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Currently parseRecord will always start with a nil slice and then resize the slice on append. For input with a fixed number of fields per record we can preallocate the slice to avoid having to resize the slice. This change implements this optimization by using FieldsPerRecord as capacity if it's > 0 and also adds a benchmark to better show the differences. benchmark old ns/op new ns/op delta BenchmarkRead 19741 17909 -9.28% benchmark old allocs new allocs delta BenchmarkRead 59 41 -30.51% benchmark old bytes new bytes delta BenchmarkRead 6276 5844 -6.88% Change-Id: I7c2abc9c80a23571369bcfcc99a8ffc474eae7ab Reviewed-on: https://go-review.googlesource.com/8880 Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> |
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| .. | ||
| reader.go | ||
| reader_test.go | ||
| writer.go | ||
| writer_test.go | ||