YJIT Benchmarks

Details for Benchmarks at 2022-04-18 19:13:41

Overall YJIT is 33.0% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 28.7% 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 MJIT warmups MJIT iters YJIT warmups YJIT iters
activerecord 5 182 75 182 20 182
hexapdf 5 15 20 15
liquid-render 5 156 75 156 20 156
mail 5 124 75 124 20 124
psych-load 5 15 75 15 20 15
railsbench 5 15 75 15 20 15
binarytrees 5 64 75 64 20 64
chunky_png 5 30 75 30 20 30
discourse 5 35 75 35 20 35
erubi 5 47 75 47 20 47
erubi_rails 5 979 75 979 20 979
fannkuchredux 5 15 75 15 20 15
lee 5 21 75 21 20 21
nbody 5 275 75 275 20 275
optcarrot 5 15 75 15 20 15
rubykon 5 15 27 15 20 15
30k_ifelse 5 56 75 56 20 56
30k_methods 5 22 29 22 20 22
cfunc_itself 5 450 75 450 20 450
fib 5 319 75 319 20 319
getivar 5 779 75 779 20 779
keyword_args 5 377 75 377 20 377
respond_to 5 110 75 110 20 110
setivar 5 1903 75 1903 20 1903

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) 991121 812908 185 1185 0 0% 0 0 0
hexapdf (click) 1099921 922264 599 7895 429 5% 0 0 321
liquid-render (click) 499025 420662 143 1537 92 5% 0 0 5
mail (click) 879953 678743 325 5292 96 1% 0 0 111
psych-load (click) 341841 286772 59 434 1 0% 0 0 0
railsbench (click) 2601809 2106056 1297 9424 224 2% 0 0 26
binarytrees (click) 167889 136564 11 59 0 0% 0 0 0
chunky_png (click) 374993 307770 85 861 0 0% 0 0 0
discourse (click) 6220433 5582977 3101 26663 3102 11% 2 0 140
erubi (click) 328721 275546 10 79 0 0% 0 0 0
erubi_rails (click) 1956881 1594843 262 1889 12 0% 0 0 3
fannkuchredux (click) 182417 147636 8 189 0 0% 0 0 0
lee (click) 378513 315736 45 582 68 11% 0 0 13
nbody (click) 178449 144468 10 159 0 0% 0 0 0
optcarrot (click) 504913 450954 198 3575 20 0% 0 0 0
rubykon (click) 310225 258478 140 1525 1 0% 0 0 0
30k_ifelse (click) 5557649 4358545 9263 57806 0 0% 0 0 0
30k_methods (click) 2171601 1665021 5782 19362 0 0% 0 0 0
cfunc_itself (click) 166865 136752 8 49 0 0% 0 0 0
fib (click) 165969 136689 8 38 0 0% 0 0 0
getivar (click) 166673 137312 8 66 0 0% 0 0 0
keyword_args (click) 168273 137722 9 51 0 0% 0 0 0
respond_to (click) 170321 138909 8 64 0 0% 0 0 0
setivar (click) 167185 137395 8 38 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.