YJIT Benchmarks

Details for Benchmarks at 2022-03-22 07:12:53

Overall YJIT is 32.0% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 27.7% 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 5 181 75 181 20 181
hexapdf 5 15 20 15
liquid-render 5 155 75 155 20 155
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 48 75 48 20 48
erubi_rails 5 986 75 986 20 986
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 39 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 5 802 75 802 20 802
keyword_args 5 379 75 379 20 379
respond_to 5 98 75 98 20 98
setivar 5 1888 75 1888 20 1888

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) 993681 762657 185 1199 0 0% 0 0 0
hexapdf (click) 1114705 913395 599 8164 613 7% 0 0 320
liquid-render (click) 488657 387968 143 1493 96 6% 0 0 1
mail (click) 878161 658465 324 5313 125 2% 0 0 39
psych-load (click) 331921 262314 59 439 1 0% 0 0 0
railsbench (click) 2534545 1931067 1297 9376 268 2% 0 0 26
binarytrees (click) 152273 116983 11 59 0 0% 0 0 0
chunky_png (click) 364945 284881 85 857 0 0% 0 0 0
discourse (click) 22709137 11407228 3134 285555 261972 91% 2 0 133
erubi (click) 321617 254838 10 79 0 0% 0 0 0
erubi_rails (click) 1908369 1437263 262 1901 18 0% 0 0 3
fannkuchredux (click) 166353 128059 8 189 0 0% 0 0 0
lee (click) 372817 294004 45 587 69 11% 0 0 12
nbody (click) 161553 124184 10 159 0 0% 0 0 0
optcarrot (click) 488785 429854 198 3576 20 0% 0 0 0
rubykon (click) 290385 233966 140 1592 2 0% 0 0 0
30k_ifelse (click) 5541457 4337460 9263 57805 0 0% 0 0 0
30k_methods (click) 2148305 1638207 5782 19362 0 0% 0 0 0
cfunc_itself (click) 150929 115725 8 50 0 0% 0 0 0
fib (click) 149777 115476 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) 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.