调用 wmi（仅限处理器）时如何修复缓慢的加载时间

Question

我的 C# 应用程序遇到问题。

我正在使用 WMI 检索有关我的 CPU、GPU 和 RAM 的一些信息。
除了 CPU (Win32_Processor).
我有一个菜单和每个不同的面板（CPU、RAM、GPU）。
起初我尝试的是在应用程序启动时加载所有信息，但效果不佳，加载时间很长。
其次，我尝试在面板可见时（单击按钮后）加载它们，这在 ram 和 gpu 面板上运行良好。
我对所有这些都使用了完全相同的代码。这是：
如果可能的话，我正在尝试使 cpu 信息加载速度与其他信息一样快，但是通过搜索和尝试我自己的东西，我无法做到这一点。
我确实意识到获取所有信息需要一些时间，需要那么多时间似乎很奇怪！
P.S：单击 cpu 面板按钮时的加载时间为 3.5 秒，单击 "specs" 按钮时仅显示最大频率、核心数、数据宽度、线程数、当前电压以及l2、l3大小需要8秒。

private void getinfo(string hwclass, string syntax, string name)
{
    ManagementObjectSearcher mos = new ManagementObjectSearcher("root\CIMV2", "SELECT * FROM " + hwclass);
    foreach (ManagementObject mo in mos.Get())
    {
        string valuebro = Convert.ToString(mo[syntax]);
        if (name == "CPUNAME")
        {
            CPUNAME.Text = valuebro;
        }
        else if (name == "CPUMAXFREQ")
        {
            //CPUMAXFREQ.Text = "Clocked at " + valuebro + "Mhz";
            maxfreqbro = Convert.ToInt32(valuebro);
        }
        else if (name == "CPUCURFREQ")
        {
            curfreqbro = Convert.ToInt32(valuebro);
            CPUMAXFREQ.Text = "Frequency: " + valuebro + "Mhz";
        }
        else if (name == "ThreadC")
        {
            THREADC.Text ="Threads: " + valuebro;
        }
        else if (name == "DataW")
        {
            DataW.Text = "Data Width: " +valuebro + " bit";
        }
        else if (name == "L2Size")
        {
            l2size = Convert.ToInt32(valuebro) / 1000;
            L2Size.Text = "L2 Size:  " + l2size.ToString() + " MB";
        }
        else if (name == "L3Size")
        {
            l3size = Convert.ToInt32(valuebro) / 1000;
            L3Size.Text ="L3 Size:  "+ l3size.ToString() + " MB";
        }
        else if (name == "NOC")
        {
            NoOfCores.Text = "Cores: " + valuebro;
        }
        else if (name == "VOLT")
        {
            voltage = Convert.ToDecimal(valuebro) / 10;
            output = voltage.ToString();
            CurrentVolt.Text = "Core Voltage: " + output + " V";
        }
        else if (name == "CPUSTATUS")
        {
            CPUSTATUS.Text = "Status: " + valuebro;
        }
        else if (name == "AVAIL")
        {
            Avail.Text = "Code: " + valuebro;
        }
    }
}

（内存）

private void raminfo(string hwclass, string syntax, string name)
{
    ManagementObjectSearcher ram = new ManagementObjectSearcher("root\CIMV2", "SELECT * FROM " + hwclass);
    foreach (ManagementObject rm in ram.Get())
    {
        string valueram = Convert.ToString(rm[syntax]);
        if (name == "OED")
        {
            OEDRAM.Text = "" + valueram;
        }
        else if (name == "ERRINFO")
        {
            ErrInfoRam.Text = "Error code: " + valueram;
        }
        else if (name == "ERRDESC")
        {
            ErrDescRAM.Text = "" + valueram;
        }
        else if (name == "CCVOLT")
        {
            volts = Convert.ToDecimal(valueram) / 1000;
            finaloutput = volts.ToString();
            voltageram.Text = "Voltage: " +finaloutput + " V";
        }
        else if (name == "CCSPEED")
        {
            Currentspeed.Text = "Current Frequency: " + valueram + " Mhz";
        }
        else if (name == "SPEED")
        {
            speedram.Text = "Max Frequency: " + valueram + " Mhz";
        }
        else if (name == "CAPA")
        {
            Int64 capa = Convert.ToInt64(valueram) / 1024;
            Int64 final = capa / 1024;
            capacityram.Text = "Total memory: " + final + " MB";
        }
    }
}

