YJIT Benchmarks

Details for Benchmarks at 2022-03-28 19:17:20

Overall YJIT is 33.1% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 28.4% 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 5 182 75 182 20 182
hexapdf 5 15 20 15
liquid-render 5 157 75 157 20 157
mail 5 116 75 116 20 116
psych-load 5 15 75 15 20 15
railsbench 5 15 75 15 20 15
binarytrees 5 66 75 66 20 66
chunky_png 5 30 75 30 20 30
discourse 5 36 75 36 20 36
erubi 5 47 75 47 20 47
erubi_rails 5 982 75 982 20 982
fannkuchredux 5 15 74 15 20 15
lee 5 21 75 21 20 21
nbody 5 283 75 283 20 283
optcarrot 5 15 75 15 20 15
rubykon 5 15 23 15 20 15
30k_ifelse 5 56 75 56 20 56
30k_methods 5 22 29 22 20 22
cfunc_itself 5 442 75 442 20 442
fib 5 320 75 320 20 320
getivar 5 807 75 807 20 807
keyword_args 5 378 75 378 20 378
respond_to 5 103 75 103 20 103
setivar 5 1835 75 1835 20 1835

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) 988113 758498 185 1199 0 0% 0 0 0
hexapdf (click) 1114897 913440 599 8161 612 7% 0 0 320
liquid-render (click) 488017 387596 143 1503 95 6% 0 0 1
mail (click) 892241 666824 324 5508 125 2% 0 0 39
psych-load (click) 331153 261768 59 434 1 0% 0 0 0
railsbench (click) 2536465 1933166 1297 9362 268 2% 0 0 26
binarytrees (click) 152785 117243 11 59 0 0% 0 0 0
chunky_png (click) 366929 286181 85 867 0 0% 0 0 0
discourse (click) 23304785 11644602 3133 295020 271468 92% 2 0 133
erubi (click) 322129 255098 10 79 0 0% 0 0 0
erubi_rails (click) 1905297 1435192 262 1870 18 0% 0 0 3
fannkuchredux (click) 166545 127941 8 189 0 0% 0 0 0
lee (click) 373329 294021 45 587 69 11% 0 0 12
nbody (click) 153745 116729 10 159 0 0% 0 0 0
optcarrot (click) 489297 430074 198 3576 20 0% 0 0 0
rubykon (click) 295249 238434 140 1544 1 0% 0 0 0
30k_ifelse (click) 5542225 4337735 9263 57805 0 0% 0 0 0
30k_methods (click) 2157521 1646358 5782 19362 0 0% 0 0 0
cfunc_itself (click) 151249 115872 8 50 0 0% 0 0 0
fib (click) 141521 107765 8 39 0 0% 0 0 0
getivar (click) 151569 117991 8 66 0 0% 0 0 0
keyword_args (click) 152657 116842 9 52 0 0% 0 0 0
respond_to (click) 145105 109611 8 65 0 0% 0 0 0
setivar (click) 152081 116844 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.