A new optimization in Go 1.11 improves the efficiency of slice extension:
"The compiler now optimizes slice extension of the form append(s, make([]T, n)...)."
https://tip.golang.org/doc/go1.11#performance-compiler
Before:
BenchmarkMarshalUnmarshal-12 2000000 664 ns/op 0 B/op 0 allocs/op
BenchmarkReadWrite-12 500000 2395 ns/op 304 B/op 24 allocs/op
After:
BenchmarkMarshalUnmarshal-12 2000000 628 ns/op 0 B/op 0 allocs/op
BenchmarkReadWrite-12 500000 2411 ns/op 304 B/op 24 allocs/op
BenchmarkMarshalUnmarshal benchmarks the code in this package, BenchmarkReadWrite benchmarks the code in the standard library.
PiperOrigin-RevId: 209679979
Change-Id: I51c6302e53f60bf79f84576b1ead4d36658897cb
We have been unnecessarily creating too many savable types implicitly.
PiperOrigin-RevId: 206334201
Change-Id: Idc5a3a14bfb7ee125c4f2bb2b1c53164e46f29a8
Ian Gudger
Zhaozhong Ni
Googler