YJIT Benchmarks

Details for Benchmarks at 2022-03-22 19:13:39

Overall YJIT is 31.4% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 29.3% 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 5 182 75 182 20 182
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 68 75 68 20 68
chunky_png 5 29 75 29 20 29
discourse 5 35 75 35 20 35
erubi 5 48 75 48 20 48
erubi_rails 5 971 75 971 20 971
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 38 15 20 15
30k_ifelse 5 55 75 55 20 55
30k_methods 5 22 29 22 20 22
cfunc_itself 5 446 75 446 20 446
fib 5 313 75 313 20 313
getivar 5 802 75 802 20 802
keyword_args 5 379 75 379 20 379
respond_to 5 101 75 101 20 101
setivar 5 1900 75 1900 20 1900

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) 988433 758676 185 1203 0 0% 0 0 0
hexapdf (click) 1114001 912746 599 8162 613 7% 0 0 320
liquid-render (click) 488529 387804 143 1505 95 6% 0 0 1
mail (click) 858577 644207 324 5118 125 2% 0 0 39
psych-load (click) 331153 261768 59 434 1 0% 0 0 0
railsbench (click) 2534993 1932195 1297 9348 268 2% 0 0 26
binarytrees (click) 152465 116669 11 59 0 0% 0 0 0
chunky_png (click) 366993 286182 85 864 0 0% 0 0 0
discourse (click) 22996625 11517880 3134 290201 266691 91% 2 0 133
erubi (click) 321041 253958 10 79 0 0% 0 0 0
erubi_rails (click) 1905553 1433944 262 1899 18 0% 0 0 3
fannkuchredux (click) 158737 120555 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) 489297 430074 198 3576 20 0% 0 0 0
rubykon (click) 293201 236976 140 1523 2 0% 0 0 0
30k_ifelse (click) 5534225 4330254 9263 57807 0 0% 0 0 0
30k_methods (click) 2157201 1645784 5782 19362 0 0% 0 0 0
cfunc_itself (click) 151249 115872 8 50 0 0% 0 0 0
fib (click) 150353 115809 8 39 0 0% 0 0 0
getivar (click) 151249 117417 8 66 0 0% 0 0 0
keyword_args (click) 151825 115939 9 52 0 0% 0 0 0
respond_to (click) 153425 117326 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.