YJIT Benchmarks

Details for Benchmarks at 2022-03-27 07:12:59

Overall YJIT is 32.0% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 31.8% 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 5 158 75 158 20 158
mail 5 122 75 122 20 122
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 5 283 75 283 20 283
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 5 439 75 439 20 439
fib 5 320 75 320 20 320
getivar 5 807 75 807 20 807
keyword_args 5 371 75 371 20 371
respond_to 5 103 75 103 20 103
setivar 5 1829 75 1829 20 1829

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 757753 185 1199 0 0% 0 0 0
hexapdf (click) 1112401 910364 599 8161 613 7% 0 0 320
liquid-render (click) 485009 384093 143 1487 95 6% 0 0 1
mail (click) 844177 635298 324 4992 125 2% 0 0 39
psych-load (click) 329233 259109 59 434 1 0% 0 0 0
railsbench (click) 2530129 1927773 1297 9328 268 2% 0 0 26
binarytrees (click) 152785 117243 11 59 0 0% 0 0 0
chunky_png (click) 364241 282945 85 866 0 0% 0 0 0
discourse (click) 22709969 11405986 3135 285520 261944 91% 2 0 133
erubi (click) 319633 252152 10 79 0 0% 0 0 0
erubi_rails (click) 1905297 1435039 262 1873 18 0% 0 0 3
fannkuchredux (click) 158225 120226 8 189 0 0% 0 0 0
lee (click) 372945 293690 45 587 69 11% 0 0 12
nbody (click) 154257 117058 10 159 0 0% 0 0 0
optcarrot (click) 489809 430403 198 3576 20 0% 0 0 0
rubykon (click) 292817 236183 140 1524 1 0% 0 0 0
30k_ifelse (click) 5541521 4336993 9263 57805 0 0% 0 0 0
30k_methods (click) 2149201 1638643 5782 19362 0 0% 0 0 0
cfunc_itself (click) 143441 108486 8 50 0 0% 0 0 0
fib (click) 141521 107765 8 39 0 0% 0 0 0
getivar (click) 143249 110276 8 66 0 0% 0 0 0
keyword_args (click) 152145 116513 9 52 0 0% 0 0 0
respond_to (click) 145105 109611 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.