~~~ package main import ( "fmt" "runtime" "sync" ) func getGoroutineMemConsume() { var c chan int var wg sync.WaitGroup const goroutineNum = 1e4 // 1 * 10^4 memConsumed := func() uint64 { runtime.GC() //GC,排除对象影响 var memStat runtime.MemStats runtime.ReadMemStats(&memStat) return memStat.Sys } noop := func() { wg.Done() <-c //防止goroutine退出,内存被释放 } wg.Add(goroutineNum) before := memConsumed() //获取创建goroutine前内存 for i := 0; i < goroutineNum; i++ { go noop() } wg.Wait() after := memConsumed() //获取创建goroutine后内存 fmt.Printf("%.3f KB\n", float64(after-before)/goroutineNum/1000) } ~~~