YJIT Benchmarks

Details for Benchmarks at 2022-03-30 19:13:25

Overall YJIT is 31.5% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 27.6% 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 5 158 75 158 20 158
mail 5 124 75 124 20 124
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 35 75 35 20 35
erubi 5 47 75 47 20 47
erubi_rails 5 980 75 980 20 980
fannkuchredux 5 15 74 15 20 15
lee 5 22 75 22 20 22
nbody 5 282 75 282 20 282
optcarrot 5 15 75 15 20 15
rubykon 5 15 23 15 20 15
30k_ifelse 5 56 75 56 20 56
30k_methods 5 22 29 22 20 22
cfunc_itself 5 445 75 445 20 445
fib 5 320 75 320 20 320
getivar 5 804 75 804 20 804
keyword_args 5 373 75 373 20 373
respond_to 5 103 75 103 20 103
setivar 5 1821 75 1821 20 1821

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) 988241 758411 185 1199 0 0% 0 0 0
hexapdf (click) 1114961 913485 599 8162 615 7% 0 0 320
liquid-render (click) 491345 389887 143 1530 95 6% 0 0 1
mail (click) 844177 635298 324 4992 125 2% 0 0 39
psych-load (click) 331089 261743 59 434 1 0% 0 0 0
railsbench (click) 2535441 1932040 1297 9350 268 2% 0 0 26
binarytrees (click) 145041 109857 11 59 0 0% 0 0 0
chunky_png (click) 365457 285141 85 857 0 0% 0 0 0
discourse (click) 23010321 11525254 3135 290250 266637 91% 2 0 133
erubi (click) 321745 254836 10 79 0 0% 0 0 0
erubi_rails (click) 1905873 1435718 262 1875 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) 162577 124773 10 159 0 0% 0 0 0
optcarrot (click) 489809 430403 198 3576 20 0% 0 0 0
rubykon (click) 294673 238055 140 1542 1 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) 151761 116201 8 50 0 0% 0 0 0
fib (click) 150353 115809 8 39 0 0% 0 0 0
getivar (click) 152081 118320 8 66 0 0% 0 0 0
keyword_args (click) 152145 116513 9 52 0 0% 0 0 0
respond_to (click) 153297 117163 8 65 0 0% 0 0 0
setivar (click) 151569 116515 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.