YJIT Benchmarks

Details for Benchmarks at 2022-03-19 19:12:36

Overall YJIT is 33.0% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 31.1% 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 5 158 75 158 20 158
mail 5 122 75 122 20 122
psych-load 5 15 75 15 20 15
railsbench 5 15 75 15 20 15
binarytrees 5 67 75 67 20 67
chunky_png 5 30 75 30 20 30
discourse 5 32 75 32 20 32
erubi 5 48 75 48 20 48
erubi_rails 5 950 75 950 20 950
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 56 75 56 20 56
30k_methods 5 22 29 22 20 22
cfunc_itself 5 446 75 446 20 446
fib 5 320 75 320 20 320
getivar 5 802 75 802 20 802
keyword_args 5 378 75 378 20 378
respond_to 5 101 75 101 20 101
setivar 5 1904 75 1904 20 1904

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) 993681 762775 185 1199 0 0% 0 0 0
hexapdf (click) 1114193 913074 599 8164 613 7% 0 0 320
liquid-render (click) 495825 393496 143 1568 96 6% 0 0 1
mail (click) 896849 672338 325 5509 125 2% 0 0 39
psych-load (click) 330641 261508 59 434 1 0% 0 0 0
railsbench (click) 2533777 1931279 1297 9349 268 2% 0 0 26
binarytrees (click) 152849 117352 11 59 0 0% 0 0 0
chunky_png (click) 365393 285209 85 860 0 0% 0 0 0
discourse (click) 22099729 11160952 3134 275915 252392 91% 2 0 133
erubi (click) 322129 255167 10 79 0 0% 0 0 0
erubi_rails (click) 1911121 1437822 262 1952 18 0% 0 0 3
fannkuchredux (click) 166545 128010 8 189 0 0% 0 0 0
lee (click) 373329 294373 45 587 69 11% 0 0 12
nbody (click) 161553 124184 10 159 0 0% 0 0 0
optcarrot (click) 489361 430095 198 3576 20 0% 0 0 0
rubykon (click) 286161 230386 140 1549 1 0% 0 0 0
30k_ifelse (click) 5541521 4337420 9263 57805 0 0% 0 0 0
30k_methods (click) 2156689 1645882 5782 19362 0 0% 0 0 0
cfunc_itself (click) 150609 115191 8 50 0 0% 0 0 0
fib (click) 149329 115220 8 39 0 0% 0 0 0
getivar (click) 151185 117884 8 66 0 0% 0 0 0
keyword_args (click) 151633 116253 9 52 0 0% 0 0 0
respond_to (click) 152721 116580 8 65 0 0% 0 0 0
setivar (click) 150737 115681 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.