YJIT Benchmarks

Details for Benchmarks at 2022-05-28 19:12:53

Overall YJIT is 33.4% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 29.8% 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 MJIT warmups MJIT iters YJIT warmups YJIT iters
activerecord 5 190 75 190 20 190
hexapdf 5 15 20 15
liquid-render 5 139 75 139 20 139
mail 5 105 75 105 20 105
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 29 75 29 20 29
discourse 5 37 75 37 20 37
erubi 5 47 75 47 20 47
erubi_rails 5 792 75 792 20 792
fannkuchredux 5 15 75 15 20 15
lee 5 22 75 22 20 22
nbody 5 274 75 274 20 274
optcarrot 5 15 75 15 20 15
rubykon 5 15 26 15 20 15
30k_ifelse 5 55 75 55 20 55
30k_methods 5 22 29 22 20 22
cfunc_itself 5 448 75 448 20 448
fib 5 319 75 319 20 319
getivar 5 760 75 760 20 760
keyword_args 5 375 75 375 20 375
respond_to 5 104 75 104 20 104
setivar 5 1768 75 1768 20 1768
str_concat 5 198 75 198 20 198

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) 1013595 753674 131 1245 0 0% 0 0 0
hexapdf (click) 1119387 878117 682 7746 10 0% 0 0 0
liquid-render (click) 503451 386203 150 1538 2 0% 0 0 0
mail (click) 933403 673532 374 5755 15 0% 0 0 0
psych-load (click) 339291 254823 68 457 1 0% 0 0 0
railsbench (click) 2640475 1928264 1436 9858 16 0% 0 0 0
binarytrees (click) 174235 130473 13 58 0 0% 0 0 0
chunky_png (click) 379611 283516 88 992 0 0% 0 0 0
discourse (click) 5933787 4402293 3199 25383 84 0% 2 0 0
erubi (click) 316699 240718 10 79 0 0% 0 0 0
erubi_rails (click) 1946715 1400303 300 1972 4 0% 0 0 0
fannkuchredux (click) 187931 140793 10 188 0 0% 0 0 0
lee (click) 378331 283761 58 622 0 0% 0 0 0
nbody (click) 183707 137674 12 158 0 0% 0 0 0
optcarrot (click) 514075 442358 207 3571 20 0% 0 0 0
rubykon (click) 318683 251078 144 1534 1 0% 0 0 0
30k_ifelse (click) 5563291 4350797 9265 57804 0 0% 0 0 0
30k_methods (click) 2178459 1659259 5784 19361 0 0% 0 0 0
cfunc_itself (click) 171099 127863 10 49 0 0% 0 0 0
fib (click) 170075 127767 10 38 0 0% 0 0 0
getivar (click) 173019 131221 10 65 0 0% 0 0 0
keyword_args (click) 173275 129365 11 51 0 0% 0 0 0
respond_to (click) 174555 130178 10 64 0 0% 0 0 0
setivar (click) 172635 129367 10 38 0 0% 0 0 0
str_concat (click) 172955 130065 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.