YJIT Benchmarks

Details for Benchmarks at 2021-10-18 19:10:35

Overall YJIT is 27.1% faster than interpreted CRuby!
On Railsbench specifically, YJIT is 19.9% 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 10 130 10 121 10 178
hexapdf 10 10 10 10 10 10
liquid-render 10 106 10 114 10 149
mail 10 119 10 125 10 134
psych-load 10 10 10 10 10 10
railsbench 10 10 10 10 10 10
binarytrees 10 44 10 69 10 59
fannkuchredux 10 10 10 10 10 10
jekyll 10 10 10 10 10 10
lee 10 10 10 13 10 16
nbody 10 173 10 331 10 255
optcarrot 10 10 10 10 10 10
30k_ifelse 10 10 10 10 10 52
30k_methods 10 10 10 10 10 17
cfunc_itself 10 217 10 337 10 488
fib 10 94 10 308 10 375
getivar 10 229 10 211 10 530
keyword_args 10 75 10 96 10 424
respond_to 10 74 10 89 10 110
setivar 10 284 10 264 10 458

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) 1112218 866202 185 1151 0 0% 0 0 0
hexapdf (click) 1066548 892673 604 7831 621 7% 0 0 320
liquid-render (click) 458516 375009 143 1287 94 7% 0 0 1
mail (click) 996314 770481 337 5194 129 2% 0 0 39
psych-load (click) 185002 149311 56 409 1 0% 0 0 0
railsbench (click) 2565617 1999141 1293 9586 262 2% 0 0 26
binarytrees (click) 113917 90204 9 49 0 0% 0 0 0
fannkuchredux (click) 129597 103451 6 203 0 0% 0 0 0
jekyll (click) 1965402 1633964 336 3754 173 4% 0 0 0
lee (click) 235242 181797 85 1091 114 10% 1 0 13
nbody (click) 123005 97556 8 149 0 0% 0 0 0
optcarrot (click) 459453 429726 196 3567 20 0% 0 0 0
30k_ifelse (click) 5560893 4890739 9261 57795 0 0% 0 0 0
30k_methods (click) 2118013 1816950 5780 19352 0 0% 0 0 0
cfunc_itself (click) 111997 88265 6 40 0 0% 0 0 0
fib (click) 110461 87838 6 29 0 0% 0 0 0
getivar (click) 112253 90679 6 56 0 0% 0 0 0
keyword_args (click) 112765 89153 7 42 0 0% 0 0 0
respond_to (click) 114621 90187 6 55 0 0% 0 0 0
setivar (click) 112253 88988 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.