YJIT Benchmarks

Details for Benchmarks at 2021-09-22 07:09:49

Overall YJIT is 24.6% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 21.7% 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 YJIT warmups YJIT iters
activerecord 10 121 10 118 10 172
liquid-render 10 98 10 109 10 125
mail 10 119 10 123 10 132
psych-load 10 10 10 10 10 10
railsbench 10 10 10 10 10 10
binarytrees 10 43 10 69 10 58
fannkuchredux 10 10 10 10 10 10
jekyll 10 10 10 10 10 10
lee 10 10 10 13 10 15
nbody 10 171 10 331 10 268
optcarrot 10 10 10 10 10 10
30k_ifelse 10 10 10 10 10 51
30k_methods 10 10 10 10 10 19
cfunc_itself 10 212 10 335 10 483
fib 10 88 10 308 10 339
getivar 10 201 10 212 10 527
respond_to 10 78 10 88 10 114
setivar 10 290 10 265 10 441

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) 1082011 821218 185 1140 0 0% 0 0 0
liquid-render (click) 447381 356283 143 1271 93 7% 0 0 1
mail (click) 980443 746237 337 5228 123 2% 0 0 39
psych-load (click) 175082 137063 56 398 1 0% 0 0 0
railsbench (click) 2476210 1876840 1292 9183 255 2% 0 0 26
binarytrees (click) 108349 82474 9 49 0 0% 0 0 0
fannkuchredux (click) 123837 95758 6 203 0 0% 0 0 0
jekyll (click) 1908443 1544977 335 3612 173 4% 0 0 0
lee (click) 225322 169233 85 1045 111 10% 1 0 13
nbody (click) 117693 90204 8 149 0 0% 0 0 0
optcarrot (click) 644413 575411 286 5570 20 0% 0 0 0
30k_ifelse (click) 5564733 4883157 9261 57795 0 0% 0 0 0
30k_methods (click) 2118333 1809220 5780 19352 0 0% 0 0 0
cfunc_itself (click) 106365 80667 6 40 0 0% 0 0 0
fib (click) 104893 80240 6 29 0 0% 0 0 0
getivar (click) 107005 83327 6 56 0 0% 0 0 0
respond_to (click) 108669 82211 6 55 0 0% 0 0 0
setivar (click) 107069 81636 6 29 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.