YJIT Benchmarks

Details for Benchmarks at 2022-04-16 07:14:00

Overall YJIT is 32.5% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 28.3% 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 5 183 75 183 20 183
hexapdf 5 15 20 15
liquid-render 5 155 75 155 20 155
mail 5 124 75 124 20 124
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
discourse 5 40 75 40 20 40
erubi 5 47 75 47 20 47
erubi_rails 5 987 75 987 20 987
fannkuchredux 5 15 75 15 20 15
lee 5 21 75 21 20 21
nbody 5 268 75 268 20 268
optcarrot 5 15 75 15 20 15
rubykon 5 15 26 15 20 15
30k_ifelse 5 54 75 54 20 54
30k_methods 5 22 29 22 20 22
cfunc_itself 5 438 75 438 20 438
fib 5 320 75 320 20 320
getivar 5 780 75 780 20 780
keyword_args 5 376 75 376 20 376
respond_to 5 109 75 109 20 109
setivar 5 1905 75 1905 20 1905

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) 995025 816377 185 1185 0 0% 0 0 0
hexapdf (click) 1097937 921897 599 7879 427 5% 0 0 321
liquid-render (click) 501521 423041 143 1502 92 6% 0 0 5
mail (click) 901777 695475 324 5518 96 1% 0 0 111
psych-load (click) 340113 284678 59 434 1 0% 0 0 0
railsbench (click) 2592593 2100659 1297 9336 224 2% 0 0 26
binarytrees (click) 169681 138826 11 58 0 0% 0 0 0
chunky_png (click) 376465 309891 85 866 0 0% 0 0 0
discourse (click) 6303057 5654444 3178 27503 3244 11% 2 0 140
erubi (click) 329681 277241 10 79 0 0% 0 0 0
erubi_rails (click) 1956113 1596856 262 1870 12 0% 0 0 3
fannkuchredux (click) 183441 149524 8 188 0 0% 0 0 0
lee (click) 379025 316065 45 582 68 11% 0 0 13
nbody (click) 178193 145653 10 158 0 0% 0 0 0
optcarrot (click) 503889 449066 198 3576 20 0% 0 0 0
rubykon (click) 311633 259628 140 1534 1 0% 0 0 0
30k_ifelse (click) 5557969 4358776 9263 57804 0 0% 0 0 0
30k_methods (click) 2172625 1666909 5782 19361 0 0% 0 0 0
cfunc_itself (click) 167377 137081 8 49 0 0% 0 0 0
fib (click) 165777 136267 8 39 0 0% 0 0 0
getivar (click) 167697 139200 8 65 0 0% 0 0 0
keyword_args (click) 169041 138096 9 51 0 0% 0 0 0
respond_to (click) 170321 138909 8 64 0 0% 0 0 0
setivar (click) 167697 137724 8 38 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.