YJIT Benchmarks

Details for Benchmarks at 2022-01-15 19:12:12

Overall YJIT is 31.1% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 27.6% 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 5 189 20 189 75 189 20 189
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 85 20 85 75 85 20 85
erubi 5 55 20 55 75 55 20 55
erubi_rails 5 1039 20 1039 75 1039 20 1039
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 44 15 20 15
30k_ifelse 5 62 20 62 75 62 20 62
30k_methods 5 26 20 26 41 26 20 26
cfunc_itself 5 525 20 525 75 525 20 525
fib 5 383 20 383 75 383 20 383
getivar 5 979 20 979 75 979 20 979
keyword_args 5 453 20 453 75 453 20 453
respond_to 5 123 20 123 75 123 20 123
setivar 5 2205 20 2205 75 2205 20 2205

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) 967121 740882 185 1198 0 0% 0 0 0
hexapdf (click) 1094865 897154 600 8166 615 7% 0 0 321
liquid-render (click) 474513 377122 143 1535 95 6% 0 0 1
mail (click) 870417 652063 324 5463 124 2% 0 0 39
psych-load (click) 296465 234014 58 445 1 0% 0 0 0
railsbench (click) 2512977 1914102 1297 9361 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) 1886609 1420260 261 1876 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) 253585 206528 139 1527 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) 110033 84940 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) 111249 85646 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.