YJIT Benchmarks

Details for Benchmarks at 2022-01-13 19:11:28

Overall YJIT is 30.3% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 28.2% 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.

Want Raw Graphs and CSV?

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 5 187 20 187 75 187 20 187
hexapdf 5 15 20 15 20 15
liquid-render 5 156 20 156 75 156 20 156
mail 5 140 20 140 75 140 20 140
psych-load 5 15 20 15 75 15 20 15
railsbench 5 15 20 15 75 15 20 15
binarytrees 5 85 20 85 75 85 20 85
erubi 5 55 20 55 75 55 20 55
erubi_rails 5 969 20 969 75 969 20 969
fannkuchredux 5 15 20 15 75 15 20 15
lee 5 26 20 26 75 26 20 26
nbody 5 343 20 343 75 343 20 343
optcarrot 5 15 20 15 75 15 20 15
rubykon 5 15 20 15 44 15 20 15
30k_ifelse 5 62 20 62 74 62 20 62
30k_methods 5 27 20 27 43 27 20 27
cfunc_itself 5 517 20 517 75 517 20 517
fib 5 383 20 383 75 383 20 383
getivar 5 899 20 899 75 899 20 899
keyword_args 5 438 20 438 75 438 20 438
respond_to 5 123 20 123 75 123 20 123
setivar 5 1570 20 1570 75 1570 20 1570

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) 966993 741042 185 1195 0 0% 0 0 0
hexapdf (click) 1095697 897791 599 8169 613 7% 0 0 321
liquid-render (click) 477265 379699 143 1544 95 6% 0 0 1
mail (click) 873425 653987 324 5480 124 2% 0 0 39
psych-load (click) 295697 233760 58 428 1 0% 0 0 0
railsbench (click) 2514129 1915033 1297 9365 268 2% 0 0 26
binarytrees (click) 114129 87455 10 54 0 0% 0 0 0
erubi (click) 294737 234515 9 73 0 0% 0 0 0
erubi_rails (click) 1887121 1420968 261 1890 18 0% 0 0 3
fannkuchredux (click) 127889 98153 7 184 0 0% 0 0 0
lee (click) 337041 265478 45 586 72 12% 0 0 12
nbody (click) 123409 94656 9 154 0 0% 0 0 0
optcarrot (click) 450641 400286 197 3571 20 0% 0 0 0
rubykon (click) 258001 210548 139 1565 2 0% 0 0 0
30k_ifelse (click) 5503185 4307779 9262 57800 0 0% 0 0 0
30k_methods (click) 2118353 1616241 5781 19357 0 0% 0 0 0
cfunc_itself (click) 112593 86084 7 45 0 0% 0 0 0
fib (click) 111121 85692 7 34 0 0% 0 0 0
getivar (click) 112849 88203 7 61 0 0% 0 0 0
keyword_args (click) 113489 86725 8 47 0 0% 0 0 0
respond_to (click) 114769 87538 7 60 0 0% 0 0 0
setivar (click) 112913 86727 7 34 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.