YJIT Benchmarks

Details for Benchmarks at 2022-03-09 07:12:44

Overall YJIT is 32.5% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 30.6% 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 MJIT warmups MJIT iters YJIT warmups YJIT iters
activerecord 5 179 75 179 20 179
hexapdf 5 15 20 15
liquid-render 5 155 75 155 20 155
mail 5 123 75 123 20 123
psych-load 5 15 75 15 20 15
railsbench 5 15 75 15 20 15
binarytrees 5 69 75 69 20 69
chunky_png 5 30 75 30 20 30
discourse 5 34 75 34 20 34
erubi 5 47 75 47 20 47
erubi_rails 5 976 75 976 20 976
fannkuchredux 5 15 75 15 20 15
lee 5 22 75 22 20 22
nbody 5 284 75 284 20 284
optcarrot 5 15 75 15 20 15
rubykon 5 15 38 15 20 15
30k_ifelse 5 55 75 55 20 55
30k_methods 5 22 29 22 20 22
cfunc_itself 5 450 75 450 20 450
fib 5 320 75 320 20 320
getivar 5 795 75 795 20 795
keyword_args 5 378 75 378 20 378
respond_to 5 101 75 101 20 101
setivar 5 1908 75 1908 20 1908

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) 992913 761859 185 1198 0 0% 0 0 0
hexapdf (click) 1114705 912968 600 8175 616 7% 0 0 320
liquid-render (click) 489425 388203 143 1532 95 6% 0 0 1
mail (click) 879761 659368 324 5334 125 2% 0 0 39
psych-load (click) 329617 260491 59 434 1 0% 0 0 0
railsbench (click) 2530513 1929064 1297 9332 268 2% 0 0 26
binarytrees (click) 151313 116018 11 59 0 0% 0 0 0
chunky_png (click) 363793 283365 85 859 0 0% 0 0 0
discourse (click) 22697233 11398179 3134 285455 261974 91% 2 0 133
erubi (click) 320593 253821 10 79 0 0% 0 0 0
erubi_rails (click) 1904785 1434496 262 1874 18 0% 0 0 3
fannkuchredux (click) 164689 126500 8 189 0 0% 0 0 0
lee (click) 371793 292987 45 587 69 11% 0 0 12
nbody (click) 160081 122890 10 159 0 0% 0 0 0
optcarrot (click) 487505 428275 198 3576 20 0% 0 0 0
rubykon (click) 284369 228668 140 1535 2 0% 0 0 0
30k_ifelse (click) 5539857 4336013 9263 57805 0 0% 0 0 0
30k_methods (click) 2155153 1644588 5782 19362 0 0% 0 0 0
cfunc_itself (click) 149265 114318 8 50 0 0% 0 0 0
fib (click) 147857 113926 8 39 0 0% 0 0 0
getivar (click) 149457 116339 8 66 0 0% 0 0 0
keyword_args (click) 150289 115072 9 52 0 0% 0 0 0
respond_to (click) 151569 115885 8 65 0 0% 0 0 0
setivar (click) 149585 114961 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.