YJIT Benchmarks

Details for Benchmarks at 2022-03-18 19:12:28

Overall YJIT is 33.1% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 28.4% 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 5 184 75 184 20 184
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 68 75 68 20 68
chunky_png 5 30 75 30 20 30
discourse 5 34 75 34 20 34
erubi 5 48 75 48 20 48
erubi_rails 5 972 75 972 20 972
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 54 75 54 20 54
30k_methods 5 22 29 22 20 22
cfunc_itself 5 445 75 445 20 445
fib 5 320 75 320 20 320
getivar 5 797 75 797 20 797
keyword_args 5 379 75 379 20 379
respond_to 5 101 75 101 20 101
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) 991185 760514 185 1199 0 0% 0 0 0
hexapdf (click) 1115473 913842 599 8171 613 7% 0 0 320
liquid-render (click) 489553 388706 143 1519 95 6% 0 0 1
mail (click) 894993 671152 324 5484 125 2% 0 0 39
psych-load (click) 330641 261548 59 434 1 0% 0 0 0
railsbench (click) 2529041 1928073 1297 9303 268 2% 0 0 26
binarytrees (click) 152849 117312 11 59 0 0% 0 0 0
chunky_png (click) 366673 286082 85 865 0 0% 0 0 0
discourse (click) 22711889 11408095 3134 285552 261948 91% 2 0 133
erubi (click) 321617 254838 10 79 0 0% 0 0 0
erubi_rails (click) 1907985 1437476 262 1904 18 0% 0 0 3
fannkuchredux (click) 166033 127721 8 189 0 0% 0 0 0
lee (click) 372817 294004 45 587 69 11% 0 0 12
nbody (click) 162129 124465 10 159 0 0% 0 0 0
optcarrot (click) 489361 430143 198 3576 20 0% 0 0 0
rubykon (click) 287697 232431 140 1570 2 0% 0 0 0
30k_ifelse (click) 5541009 4336733 9263 57805 0 0% 0 0 0
30k_methods (click) 2156497 1645769 5782 19362 0 0% 0 0 0
cfunc_itself (click) 150737 115612 8 50 0 0% 0 0 0
fib (click) 149521 115333 8 39 0 0% 0 0 0
getivar (click) 151057 117731 8 66 0 0% 0 0 0
keyword_args (click) 151633 116253 9 52 0 0% 0 0 0
respond_to (click) 144593 109351 8 65 0 0% 0 0 0
setivar (click) 151057 116255 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.