Created
August 27, 2024 17:59
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| package sparse_gogo | |
| import ( | |
| "fmt" | |
| "strconv" | |
| "testing" | |
| ) | |
| const MIN_SIZE = 4 | |
| const MAX_SIZE = 20 | |
| const STEP = 2 | |
| func createMap(size int) map[int]string { | |
| m := make(map[int]string, size) | |
| for i := 0; i < size; i++ { | |
| m[i] = strconv.Itoa(i) | |
| } | |
| return m | |
| } | |
| func BenchmarkMapCreate(b *testing.B) { | |
| for size := MIN_SIZE; size <= MAX_SIZE; size += STEP { | |
| b.Run(fmt.Sprintf("Create map with size = %d", size), func(b *testing.B) { | |
| for i := 0; i < b.N; i++ { | |
| createMap(size) | |
| } | |
| }) | |
| } | |
| } | |
| func BenchmarkMapAccess(b *testing.B) { | |
| for size := MIN_SIZE; size <= MAX_SIZE; size += STEP { | |
| m := createMap(size) | |
| for _, idx := range []int{0, size / 2, size - 1} { | |
| b.Run(fmt.Sprintf("Access map size=%d, index=%d", size, idx), func(b *testing.B) { | |
| for i := 0; i < b.N; i++ { | |
| v, ok := m[idx] | |
| _, _ = v, ok | |
| } | |
| }) | |
| } | |
| } | |
| } | |
| type entry struct { | |
| idx int | |
| val string | |
| } | |
| func createSlice(size int) []entry { | |
| slc := make([]entry, size) | |
| for i := 0; i < size; i++ { | |
| slc[i] = entry{i, strconv.Itoa(i)} | |
| } | |
| return slc | |
| } | |
| func BenchmarkSliceCreate(b *testing.B) { | |
| for size := MIN_SIZE; size <= MAX_SIZE; size += STEP { | |
| b.Run(fmt.Sprintf("Create slice size=%d", size), func(b *testing.B) { | |
| createSlice(size) | |
| }) | |
| } | |
| } | |
| func BenchmarkSliceAccess(b *testing.B) { | |
| for size := MIN_SIZE; size <= MAX_SIZE; size += STEP { | |
| slc := createSlice(size) | |
| for _, idx := range []int{0, size / 2, size - 1} { | |
| b.Run(fmt.Sprintf("Access slice size=%d, index %d", size, idx), func(b *testing.B) { | |
| for i := 0; i < b.N; i++ { | |
| var v string | |
| for _, ent := range slc { | |
| if ent.idx == idx { | |
| v = ent.val | |
| break | |
| } | |
| } | |
| _ = v | |
| } | |
| }) | |
| } | |
| } | |
| } |
Author
Egor3f
commented
Aug 27, 2024
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