我正在調用每個帶有 Go 例程的兩個函數，我希望同時執行它們所花費的時間應該比我一次運行它們要少得多。但我看到完全相反，并行運行它們需要相同或有時更少的時間。協程    start := time.Now()    incomeChan := make(chan func() ([]models.Cashflow, *models.ErrorResponse))    expenseChan := make(chan func() ([]models.Cashflow, *models.ErrorResponse))    go func(from, to string, cr *fa.Client, c chan<-func() ([]models.Cashflow, *models.ErrorResponse)) {        log.Println("fetching income")        c <- func() ([]models.Cashflow, *models.ErrorResponse) { return incomes(from, to, cr)}        close(c)    }(from, to, cr, incomeChan)    go func(from, to string, cr *fa.Client, c chan<-func() ([]models.Cashflow, *models.ErrorResponse)){        log.Println("fetching expenses")        c <- func() ([]models.Cashflow, *models.ErrorResponse) {return expenses(from, to, cr)}        close(c)    } (from, to, cr, expenseChan)    income, inErr := (<- incomeChan)()    if inErr != nil {        log.Printf("%#v", inErr)        w.WriteHeader(inErr.Code)        fmt.Fprint(w, helper.JsonStringify(inErr))        return    }    log.Println("income fetch completed")    expense, exErr := (<- expenseChan)()    if exErr != nil {        log.Printf("%#v", exErr)        w.WriteHeader(exErr.Code)        fmt.Fprint(w, helper.JsonStringify(exErr))        return    }    log.Println("expense fetch completed")    fmt.Printf("%.2fs elapsed\n", time.Since(start).Seconds())輸出3.33s elapsed2.79s elapsed3.37s elapsed順序的    income, inErr := incomes(from, to, cr)    if inErr != nil {        log.Printf("%#v", inErr)        w.WriteHeader(inErr.Code)        fmt.Fprint(w, helper.JsonStringify(inErr))        return    }        expense, exErr := expenses(from, to, cr)    if exErr != nil {        log.Printf("%#v", exErr)        w.WriteHeader(exErr.Code)        fmt.Fprint(w, helper.JsonStringify(exErr))        return    }    fmt.Printf("%.2fs elapsed\n", time.Since(start).Seconds())輸出2.98s elapsed3.03s elapsed2.70s elapsed是我在這里做錯了嗎？我期待它花更少的時間在 Goroutine 上。如果有人對我在這里可能做錯了什么有任何線索或有任何建議，非常感謝。