gobrake slice pointer vs non pointer

bench_test.go

package gobrake

import "testing"

func BenchmarkSlicePtr(b *testing.B) {
        var (
                file     = "file.go"
                funcName = "func() error { return nil; }"
                line     = 42
        )
        for i := 0; i < b.N; i++ {
                stack := []*StackFrame{}
                for i := 0; i < 10e5; i++ {
                        stack = append(stack, &StackFrame{
                                File: file,
                                Line: line,
                                Func: funcName,
                        })
                }
        }
}

func BenchmarkSliceNonPtr(b *testing.B) {
        var (
                file     = "file.go"
                funcName = "func() error { return nil; }"
                line     = 42
        )
        for i := 0; i < b.N; i++ {
                stack := []StackFrame{}
                for i := 0; i < 10e5; i++ {
                        stack = append(stack, StackFrame{
                                File: file,
                                Line: line,
                                Func: funcName,
                        })
                }
        }
}

results

BenchmarkSlicePtr             10         131220169 ns/op
BenchmarkSliceNonPtr          20          73342001 ns/op
ok      github.com/airbrake/gobrake     3.083s