YJIT Benchmarks

Details for Benchmarks at 2022-03-13 19:12:17

Overall YJIT is 31.0% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 30.5% 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 MJIT warmups MJIT iters YJIT warmups YJIT iters
activerecord 5 183 75 183 20 183
hexapdf 5 15 20 15
liquid-render 5 157 75 157 20 157
mail 5 123 75 123 20 123
psych-load 5 15 75 15 20 15
railsbench 5 15 75 15 20 15
binarytrees 5 63 75 63 20 63
chunky_png 5 30 75 30 20 30
discourse 5 33 75 33 20 33
erubi 5 48 75 48 20 48
erubi_rails 5 997 75 997 20 997
fannkuchredux 5 15 75 15 20 15
lee 5 21 75 21 20 21
nbody 5 283 75 283 20 283
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 5 449 75 449 20 449
fib 5 313 75 313 20 313
getivar 5 774 75 774 20 774
keyword_args 5 377 75 377 20 377
respond_to 5 109 75 109 20 109
setivar 5 1902 75 1902 20 1902

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) 991441 760565 185 1199 0 0% 0 0 0
hexapdf (click) 1114449 913172 599 8168 613 7% 0 0 320
liquid-render (click) 492817 391859 143 1552 95 6% 0 0 1
mail (click) 879441 659422 324 5323 125 2% 0 0 39
psych-load (click) 330641 261508 59 434 1 0% 0 0 0
railsbench (click) 2534353 1932456 1297 9352 268 2% 0 0 26
binarytrees (click) 152273 116983 11 59 0 0% 0 0 0
chunky_png (click) 364305 284003 85 857 0 0% 0 0 0
discourse (click) 22337809 11231073 3094 280122 257018 91% 2 0 133
erubi (click) 321745 254951 10 79 0 0% 0 0 0
erubi_rails (click) 1902929 1432219 262 1876 18 0% 0 0 3
fannkuchredux (click) 166033 127681 8 189 0 0% 0 0 0
lee (click) 372817 294004 45 587 69 11% 0 0 12
nbody (click) 161425 123723 10 159 0 0% 0 0 0
optcarrot (click) 480593 422212 198 3576 20 0% 0 0 0
rubykon (click) 294417 238023 141 1541 1 0% 0 0 0
30k_ifelse (click) 5541329 4337307 9263 57805 0 0% 0 0 0
30k_methods (click) 2156369 1645308 5782 19362 0 0% 0 0 0
cfunc_itself (click) 150673 115587 8 50 0 0% 0 0 0
fib (click) 149009 114646 8 39 0 0% 0 0 0
getivar (click) 151441 117899 8 66 0 0% 0 0 0
keyword_args (click) 151505 115792 9 52 0 0% 0 0 0
respond_to (click) 152593 116492 8 65 0 0% 0 0 0
setivar (click) 151249 116368 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.