YJIT Benchmarks

Details for Benchmarks at 2022-05-24 19:12:49

Overall YJIT is 33.4% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 26.4% 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 5 191 75 191 20 191
hexapdf 5 15 20 15
liquid-render 5 139 75 139 20 139
mail 5 108 75 108 20 108
psych-load 5 15 75 15 20 15
railsbench 5 15 75 15 20 15
binarytrees 5 63 75 63 20 63
chunky_png 5 30 75 30 20 30
discourse 5 38 75 38 20 38
erubi 5 49 75 49 20 49
erubi_rails 5 795 75 795 20 795
fannkuchredux 5 15 51 15 20 15
lee 5 22 75 22 20 22
nbody 5 275 75 275 20 275
optcarrot 5 15 75 15 20 15
rubykon 5 15 25 15 20 15
30k_ifelse 5 56 75 56 20 56
30k_methods 5 22 29 22 20 22
cfunc_itself 5 446 75 446 20 446
fib 5 320 75 320 20 320
getivar 5 770 75 770 20 770
keyword_args 5 377 75 377 20 377
respond_to 5 106 75 106 20 106
setivar 5 1851 75 1851 20 1851
str_concat 5 197 75 197 20 197

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) 1018011 756233 131 1259 0 0% 0 0 0
hexapdf (click) 1119771 878093 682 7747 10 0% 0 0 0
liquid-render (click) 510299 391348 150 1608 2 0% 0 0 0
mail (click) 886555 641117 374 5287 15 0% 0 0 0
psych-load (click) 337499 253524 68 462 1 0% 0 0 0
railsbench (click) 2636571 1926113 1436 9829 16 0% 0 0 0
binarytrees (click) 173915 130095 13 58 0 0% 0 0 0
chunky_png (click) 376923 281918 88 968 0 0% 0 0 0
discourse (click) 5943323 4408132 3196 25421 84 0% 2 0 0
erubi (click) 317531 241724 10 79 0 0% 0 0 0
erubi_rails (click) 1949979 1403056 300 1999 4 0% 0 0 0
fannkuchredux (click) 187867 140793 10 188 0 0% 0 0 0
lee (click) 377947 283277 58 622 0 0% 0 0 0
nbody (click) 183387 137296 12 158 0 0% 0 0 0
optcarrot (click) 514907 442923 207 3571 20 0% 0 0 0
rubykon (click) 318555 251116 145 1543 1 0% 0 0 0
30k_ifelse (click) 5562971 4350419 9265 57804 0 0% 0 0 0
30k_methods (click) 2178459 1659259 5784 19361 0 0% 0 0 0
cfunc_itself (click) 172443 128724 10 49 0 0% 0 0 0
fib (click) 170843 128332 10 38 0 0% 0 0 0
getivar (click) 172699 130843 10 65 0 0% 0 0 0
keyword_args (click) 173275 129365 11 51 0 0% 0 0 0
respond_to (click) 174491 130178 10 64 0 0% 0 0 0
setivar (click) 172571 129367 10 38 0 0% 0 0 0
str_concat (click) 171291 128826 12 62 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.