YJIT Benchmarks

Details for Benchmarks at 2022-03-27 19:12:36

Overall YJIT is 31.2% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 32.7% 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 5 180 75 180 20 180
hexapdf 5 15 20 15
liquid-render 5 154 75 154 20 154
mail 5 123 75 123 20 123
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 34 75 34 20 34
erubi 5 48 75 48 20 48
erubi_rails 5 971 75 971 20 971
fannkuchredux 5 15 74 15 20 15
lee 5 22 75 22 20 22
nbody 5 283 75 283 20 283
optcarrot 5 15 75 15 20 15
rubykon 5 15 23 15 20 15
30k_ifelse 5 55 75 55 20 55
30k_methods 5 22 29 22 20 22
cfunc_itself 5 445 75 445 20 445
fib 5 313 75 313 20 313
getivar 5 807 75 807 20 807
keyword_args 5 378 75 378 20 378
respond_to 5 103 75 103 20 103
setivar 5 1829 75 1829 20 1829

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) 986897 756879 185 1199 0 0% 0 0 0
hexapdf (click) 1114065 912203 599 8162 613 7% 0 0 320
liquid-render (click) 488145 387290 143 1505 95 6% 0 0 1
mail (click) 878993 658560 324 5324 125 2% 0 0 39
psych-load (click) 330513 260890 59 434 1 0% 0 0 0
railsbench (click) 2530065 1927730 1297 9313 268 2% 0 0 26
binarytrees (click) 152785 117243 11 59 0 0% 0 0 0
chunky_png (click) 365329 284658 85 860 0 0% 0 0 0
discourse (click) 22726609 11419855 3147 285697 261949 91% 2 0 133
erubi (click) 322129 255098 10 79 0 0% 0 0 0
erubi_rails (click) 1903953 1432747 262 1893 18 0% 0 0 3
fannkuchredux (click) 166737 127696 8 189 0 0% 0 0 0
lee (click) 373329 294264 45 587 69 11% 0 0 12
nbody (click) 162193 124101 10 159 0 0% 0 0 0
optcarrot (click) 488977 429500 198 3576 20 0% 0 0 0
rubykon (click) 293521 236829 140 1533 1 0% 0 0 0
30k_ifelse (click) 5542033 4337322 9263 57805 0 0% 0 0 0
30k_methods (click) 2157009 1646029 5782 19362 0 0% 0 0 0
cfunc_itself (click) 150929 115298 8 50 0 0% 0 0 0
fib (click) 149841 115480 8 39 0 0% 0 0 0
getivar (click) 143249 110276 8 66 0 0% 0 0 0
keyword_args (click) 152337 116268 9 52 0 0% 0 0 0
respond_to (click) 153425 117326 8 65 0 0% 0 0 0
setivar (click) 151761 116270 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.