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Benchmarks

The repository contains benchmarks to measure the overhead of the SemanticDB compiler plugin.

$ sbt
...
sbt:root> bench/jmh:run -i 10 -wi 10 -f1 -t1
...
[info] Benchmark                           (lib)  Mode  Cnt     Score     Error  Units
[info] CompileBench.compile                guava    ss   10  2291.036 ± 243.428  ms/op 1x
[info] CompileBench.compileSemanticdb      guava    ss   10  3444.978 ± 408.569  ms/op 1.5x
[info] CompileBench.compile            bytebuddy    ss   10  1819.150 ± 191.530  ms/op 1x
[info] CompileBench.compileSemanticdb  bytebuddy    ss   10  2641.590 ± 203.537  ms/op 1.45x
  • Date: Monday 15 Feb 2021.
  • Hardware: MacBook Pro (16-inch, 2019), 2,6 GHz 6-Core Intel Core i7, 32 GB 2667 MHz DDR4.
  • Interpretation: enabling the SemanticDB compiler plugin slows down normal compilation by 45-50%.
  • Recommendation: do not enable the SemanticDB compiler plugin during local edit-and-test workflows. The compiler plugin is primarily intended to be enabled in custom CI jobs to upload LSIF indexes.
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