YJIT Benchmarks

Details for Benchmarks at 2022-03-29 22:55:32

Overall YJIT is 31.5% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 27.4% 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 5 180 75 180 20 180
hexapdf 5 15 20 15
liquid-render 5 153 75 153 20 153
mail 5 123 75 123 20 123
psych-load 5 15 75 15 20 15
railsbench 5 15 75 15 20 15
binarytrees 5 66 75 66 20 66
chunky_png 5 30 75 30 20 30
discourse 5 34 75 34 20 34
erubi 5 47 75 47 20 47
erubi_rails 5 975 75 975 20 975
fannkuchredux 5 15 74 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 22 15 20 15
30k_ifelse 5 55 75 55 20 55
30k_methods 5 22 29 22 20 22
cfunc_itself 5 425 75 425 20 425
fib 5 319 75 319 20 319
getivar 5 794 75 794 20 794
keyword_args 5 376 75 376 20 376
respond_to 5 102 75 102 20 102
setivar 5 1793 75 1793 20 1793

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) 988049 758323 185 1196 0 0% 0 0 0
hexapdf (click) 1112785 910540 600 8164 615 7% 0 0 320
liquid-render (click) 487377 386931 143 1485 96 6% 0 0 1
mail (click) 844305 635295 324 4996 125 2% 0 0 39
psych-load (click) 331665 262097 59 434 1 0% 0 0 0
railsbench (click) 2529809 1927612 1297 9323 268 2% 0 0 26
binarytrees (click) 152913 117356 11 59 0 0% 0 0 0
chunky_png (click) 364305 283199 85 864 0 0% 0 0 0
discourse (click) 22762641 11447753 3186 286040 261967 91% 2 0 133
erubi (click) 320273 252552 10 79 0 0% 0 0 0
erubi_rails (click) 1905361 1433913 262 1896 18 0% 0 0 3
fannkuchredux (click) 166225 127367 8 189 0 0% 0 0 0
lee (click) 373329 294264 45 587 69 11% 0 0 12
nbody (click) 162065 124444 10 159 0 0% 0 0 0
optcarrot (click) 480977 422359 198 3576 20 0% 0 0 0
rubykon (click) 294289 237226 140 1528 2 0% 0 0 0
30k_ifelse (click) 5541841 4337567 9263 57805 0 0% 0 0 0
30k_methods (click) 2157521 1646358 5782 19362 0 0% 0 0 0
cfunc_itself (click) 142929 108157 8 50 0 0% 0 0 0
fib (click) 141521 107765 8 39 0 0% 0 0 0
getivar (click) 151697 118104 8 66 0 0% 0 0 0
keyword_args (click) 151825 115939 9 52 0 0% 0 0 0
respond_to (click) 145105 109611 8 65 0 0% 0 0 0
setivar (click) 143761 109129 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.