YJIT Benchmarks

Details for Benchmarks at 2022-02-18 19:11:52

Overall YJIT is 32.2% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 29.9% 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 MJIT warmups MJIT iters YJIT warmups YJIT iters
activerecord 5 175 20 175 75 175 20 175
hexapdf 5 15 20 15 20 15
liquid-render 5 153 20 153 75 153 20 153
mail 5 123 20 123 75 123 20 123
psych-load 5 15 20 15 75 15 20 15
railsbench 5 15 20 15 75 15 20 15
binarytrees 5 76 20 76 75 76 20 76
discourse 5 34 20 34 75 34 20 34
erubi 5 48 20 48 75 48 20 48
erubi_rails 5 943 20 943 75 943 20 943
fannkuchredux 5 15 20 15 75 15 20 15
lee 5 21 20 21 75 21 20 21
nbody 5 287 20 287 75 287 20 287
optcarrot 5 15 20 15 75 15 20 15
rubykon 5 15 20 15 38 15 20 15
30k_ifelse 5 56 20 56 75 56 20 56
30k_methods 5 22 20 22 30 22 20 22
cfunc_itself 5 436 20 436 75 436 20 436
fib 5 320 20 320 75 320 20 320
getivar 5 795 20 795 75 795 20 795
keyword_args 5 379 20 379 75 379 20 379
respond_to 5 102 20 102 75 102 20 102
setivar 5 1677 20 1677 75 1677 20 1677

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) 994065 761872 185 1199 0 0% 0 0 0
hexapdf (click) 1118929 916638 600 8176 613 7% 0 0 320
liquid-render (click) 492433 391362 143 1531 96 6% 0 0 1
mail (click) 896593 672593 324 5472 125 2% 0 0 39
psych-load (click) 334481 264570 59 434 1 0% 0 0 0
railsbench (click) 2534417 1932227 1297 9321 268 2% 0 0 26
binarytrees (click) 151249 115993 11 59 0 0% 0 0 0
discourse (click) 22669137 11373990 3106 285100 261799 91% 2 0 133
erubi (click) 325905 258141 10 79 0 0% 0 0 0
erubi_rails (click) 1909841 1438773 262 1878 18 0% 0 0 3
fannkuchredux (click) 165073 126716 8 189 0 0% 0 0 0
lee (click) 377169 297445 45 587 69 11% 0 0 12
nbody (click) 160593 123219 10 159 0 0% 0 0 0
optcarrot (click) 487825 428849 198 3576 20 0% 0 0 0
rubykon (click) 291793 236046 140 1534 1 0% 0 0 0
30k_ifelse (click) 5539857 4336013 9263 57805 0 0% 0 0 0
30k_methods (click) 2155025 1644475 5782 19362 0 0% 0 0 0
cfunc_itself (click) 149265 114318 8 50 0 0% 0 0 0
fib (click) 148369 114255 8 39 0 0% 0 0 0
getivar (click) 149585 116437 8 66 0 0% 0 0 0
keyword_args (click) 150289 115072 9 52 0 0% 0 0 0
respond_to (click) 151953 116101 8 65 0 0% 0 0 0
setivar (click) 149585 114961 8 39 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.