YJIT Benchmarks

Details for Benchmarks at 2022-01-16 19:12:02

Overall YJIT is 29.3% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 27.3% 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 5 191 20 191 75 191 20 191
hexapdf 5 15 20 15 20 15
liquid-render 5 182 20 182 75 182 20 182
mail 5 145 20 145 75 145 20 145
psych-load 5 15 20 15 75 15 20 15
railsbench 5 15 20 15 75 15 20 15
binarytrees 5 87 20 87 75 87 20 87
erubi 5 57 20 57 75 57 20 57
erubi_rails 5 1045 20 1045 75 1045 20 1045
fannkuchredux 5 15 20 15 75 15 20 15
lee 5 26 20 26 75 26 20 26
nbody 5 344 20 344 75 344 20 344
optcarrot 5 15 20 15 75 15 20 15
rubykon 5 15 20 15 45 15 20 15
30k_ifelse 5 62 20 62 75 62 20 62
30k_methods 5 27 20 27 41 27 20 27
cfunc_itself 5 507 20 507 75 507 20 507
fib 5 384 20 384 75 384 20 384
getivar 5 963 20 963 75 963 20 963
keyword_args 5 451 20 451 75 451 20 451
respond_to 5 126 20 126 75 126 20 126
setivar 5 2217 20 2217 75 2217 20 2217

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) 966097 740339 185 1195 0 0% 0 0 0
hexapdf (click) 1095569 897567 599 8174 614 7% 0 0 321
liquid-render (click) 479569 381219 143 1572 96 6% 0 0 1
mail (click) 858705 642757 324 5329 124 2% 0 0 39
psych-load (click) 296401 234063 58 434 1 0% 0 0 0
railsbench (click) 2508817 1911567 1297 9319 268 2% 0 0 26
binarytrees (click) 112465 86374 10 54 0 0% 0 0 0
erubi (click) 294673 234301 9 73 0 0% 0 0 0
erubi_rails (click) 1885073 1419739 261 1869 18 0% 0 0 3
fannkuchredux (click) 126225 97072 7 184 0 0% 0 0 0
lee (click) 336977 265264 45 586 72 12% 0 0 12
nbody (click) 121745 93575 9 154 0 0% 0 0 0
optcarrot (click) 448977 399205 197 3571 20 0% 0 0 0
rubykon (click) 255761 208868 139 1557 1 0% 0 0 0
30k_ifelse (click) 5501521 4306698 9262 57800 0 0% 0 0 0
30k_methods (click) 2116689 1615160 5781 19357 0 0% 0 0 0
cfunc_itself (click) 110929 85003 7 45 0 0% 0 0 0
fib (click) 109521 84611 7 34 0 0% 0 0 0
getivar (click) 111249 87122 7 61 0 0% 0 0 0
keyword_args (click) 111825 85644 8 47 0 0% 0 0 0
respond_to (click) 113105 86457 7 60 0 0% 0 0 0
setivar (click) 112529 86349 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.