YJIT Benchmarks

Details for Benchmarks at 2022-03-10 07:12:42

Overall YJIT is 32.3% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 19.5% 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 5 178 75 178 20 178
hexapdf 5 15 20 15
liquid-render 5 156 75 156 20 156
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 32 75 32 20 32
erubi 5 46 75 46 20 46
erubi_rails 5 918 75 918 20 918
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 5 447 75 447 20 447
fib 5 320 75 320 20 320
getivar 5 795 75 795 20 795
keyword_args 5 376 75 376 20 376
respond_to 5 103 75 103 20 103
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) 990033 759344 185 1199 0 0% 0 0 0
hexapdf (click) 1113297 912087 599 8163 615 7% 0 0 320
liquid-render (click) 489361 388697 143 1542 95 6% 0 0 1
mail (click) 878097 658557 324 5325 125 2% 0 0 39
psych-load (click) 329489 260398 59 434 1 0% 0 0 0
railsbench (click) 2536593 1932613 1297 9372 268 2% 0 0 26
binarytrees (click) 142609 108087 11 59 0 0% 0 0 0
chunky_png (click) 364945 284643 85 865 0 0% 0 0 0
discourse (click) 22109969 11168939 3134 276063 252480 91% 2 0 133
erubi (click) 320849 253944 10 79 0 0% 0 0 0
erubi_rails (click) 1903889 1433812 262 1875 18 0% 0 0 3
fannkuchredux (click) 164689 126500 8 189 0 0% 0 0 0
lee (click) 371473 292756 45 587 69 11% 0 0 12
nbody (click) 159761 122316 10 159 0 0% 0 0 0
optcarrot (click) 487313 428520 198 3576 20 0% 0 0 0
rubykon (click) 292561 236415 141 1536 1 0% 0 0 0
30k_ifelse (click) 5531537 4328298 9263 57805 0 0% 0 0 0
30k_methods (click) 2154705 1643901 5782 19362 0 0% 0 0 0
cfunc_itself (click) 149393 114431 8 50 0 0% 0 0 0
fib (click) 147857 113926 8 39 0 0% 0 0 0
getivar (click) 149713 116550 8 66 0 0% 0 0 0
keyword_args (click) 150161 114974 9 52 0 0% 0 0 0
respond_to (click) 151441 115772 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.