YJIT Benchmarks

Details for Benchmarks at 2022-03-07 07:14:31

Overall YJIT is 34.3% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 31.5% 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 5 181 75 181 20 181
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
discourse 5 35 75 35 20 35
erubi 5 47 75 47 20 47
erubi_rails 5 985 75 985 20 985
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 39 15 20 15
30k_ifelse 5 55 75 55 20 55
30k_methods 5 22 29 22 20 22
cfunc_itself 5 435 75 435 20 435
fib 5 318 75 318 20 318
getivar 5 793 75 793 20 793
keyword_args 5 368 75 368 20 368
respond_to 5 102 75 102 20 102
setivar 5 1907 75 1907 20 1907

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) 990161 759457 185 1199 0 0% 0 0 0
hexapdf (click) 1112977 911989 599 8163 615 7% 0 0 320
liquid-render (click) 491985 390085 143 1572 95 6% 0 0 1
mail (click) 895889 671096 324 5508 125 2% 0 0 39
psych-load (click) 329617 260491 59 434 1 0% 0 0 0
railsbench (click) 2534481 1931668 1297 9363 268 2% 0 0 26
binarytrees (click) 142481 107974 11 59 0 0% 0 0 0
discourse (click) 22940817 11472809 3093 289652 266546 92% 2 0 133
erubi (click) 320977 254037 10 79 0 0% 0 0 0
erubi_rails (click) 1908881 1436362 262 1943 18 0% 0 0 3
fannkuchredux (click) 164561 126387 8 189 0 0% 0 0 0
lee (click) 371793 292987 45 587 69 11% 0 0 12
nbody (click) 152273 115504 10 159 0 0% 0 0 0
optcarrot (click) 487441 428633 198 3576 20 0% 0 0 0
rubykon (click) 295697 239365 140 1572 1 0% 0 0 0
30k_ifelse (click) 5539857 4336013 9263 57805 0 0% 0 0 0
30k_methods (click) 2155025 1644475 5782 19362 0 0% 0 0 0
cfunc_itself (click) 149265 114318 8 50 0 0% 0 0 0
fib (click) 139537 106211 8 39 0 0% 0 0 0
getivar (click) 141393 108835 8 66 0 0% 0 0 0
keyword_args (click) 150033 114861 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.