YJIT Benchmarks

Details for Benchmarks at 2021-11-15 07:10:58

Overall YJIT is 29.5% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 19.6% 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 MJIT3.0 warmups MJIT3.0 iters YJIT warmups YJIT iters
activerecord 10 126 10 114 10 177
hexapdf 10 10 10 10 10 10
liquid-render 10 107 10 111 10 162
mail 10 116 10 124 10 131
psych-load 10 10 10 10 10 10
railsbench 10 10 10 10 10 10
binarytrees 10 45 10 76 10 60
fannkuchredux 10 10 10 10 10 10
jekyll 10 10 10 10 10 10
lee 10 10 10 12 10 15
nbody 10 169 10 316 10 262
optcarrot 10 10 10 10 10 10
rubykon 10 10 10 10 10 10
30k_ifelse 10 10 10 10 10 52
30k_methods 10 10 10 10 10 17
cfunc_itself 10 213 10 316 10 508
fib 10 87 10 321 10 375
getivar 10 196 10 207 10 538
keyword_args 10 73 10 97 10 431
respond_to 10 79 10 95 10 120
setivar 10 289 10 284 10 437

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) 969130 678554 184 1170 0 0% 0 0 0
hexapdf (click) 1081898 809097 595 8010 614 7% 0 0 320
liquid-render (click) 466295 340455 143 1423 95 6% 0 0 1
mail (click) 847658 583604 339 5168 124 2% 0 0 39
psych-load (click) 297505 211757 57 435 1 0% 0 0 0
railsbench (click) 2584610 1796967 1295 9665 263 2% 0 0 26
binarytrees (click) 112741 80259 9 48 0 0% 0 0 0
fannkuchredux (click) 128741 92269 6 202 0 0% 0 0 0
jekyll (click) 1885354 1391495 336 3916 179 4% 0 0 0
lee (click) 345194 239820 44 566 70 12% 0 0 12
nbody (click) 122725 87443 8 148 0 0% 0 0 0
optcarrot (click) 451109 380794 196 3566 20 0% 0 0 0
rubykon (click) 254565 196735 138 1524 1 0% 0 0 0
30k_ifelse (click) 5501925 4300583 9261 57794 0 0% 0 0 0
30k_methods (click) 2117605 1609394 5780 19351 0 0% 0 0 0
cfunc_itself (click) 111333 78888 6 39 0 0% 0 0 0
fib (click) 109797 78496 6 28 0 0% 0 0 0
getivar (click) 111525 81007 6 55 0 0% 0 0 0
keyword_args (click) 112165 79529 7 41 0 0% 0 0 0
respond_to (click) 113445 80222 6 54 0 0% 0 0 0
setivar (click) 112037 79880 6 28 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.