YJIT Benchmarks

Details for Benchmarks at 2022-03-08 07:13:00

Overall YJIT is 31.4% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 28.5% 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 5 177 75 177 20 177
hexapdf 5 15 20 15
liquid-render 5 156 75 156 20 156
mail 5 124 75 124 20 124
psych-load 5 15 75 15 20 15
railsbench 5 15 75 15 20 15
binarytrees 5 69 75 69 20 69
chunky_png 5 30 75 30 20 30
discourse 5 34 75 34 20 34
erubi 5 47 75 47 20 47
erubi_rails 5 986 75 986 20 986
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 55 75 55 20 55
30k_methods 5 22 29 22 20 22
cfunc_itself 5 440 75 440 20 440
fib 5 320 75 320 20 320
getivar 5 795 75 795 20 795
keyword_args 5 375 75 375 20 375
respond_to 5 102 75 102 20 102
setivar 5 1908 75 1908 20 1908

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) 990289 759497 185 1199 0 0% 0 0 0
hexapdf (click) 1112849 911374 599 8170 613 7% 0 0 320
liquid-render (click) 486865 386487 143 1505 95 6% 0 0 1
mail (click) 875217 656406 324 5297 125 2% 0 0 39
psych-load (click) 330321 260968 59 439 1 0% 0 0 0
railsbench (click) 2533841 1931516 1297 9357 268 2% 0 0 26
binarytrees (click) 150929 115802 11 59 0 0% 0 0 0
chunky_png (click) 364369 284192 85 860 0 0% 0 0 0
discourse (click) 22696721 11396785 3134 285396 261848 91% 2 0 133
erubi (click) 319697 252847 10 79 0 0% 0 0 0
erubi_rails (click) 1901969 1431380 262 1875 18 0% 0 0 3
fannkuchredux (click) 164561 126387 8 189 0 0% 0 0 0
lee (click) 371665 292874 45 587 69 11% 0 0 12
nbody (click) 160081 122890 10 159 0 0% 0 0 0
optcarrot (click) 487377 428608 198 3576 20 0% 0 0 0
rubykon (click) 294865 238190 140 1568 1 0% 0 0 0
30k_ifelse (click) 5539857 4336013 9263 57805 0 0% 0 0 0
30k_methods (click) 2155153 1644588 5782 19362 0 0% 0 0 0
cfunc_itself (click) 149265 114318 8 50 0 0% 0 0 0
fib (click) 147857 113926 8 39 0 0% 0 0 0
getivar (click) 149585 116437 8 66 0 0% 0 0 0
keyword_args (click) 150225 115047 9 52 0 0% 0 0 0
respond_to (click) 151441 115772 8 65 0 0% 0 0 0
setivar (click) 149585 114961 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.