YJIT Benchmarks

Details for Benchmarks at 2022-01-26 22:53:24

Overall YJIT is 32.5% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 29.5% 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 MJIT3.0 warmups MJIT3.0 iters MJIT warmups MJIT iters YJIT warmups YJIT iters
activerecord 5 189 20 189 75 189 20 189
hexapdf 5 15 20 15 20 15
liquid-render 5 180 20 180 75 180 20 180
mail 5 138 20 138 75 138 20 138
psych-load 5 15 20 15 75 15 20 15
railsbench 5 15 20 15 75 15 20 15
binarytrees 5 86 20 86 75 86 20 86
discourse 15 15 15 15 15 15 15 15
erubi 5 54 20 54 75 54 20 54
erubi_rails 5 981 20 981 75 981 20 981
fannkuchredux 5 15 20 15 75 15 20 15
lee 5 26 20 26 75 26 20 26
nbody 5 343 20 343 75 343 20 343
optcarrot 5 15 20 15 75 15 20 15
rubykon 5 15 20 15 42 15 20 15
30k_ifelse 5 63 20 63 75 63 20 63
30k_methods 5 26 20 26 42 26 20 26
cfunc_itself 5 529 20 529 75 529 20 529
fib 5 382 20 382 75 382 20 382
getivar 5 964 20 964 75 964 20 964
keyword_args 5 453 20 453 75 453 20 453
respond_to 5 123 20 123 75 123 20 123
setivar 5 2199 20 2199 75 2199 20 2199

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) 1001617 769471 185 1199 0 0% 0 0 0
hexapdf (click) 1125393 923270 599 8164 615 7% 0 0 321
liquid-render (click) 491921 390979 143 1531 95 6% 0 0 1
mail (click) 913361 685450 324 5521 125 2% 0 0 39
psych-load (click) 339345 269449 59 434 1 0% 0 0 0
railsbench (click) 2540497 1938424 1297 9343 268 2% 0 0 26
binarytrees (click) 151249 115949 11 59 0 0% 0 0 0
discourse (click) 7416849 5333584 3134 42998 19684 45% 2 0 133
erubi (click) 333713 266212 10 79 0 0% 0 0 0
erubi_rails (click) 1916369 1445758 262 1881 18 0% 0 0 3
fannkuchredux (click) 165521 126976 8 189 0 0% 0 0 0
lee (click) 375249 296372 45 587 69 11% 0 0 12
nbody (click) 161041 123479 10 159 0 0% 0 0 0
optcarrot (click) 487953 428535 198 3576 20 0% 0 0 0
rubykon (click) 292369 236118 140 1528 2 0% 0 0 0
30k_ifelse (click) 5540817 4336602 9263 57805 0 0% 0 0 0
30k_methods (click) 2155985 1645064 5782 19362 0 0% 0 0 0
cfunc_itself (click) 149713 114578 8 50 0 0% 0 0 0
fib (click) 148305 114186 8 39 0 0% 0 0 0
getivar (click) 150545 117026 8 66 0 0% 0 0 0
keyword_args (click) 150545 115194 9 52 0 0% 0 0 0
respond_to (click) 152401 116361 8 65 0 0% 0 0 0
setivar (click) 149969 115196 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.