YJIT Benchmarks

Details for Benchmarks at 2022-01-14 20:52:29

Overall YJIT is 31.6% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 28.7% 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 MJIT3.0 warmups MJIT3.0 iters MJIT warmups MJIT iters YJIT warmups YJIT iters
activerecord 5 196 20 196 75 196 20 196
hexapdf 5 15 20 15 20 15
liquid-render 5 177 20 177 75 177 20 177
mail 5 145 20 145 75 145 20 145
psych-load 5 15 20 15 75 15 20 15
railsbench 5 15 20 15 75 15 20 15
binarytrees 5 87 20 87 75 87 20 87
erubi 5 56 20 56 75 56 20 56
erubi_rails 5 1022 20 1022 75 1022 20 1022
fannkuchredux 5 15 20 15 75 15 20 15
lee 5 26 20 26 75 26 20 26
nbody 5 344 20 344 75 344 20 344
optcarrot 5 15 20 15 75 15 20 15
rubykon 5 15 20 15 44 15 20 15
30k_ifelse 5 65 20 65 75 65 20 65
30k_methods 5 26 20 26 43 26 20 26
cfunc_itself 5 543 20 543 75 543 20 543
fib 5 384 20 384 75 384 20 384
getivar 5 982 20 982 75 982 20 982
keyword_args 5 456 20 456 75 456 20 456
respond_to 5 118 20 118 75 118 20 118
setivar 5 2180 20 2180 75 2180 20 2180

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) 966161 740506 185 1198 0 0% 0 0 0
hexapdf (click) 1094993 897149 599 8173 614 7% 0 0 321
liquid-render (click) 478929 380977 143 1572 95 6% 0 0 1
mail (click) 878737 657305 325 5535 124 2% 0 0 39
psych-load (click) 296465 234014 58 445 1 0% 0 0 0
railsbench (click) 2508753 1911103 1297 9324 268 2% 0 0 26
binarytrees (click) 112465 86374 10 54 0 0% 0 0 0
erubi (click) 295185 234630 9 73 0 0% 0 0 0
erubi_rails (click) 1887185 1421306 261 1870 18 0% 0 0 3
fannkuchredux (click) 126225 97072 7 184 0 0% 0 0 0
lee (click) 336977 265264 45 586 72 12% 0 0 12
nbody (click) 121745 93575 9 154 0 0% 0 0 0
optcarrot (click) 448977 399205 197 3571 20 0% 0 0 0
rubykon (click) 253009 206217 139 1524 2 0% 0 0 0
30k_ifelse (click) 5501521 4306698 9262 57800 0 0% 0 0 0
30k_methods (click) 2116689 1615160 5781 19357 0 0% 0 0 0
cfunc_itself (click) 110929 85003 7 45 0 0% 0 0 0
fib (click) 109521 84611 7 34 0 0% 0 0 0
getivar (click) 111249 87122 7 61 0 0% 0 0 0
keyword_args (click) 113105 86347 8 47 0 0% 0 0 0
respond_to (click) 113105 86457 7 60 0 0% 0 0 0
setivar (click) 111249 85646 7 34 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.