如何在网络带宽脚本中降低CPU使用率

本文关键字：CPU 使用率 脚本 网络带宽 | 更新日期: 2023-09-27 18:17:07

我编写这个类是为了监视通过所有网络接口的带宽。虽然这一切都工作得很好，但我想尝试减少查询期间的CPU使用。原因是我每隔几秒钟就运行一次，每次都会增加大约7-8%的CPU使用率。有什么方法可以减少CPU周期的数量吗?

PerformanceCounterCategory category = new PerformanceCounterCategory("Network Interface");
        String[] instancename = category.GetInstanceNames();
        foreach (string name in instancename)
        {
            String networkCard = name;
            const int numberOfIterations = 10;
            PerformanceCounter bandwidthCounter = new PerformanceCounter("Network Interface", "Current Bandwidth", networkCard);
            float bandwidth = bandwidthCounter.NextValue();
            PerformanceCounter dataSentCounter = new PerformanceCounter("Network Interface", "Bytes Sent/sec", networkCard);
            PerformanceCounter dataReceivedCounter = new PerformanceCounter("Network Interface", "Bytes Received/sec", networkCard);
            float sendSum = 0;
            float receiveSum = 0;
            for (int index = 0; index < numberOfIterations; index++)
            {
                sendSum += dataSentCounter.NextValue();
                receiveSum += dataReceivedCounter.NextValue();
            }
            float dataSent = sendSum;
            float dataReceived = receiveSum;

            double dout = (((8 * (dataSent)) / (bandwidth * numberOfIterations) * 100) * 1024) / 100;
            double din = (((8 * (dataReceived)) / (bandwidth * numberOfIterations) * 100) * 1024) / 100;
            dout = Math.Round(dout, 2);
            din = Math.Round(din, 2);
            string doutround = Convert.ToString(dout);
            string dinround = Convert.ToString(din);

            String output = dinround + "/" + doutround;

                GlobalsWMI.NetIOs.Add(output);

        }
        String tooutput = String.Join("AND", GlobalsWMI.NetIOs);
        GlobalsWMI.NetIOs.Clear();
        return tooutput;

如何在网络带宽脚本中降低CPU使用率

好的，我已经尝试了各种各样的东西，我认为这个版本快得多:

private string GetNetworkUsage(System.Net.NetworkInformation.NetworkInterface[] nis)
{
foreach (NetworkInterface ni in nis)
            {
                float bandwidth = ni.Speed;
                const int numberOfIterations = 10;
                float sendSum = 0;
                float receiveSum = 0;
                float lastRec = ni.GetIPv4Statistics().BytesReceived;
                float lastSent = ni.GetIPv4Statistics().BytesSent;
                for (int index = 0; index < numberOfIterations; index++)
                {
                    System.Threading.Thread.Sleep(10);
                    float br = ni.GetIPv4Statistics().BytesReceived;
                    float bs = ni.GetIPv4Statistics().BytesSent;
                    receiveSum += br - lastRec;
                    sendSum += bs - lastSent;
                    lastRec = br;
                    lastSent = bs;
                }
                float dataSent = sendSum;
                float dataReceived = receiveSum;
                double dout = (((8 * (dataSent)) / (bandwidth) * 100) * 1024) / 100;
                double din = (((8 * (dataReceived)) / (bandwidth) * 100) * 1024) / 100;
                dout = Math.Round(dout, 2);
                din = Math.Round(din, 2);
                string doutround = Convert.ToString(dout);
                string dinround = Convert.ToString(din);
                String output = dinround + "/" + doutround;

                GlobalsWMI.NetIOs.Add(output);
            }
            String tooutput = String.Join("AND", GlobalsWMI.NetIOs);
            GlobalsWMI.NetIOs.Clear();
            return tooutput;
}

这样写:

    System.Net.NetworkInformation.NetworkInterface[] nis = System.Net.NetworkInformation.NetworkInterface.GetAllNetworkInterfaces();
    // this is you for loop add you sleep or however you do it here
    for (int i = 0; i < int.MaxValue; i++)
    {
        Console.WriteLine(test(nis));
    }

在我的系统上尝试过，它使用的CPU更少，速度更快，但我会仔细检查数字是否如您所期望的。

您可以在某些时候使用System.Threading.Thread.Sleep(x)来减少CPU使用-您的检查将持续更长时间，但平均CPU使用更少

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