YJIT Benchmarks

Details for Benchmarks at 2022-08-07 20:14:18

Overall YJIT is 36.5% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 35.8% 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 5 195 75 195 20 195
hexapdf 5 15 20 15
liquid-render 5 157 75 157 20 157
mail 5 129 75 129 20 129
psych-load 5 15 75 15 20 15
railsbench 5 15 75 15 20 15
binarytrees 5 65 75 65 20 65
chunky_png 5 30 75 30 20 30
erubi 5 62 75 62 20 62
erubi_rails 5 1041 75 1041 20 1041
fannkuchredux 5 15 75 15 20 15
lee 5 21 75 21 20 21
nbody 5 261 75 261 20 261
optcarrot 5 15 75 15 20 15
rubykon 5 15 37 15 20 15
30k_ifelse 5 56 75 56 20 56
30k_methods 5 22 30 22 20 22
cfunc_itself 5 436 75 436 20 436
fib 5 314 75 314 20 314
getivar 5 612 75 612 20 612
keyword_args 5 381 75 381 20 381
respond_to 5 106 75 106 20 106
setivar 5 957 75 957 20 957
str_concat 5 467 75 467 20 467

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) 1035099 779112 131 1272 0 0% 0 0 0
hexapdf (click) 1152155 925251 683 8028 9 0% 0 0 0
liquid-render (click) 516379 401098 150 1644 2 0% 0 0 0
mail (click) 897947 648474 374 5318 17 0% 0 0 0
psych-load (click) 346651 262713 68 482 1 0% 0 0 0
railsbench (click) 2653211 1965098 1436 10004 16 0% 0 0 0
binarytrees (click) 171931 128248 13 58 0 0% 0 0 0
chunky_png (click) 386459 288857 88 1005 0 0% 0 0 0
erubi (click) 322971 245939 10 79 0 0% 0 0 0
erubi_rails (click) 1958555 1426562 300 1995 4 0% 0 0 0
fannkuchredux (click) 185563 138093 10 188 0 0% 0 0 0
lee (click) 385307 290797 58 632 0 0% 0 0 0
nbody (click) 182683 137556 12 171 0 0% 0 0 0
optcarrot (click) 514075 442723 207 3588 20 0% 0 0 0
rubykon (click) 320667 256574 144 1568 1 0% 0 0 0
30k_ifelse (click) 5560539 4348420 9265 57804 0 0% 0 0 0
30k_methods (click) 2176667 1657507 5784 19361 0 0% 0 0 0
cfunc_itself (click) 170587 127134 10 49 0 0% 0 0 0
fib (click) 169051 126742 10 38 0 0% 0 0 0
getivar (click) 170651 128716 10 65 0 0% 0 0 0
keyword_args (click) 171803 127991 11 51 0 0% 0 0 0
respond_to (click) 172507 128303 10 64 0 0% 0 0 0
setivar (click) 170587 127536 10 38 0 0% 0 0 0
str_concat (click) 170587 127868 12 62 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.