YJIT Benchmarks

Details for Benchmarks at 2022-04-07 07:16:00

Overall YJIT is 32.6% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 30.6% 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 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 5 123 75 123 20 123
psych-load 5 15 75 15 20 15
railsbench 5 15 75 15 20 15
binarytrees 5 65 75 65 20 65
chunky_png 5 30 75 30 20 30
discourse 5 37 75 37 20 37
erubi 5 48 75 48 20 48
erubi_rails 5 983 75 983 20 983
fannkuchredux 5 15 75 15 20 15
lee 5 21 75 21 20 21
nbody 5 274 75 274 20 274
optcarrot 5 15 75 15 20 15
rubykon 5 15 28 15 20 15
30k_ifelse 5 55 75 55 20 55
30k_methods 5 22 29 22 20 22
cfunc_itself 5 444 75 444 20 444
fib 5 320 75 320 20 320
getivar 5 774 75 774 20 774
keyword_args 5 379 75 379 20 379
respond_to 5 104 75 104 20 104
setivar 5 1904 75 1904 20 1904

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) 992401 813772 185 1185 0 0% 0 0 0
hexapdf (click) 1099345 922809 600 7898 429 5% 0 0 321
liquid-render (click) 503825 425388 143 1535 92 5% 0 0 5
mail (click) 899537 694179 324 5485 96 1% 0 0 111
psych-load (click) 341329 286443 59 434 1 0% 0 0 0
railsbench (click) 2599505 2105698 1297 9387 224 2% 0 0 26
binarytrees (click) 168529 138236 11 58 0 0% 0 0 0
chunky_png (click) 374801 308800 85 857 0 0% 0 0 0
discourse (click) 6240209 5607425 3127 26896 3245 12% 2 0 140
erubi (click) 329233 276985 10 79 0 0% 0 0 0
erubi_rails (click) 1956177 1596622 262 1870 12 0% 0 0 3
fannkuchredux (click) 183953 149853 8 188 0 0% 0 0 0
lee (click) 378513 315736 45 582 68 11% 0 0 13
nbody (click) 177681 145324 10 158 0 0% 0 0 0
optcarrot (click) 506001 451235 198 3576 20 0% 0 0 0
rubykon (click) 309009 257878 140 1525 1 0% 0 0 0
30k_ifelse (click) 5557649 4358545 9263 57806 0 0% 0 0 0
30k_methods (click) 2172881 1665724 5782 19362 0 0% 0 0 0
cfunc_itself (click) 167953 137033 8 50 0 0% 0 0 0
fib (click) 165457 136360 8 38 0 0% 0 0 0
getivar (click) 167185 138871 8 65 0 0% 0 0 0
keyword_args (click) 166737 135505 9 52 0 0% 0 0 0
respond_to (click) 169041 138206 8 64 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.