YJIT Benchmarks

Details for Benchmarks at 2022-03-23 19:16:49

Overall YJIT is 31.7% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 28.7% 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 5 184 75 184 20 184
hexapdf 5 15 20 15
liquid-render 5 157 75 157 20 157
mail 5 124 75 124 20 124
psych-load 5 15 75 15 20 15
railsbench 5 15 75 15 20 15
binarytrees 5 66 75 66 20 66
chunky_png 5 30 75 30 20 30
discourse 5 35 75 35 20 35
erubi 5 48 75 48 20 48
erubi_rails 5 981 75 981 20 981
fannkuchredux 5 15 75 15 20 15
lee 5 21 75 21 20 21
nbody 5 283 75 283 20 283
optcarrot 5 15 75 15 20 15
rubykon 5 15 24 15 20 15
30k_ifelse 5 55 75 55 20 55
30k_methods 5 22 29 22 20 22
cfunc_itself 5 432 75 432 20 432
fib 5 320 75 320 20 320
getivar 5 774 75 774 20 774
keyword_args 5 367 75 367 20 367
respond_to 5 105 75 105 20 105
setivar 5 1896 75 1896 20 1896

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) 988177 758476 185 1199 0 0% 0 0 0
hexapdf (click) 1109393 907680 599 8162 615 7% 0 0 320
liquid-render (click) 493521 391703 143 1568 95 6% 0 0 1
mail (click) 843921 635260 324 4990 125 2% 0 0 39
psych-load (click) 331665 262097 59 434 1 0% 0 0 0
railsbench (click) 2537745 1934028 1297 9382 268 2% 0 0 26
binarytrees (click) 152785 117243 11 59 0 0% 0 0 0
chunky_png (click) 367441 286357 85 870 0 0% 0 0 0
discourse (click) 22950033 11477807 3094 289675 266525 92% 2 0 133
erubi (click) 322257 255211 10 79 0 0% 0 0 0
erubi_rails (click) 1906961 1436340 262 1871 18 0% 0 0 3
fannkuchredux (click) 158737 120555 8 189 0 0% 0 0 0
lee (click) 373329 294264 45 587 69 11% 0 0 12
nbody (click) 162193 124557 10 159 0 0% 0 0 0
optcarrot (click) 480977 422359 198 3576 20 0% 0 0 0
rubykon (click) 293521 237013 140 1523 1 0% 0 0 0
30k_ifelse (click) 5542353 4337896 9263 57805 0 0% 0 0 0
30k_methods (click) 2149201 1638643 5782 19362 0 0% 0 0 0
cfunc_itself (click) 151441 115627 8 50 0 0% 0 0 0
fib (click) 141649 107878 8 39 0 0% 0 0 0
getivar (click) 143249 110276 8 66 0 0% 0 0 0
keyword_args (click) 152145 116513 9 52 0 0% 0 0 0
respond_to (click) 153617 117081 8 65 0 0% 0 0 0
setivar (click) 151569 116515 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.