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) 112189 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.