Is it expected that if multiple sub-benchmarks are run in the same
benchmark, the cost of the setup will impact the results from the first
benchmark but not the second?
func BenchmarkIntersection(b *testing.B) {
// Long setup -- ~5.5 seconds
b.Run("basic 1", func(b *testing.B) {
for i := 0; i < b.N; i++ {
// Do benchmark stuff
}
})
b.Run("basic 2", func(b *testing.B) {
for i := 0; i < b.N; i++ {
// Do benchmark stuff (EXACTLY THE SAME AS TEST 1)
}
})
}
Results in:
BenchmarkIntersection/basic_1-4 1 5521938867 ns/op
BenchmarkIntersection/basic_2-4 200000000 8.89 ns/op
Am I doing this wrong?
I don't see an issue raised against this--should I be raising one?
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