33 lines
446 B
Go
33 lines
446 B
Go
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package main
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import (
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"fmt"
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"runtime"
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)
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func printAllocs() {
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var m runtime.MemStats
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runtime.ReadMemStats(&m)
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fmt.Printf("%d MB\n", m.Alloc/1024/1024)
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}
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func main() {
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printAllocs()
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data := make(map[int][128]byte) // try to use 129
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printAllocs()
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for i := 0; i < 1_000_000; i++ {
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data[i] = [128]byte{}
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}
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printAllocs()
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for i := 0; i < 1_000_000; i++ {
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delete(data, i)
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}
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runtime.GC()
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printAllocs()
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runtime.KeepAlive(data)
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}
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