（显卡）

private void gpuinfo(string hwclass, string syntax, string name)
{
    ManagementObjectSearcher gpu = new ManagementObjectSearcher("root\CIMV2", "SELECT * FROM " + hwclass);
    foreach (ManagementObject gp in gpu.Get())
    {
        string valuegpu = Convert.ToString(gp[syntax]);
        if (name == "GPUNAME")
        {
            NameGPU.Text = valuegpu;
        }
        else if (name == "Availability")
        {
            AvailGPU.Text = "Status code: " + valuegpu;
        }
        else if (name == "CONFMEC")
        {
            CMEC.Text = "Error code: " + valuegpu;
        }
        else if (name == "DVer")
        {
            DriverVers.Text = "Driver Version: " + valuegpu;
        }
        else if (name == "ERDESC")
        {
            ErrDescr.Text = valuegpu;
        }
        else if (name == "ERRCLR")
        {
            ErrorClear.Text = valuegpu;
        }
        else if (name == "STAT")
        {
            StatusGPU.Text = "Status: " + valuegpu;
        }
    }
}

Answer 1

一个简单的更改将 WMI 查询过滤到所请求的字段，使我的查询速度提高了 100 多次：

ManagementObjectSearcher mos = new ManagementObjectSearcher("root\CIMV2", $"SELECT {syntax} FROM " + hwclass);

但是，还是无缘无故的多次查询。可以编写一个更高效的版本，一次查询所有需要的字段，而且速度仍然快 3 倍。此版本包括其他建议的改进：

private void cpuinfos(List<string> dataElements) {
    ManagementObjectSearcher mos = new ManagementObjectSearcher("root\CIMV2", $"SELECT {String.Join(",", dataElements)} FROM Win32_Processor");
    foreach (ManagementObject cpuInfo in mos.Get()) {
        foreach (var anElementName in dataElements) {
            string valuebro = Convert.ToString(cpuInfo[anElementName]);
            switch (anElementName) {
                case "Name":
                    CPUNAME.Text = valuebro;
                    break;
                case "MaxClockSpeed":
                    //CPUMAXFREQ.Text = "Clocked at " + valuebro + "Mhz";
                    maxfreqbro = Convert.ToInt32(valuebro);
                    break;
                case "CurrentClockSpeed":
                    curfreqbro = Convert.ToInt32(valuebro);
                    CPUMAXFREQ.Text = "Frequency: " + valuebro + "Mhz";
                    break;
                case "ThreadCount":
                    THREADC.Text = "Threads: " + valuebro;
                    break;
                case "DataWidth":
                    DataW.Text = "Data Width: " + valuebro + " bit";
                    break;
                case "L2CacheSize":
                    l2size = Convert.ToInt32(valuebro) / 1000;
                    L2Size.Text = "L2 Size:  " + l2size.ToString() + " MB";
                    break;
                case "L3CacheSize":
                    l3size = Convert.ToInt32(valuebro) / 1000;
                    L3Size.Text = "L3 Size:  " + l3size.ToString() + " MB";
                    break;
                case "NumberOfCores":
                    NoOfCores.Text = "Cores: " + valuebro;
                    break;
                case "CurrentVoltage":
                    voltage = Convert.ToDecimal(valuebro) / 10.0m;
                    output = voltage.ToString();
                    CurrentVolt.Text = "Core Voltage: " + output + " V";
                    break;
                case "Status":
                    CPUSTATUS.Text = "Status: " + valuebro;
                    break;
                case "Availability":
                    Avail.Text = "Code: " + valuebro;
                    break;
            }
        }
    }
}

您可以通过传递要收集的值来使用它：

cpuinfos(new List<string>() { "Name", "MaxClockSpeed", "ThreadCount" });

调用 wmi（仅限处理器）时如何修复缓慢的加载时间

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