.NET 8调用WCF服务性能远逊于.NET Framework 4.7问题求助

将依赖WCF连接仪器设备的.NET Framework 4.7类库迁移至.NET 8后，所有WCF服务调用性能出现大幅下降（非首次调用独有问题）：本地同机运行时，.NET Framework 4.7下性能测试耗时约3秒，.NET 8下耗时长达35秒，每次服务调用存在约2秒的额外开销。

性能测试代码 #

public void PerformanceTest()
{
      var stopWatch = Stopwatch.StartNew();
      Console.WriteLine("Start: " + stopWatch.ElapsedMilliseconds);

      using (var target = MakeGaiaNetworkInstrument())
      {
           Console.WriteLine("After constructor: " + stopWatch.ElapsedMilliseconds);

           Assert.AreEqual(true, target.Lock(), "Lock failed");
           var testParamStringName = "Parameter Name";
           var testValueString = "Value";
           target.SetParameter(testParamStringName, testValueString);

           Console.WriteLine("Before loop: " + stopWatch.ElapsedMilliseconds);

           for (var repetition = 0; repetition < 10; repetition++)
           {
               Assert.AreEqual(testValueString, target.GetParameter(testParamStringName));
           }

           Assert.AreEqual(true, target.Unlock());

           Console.WriteLine("After loop: " + stopWatch.ElapsedMilliseconds);
       }
}

注：target为WCF客户端代理实例。

测试输出对比 #

.NET Framework 4.7测试输出 #

Start: 0
After constructor: 3310
Before loop: 3321
After loop: 3347

.NET 8测试输出 #

Start: 0
After constructor: 8508
Before loop: 12609
After loop: 35268

Added measurement for each method in the new code:
Start: 0
After constructor: 6567
Gaia Lock took: 2045
Gaia SetParameter took: 2043
Before loop: 10659
Gaia GetParameter took: 2030
Gaia GetParameter took: 2024
Gaia GetParameter took: 2047
Gaia GetParameter took: 2025
Gaia GetParameter took: 2030
Gaia GetParameter took: 2043
Gaia GetParameter took: 2052
Gaia GetParameter took: 2063
Gaia GetParameter took: 2042
Gaia GetParameter took: 2047
Gaia Unlock took: 2043 
After loop: 33112

WCF客户端代理创建代码 #

var binding = new BasicHttpBinding
{
    MaxReceivedMessageSize = 10 * 1024 * 1024,
    ReaderQuotas = new XmlDictionaryReaderQuotas { MaxStringContentLength = 100000, },
    UseDefaultWebProxy = false,
    BypassProxyOnLocal = true,
};
this.server = new GaiaServicePortTypeClient(binding, new EndpointAddress(this.ServerUri));

已尝试的优化措施 #

• 修改缓存设置、添加消息处理行为，无任何效果
• 使用空BasicHttpBinding配置，性能未改善
• 将UseDefaultWebProxy设置为true，无性能提升
• 代理代码从原svcutil工具生成改为dotnet-svcutil生成，通过Fiddler验证发送至服务端的XML请求完全一致

服务端为C++编写，无法修改；运行环境为全新安装的Windows 11。

内容的提问来源于stack exchange，提问作者user24146667