YJIT Benchmarks

Details for Benchmarks at 2022-03-16 07:12:58

Overall YJIT is 32.6% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 30.9% 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 5 183 75 183 20 183
hexapdf 5 15 20 15
liquid-render 5 156 75 156 20 156
mail 5 123 75 123 20 123
psych-load 5 15 75 15 20 15
railsbench 5 15 75 15 20 15
binarytrees 5 67 75 67 20 67
chunky_png 5 30 75 30 20 30
discourse 5 34 75 34 20 34
erubi 5 47 75 47 20 47
erubi_rails 5 979 75 979 20 979
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 5 445 75 445 20 445
fib 5 320 75 320 20 320
getivar 5 798 75 798 20 798
keyword_args 5 371 75 371 20 371
respond_to 5 100 75 100 20 100
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) 991761 760803 185 1199 0 0% 0 0 0
hexapdf (click) 1114065 912896 599 8162 615 7% 0 0 320
liquid-render (click) 484049 385197 143 1465 95 6% 0 0 1
mail (click) 893329 668873 324 5487 125 2% 0 0 39
psych-load (click) 330833 261621 59 434 1 0% 0 0 0
railsbench (click) 2538513 1934787 1297 9387 268 2% 0 0 26
binarytrees (click) 144145 109381 11 59 0 0% 0 0 0
chunky_png (click) 366289 285824 85 865 0 0% 0 0 0
discourse (click) 22653457 11361484 3094 284950 261755 91% 2 0 133
erubi (click) 322449 255431 10 79 0 0% 0 0 0
erubi_rails (click) 1908177 1437218 262 1904 18 0% 0 0 3
fannkuchredux (click) 166545 128010 8 189 0 0% 0 0 0
lee (click) 372689 293694 45 587 69 11% 0 0 12
nbody (click) 161553 124184 10 159 0 0% 0 0 0
optcarrot (click) 488785 429814 198 3576 20 0% 0 0 0
rubykon (click) 293905 237521 141 1537 1 0% 0 0 0
30k_ifelse (click) 5541329 4337307 9263 57805 0 0% 0 0 0
30k_methods (click) 2156497 1645769 5782 19362 0 0% 0 0 0
cfunc_itself (click) 150609 115514 8 50 0 0% 0 0 0
fib (click) 149201 115122 8 39 0 0% 0 0 0
getivar (click) 151057 117731 8 66 0 0% 0 0 0
keyword_args (click) 143313 108538 9 52 0 0% 0 0 0
respond_to (click) 152913 117066 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.