YJIT Benchmarks

Details for Benchmarks at 2022-04-15 19:13:49

Overall YJIT is 32.3% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 29.4% 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 5 181 75 181 20 181
hexapdf 5 15 20 15
liquid-render 5 151 75 151 20 151
mail 5 124 75 124 20 124
psych-load 5 15 75 15 20 15
railsbench 5 15 75 15 20 15
binarytrees 5 63 75 63 20 63
chunky_png 5 30 75 30 20 30
discourse 5 40 75 40 20 40
erubi 5 47 75 47 20 47
erubi_rails 5 982 75 982 20 982
fannkuchredux 5 15 75 15 20 15
lee 5 21 75 21 20 21
nbody 5 275 75 275 20 275
optcarrot 5 15 75 15 20 15
rubykon 5 15 27 15 20 15
30k_ifelse 5 56 75 56 20 56
30k_methods 5 22 29 22 20 22
cfunc_itself 5 445 75 445 20 445
fib 5 320 75 320 20 320
getivar 5 791 75 791 20 791
keyword_args 5 373 75 373 20 373
respond_to 5 108 75 108 20 108
setivar 5 1900 75 1900 20 1900

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) 992017 813540 185 1185 0 0% 0 0 0
hexapdf (click) 1099217 922935 599 7888 429 5% 0 0 321
liquid-render (click) 503057 424336 143 1530 92 6% 0 0 5
mail (click) 846865 657163 324 4977 96 1% 0 0 111
psych-load (click) 341329 286443 59 434 1 0% 0 0 0
railsbench (click) 2598801 2104561 1297 9388 224 2% 0 0 26
binarytrees (click) 169681 138826 11 58 0 0% 0 0 0
chunky_png (click) 375313 309129 85 857 0 0% 0 0 0
discourse (click) 6261329 5621470 3141 27107 3229 11% 2 0 140
erubi (click) 329169 276912 10 79 0 0% 0 0 0
erubi_rails (click) 1959313 1597758 262 1907 12 0% 0 0 3
fannkuchredux (click) 183441 149524 8 188 0 0% 0 0 0
lee (click) 378385 315525 45 582 68 11% 0 0 13
nbody (click) 177809 145437 10 158 0 0% 0 0 0
optcarrot (click) 505425 451283 198 3575 20 0% 0 0 0
rubykon (click) 311441 259279 140 1536 1 0% 0 0 0
30k_ifelse (click) 5557969 4358776 9263 57804 0 0% 0 0 0
30k_methods (click) 2173137 1667238 5782 19361 0 0% 0 0 0
cfunc_itself (click) 167377 137081 8 49 0 0% 0 0 0
fib (click) 165969 136689 8 38 0 0% 0 0 0
getivar (click) 167697 139200 8 65 0 0% 0 0 0
keyword_args (click) 168273 137722 9 51 0 0% 0 0 0
respond_to (click) 169297 137021 8 65 0 0% 0 0 0
setivar (click) 167185 137395 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.