YJIT Benchmarks

Details for Benchmarks at 2022-03-31 19:13:16

Overall YJIT is 31.0% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 29.8% 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 5 183 75 183 20 183
hexapdf 5 15 20 15
liquid-render 5 155 75 155 20 155
mail 5 122 75 122 20 122
psych-load 5 15 75 15 20 15
railsbench 5 15 75 15 20 15
binarytrees 5 64 75 64 20 64
chunky_png 5 30 75 30 20 30
discourse 5 36 75 36 20 36
erubi 5 47 75 47 20 47
erubi_rails 5 960 75 960 20 960
fannkuchredux 5 15 72 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 20 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 5 796 75 796 20 796
keyword_args 5 371 75 371 20 371
respond_to 5 107 75 107 20 107
setivar 5 1843 75 1843 20 1843

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) 990161 760391 185 1208 0 0% 0 0 0
hexapdf (click) 1114961 913088 599 8164 614 7% 0 0 320
liquid-render (click) 484753 384242 143 1507 95 6% 0 0 1
mail (click) 874257 654521 325 5324 125 2% 0 0 39
psych-load (click) 331089 261743 59 434 1 0% 0 0 0
railsbench (click) 2532689 1931393 1297 9294 268 2% 0 0 26
binarytrees (click) 151697 116231 11 59 0 0% 0 0 0
chunky_png (click) 367377 286473 85 874 0 0% 0 0 0
discourse (click) 23257553 11601440 3094 294530 271274 92% 2 0 133
erubi (click) 320657 254112 10 79 0 0% 0 0 0
erubi_rails (click) 1907025 1436349 262 1893 18 0% 0 0 3
fannkuchredux (click) 167057 128270 8 189 0 0% 0 0 0
lee (click) 373457 294306 45 587 69 11% 0 0 12
nbody (click) 153745 116729 10 159 0 0% 0 0 0
optcarrot (click) 489809 430403 198 3576 20 0% 0 0 0
rubykon (click) 294161 237618 140 1532 2 0% 0 0 0
30k_ifelse (click) 5542033 4337322 9263 57805 0 0% 0 0 0
30k_methods (click) 2157009 1646029 5782 19362 0 0% 0 0 0
cfunc_itself (click) 151761 116201 8 50 0 0% 0 0 0
fib (click) 150097 115235 8 39 0 0% 0 0 0
getivar (click) 143761 110605 8 66 0 0% 0 0 0
keyword_args (click) 144337 109127 9 52 0 0% 0 0 0
respond_to (click) 153617 117081 8 65 0 0% 0 0 0
setivar (click) 151569 116515 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.