我正在尝试在我们的应用程序中解决WCF的性能问题。我通过服务从数据库中检索7500条记录，并发现了以下时间：
客户端使用net.tcp绑定来调用服务。设置显示为普通，服务标有[ServiceContract]和方法[OperationContract]和[UseNetDataContractSerializer]。
当针对服务器运行ANTS Performance Profiler时，我看到以下热门路径：
System.Threading._IOCompletionCallback.PerformIOCompletionCallback(uint errorCode, uint numBytes, NativeOverlapped* pOVERLAP)
System.Net.Sockets.SocketAsyncEventArgs.CompletionPortCallback(uint errorCode, uint numBytes, NativeOverlapped* nativeOverlapped)
System.Net.Sockets.SocketAsyncEventArgs.FinishOperationSuccess(SocketError socketError, int bytesTransferred, SocketFlags flags)
System.ServiceModel.Channels.SocketConnection.OnReceiveAsync(object sender, SocketAsyncEventArgs eventArgs)
System.ServiceModel.Channels.TracingConnection+TracingConnectionState.ExecuteCallback)
System.ServiceModel.Channels.ConnectionStream+IOAsyncResult.OnAsyncIOComplete(object state)
System.Runtime.AsyncResult.Complete(bool completedSynchronously)
System.Net.FixedSizeReader.ReadCallback(IAsyncResult transportResult)
System.Net.FixedSizeReader.CheckCompletionBeforeNextRead(int bytes)
System.Net.Security.NegotiateStream.ReadCallback(AsyncProtocolRequest asyncRequest)
System.Net.Security.NegotiateStream.ProcessFrameBody(int readBytes, byte[] buffer, int offset, int count, AsyncProtocolRequest asyncRequest)
System.Net.LazyAsyncResult.Complete(IntPtr userToken)
System.Runtime.Fx+AsyncThunk.UnhandledExceptionFrame(IAsyncResult result)
System.ServiceModel.Channels.SessionConnectionReader.OnAsyncReadComplete(object state)
System.ServiceModel.Channels.SynchronizedMessageSource+ReceiveAsyncResult.OnReceiveComplete(object state)
System.Runtime.AsyncResult.Complete(bool completedSynchronously)
System.Runtime.Fx+AsyncThunk.UnhandledExceptionFrame(IAsyncResult result)
System.ServiceModel.Channels.TransportDuplexSessionChannel+TryReceiveAsyncResult.OnReceive(IAsyncResult result)
System.Runtime.AsyncResult.Complete(bool completedSynchronously)
System.Runtime.Fx+AsyncThunk.UnhandledExceptionFrame(IAsyncResult result)
System.ServiceModel.Dispatcher.ChannelHandler.AsyncMessagePump(IAsyncResult result)
System.ServiceModel.Dispatcher.ChannelHandler.HandleRequest(RequestContext request, OperationContext currentOperationContext)
System.ServiceModel.Dispatcher.ChannelHandler.DispatchAndReleasePump(RequestContext request, bool cleanThread, OperationContext currentOperationContext)
System.ServiceModel.Dispatcher.MessageRpc.Process(bool isOperationContextSet)
System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage31(MessageRpc rpc)
System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage5(MessageRpc rpc)
System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage8(MessageRpc rpc)
System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage9(MessageRpc rpc)
System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.Reply(MessageRpc rpc)
System.ServiceModel.Channels.RequestContextBase.Reply(Message message, TimeSpan timeout)
System.ServiceModel.Channels.OutputChannel.Send(Message message, TimeSpan timeout)
System.ServiceModel.Channels.TransportDuplexSessionChannel.OnSend(Message message, TimeSpan timeout)
System.ServiceModel.Channels.FramingDuplexSessionChannel.OnSendCore(Message message, TimeSpan timeout)
System.ServiceModel.Channels.FramingDuplexSessionChannel.EncodeMessage(Message message)
System.ServiceModel.Channels.BinaryMessageEncoderFactory+BinaryMessageEncoder.WriteMessage(Message message, int maxMessageSize, BufferManager bufferManager, int messageOffset)
System.ServiceModel.Channels.BufferedMessageWriter.WriteMessage(Message message, BufferManager bufferManager, int initialOffset, int maxSizeQuota)
System.ServiceModel.Channels.Message.OnWriteMessage(XmlDictionaryWriter writer)
System.ServiceModel.Dispatcher.OperationFormatter+OperationFormatterMessage+OperationFormatterBodyWriter.OnWriteBodyContents(XmlDictionaryWriter writer)
System.ServiceModel.Dispatcher.DataContractSerializerOperationFormatter.SerializeBody(XmlDictionaryWriter writer, MessageVersion version, string action, MessageDescription messageDescription, object returnValue, object[] parameters, bool isRequest)
System.ServiceModel.Dispatcher.DataContractSerializerOperationFormatter.SerializeParameter(XmlDictionaryWriter writer, DataContractSerializerOperationFormatter+PartInfo part, object graph)
System.ServiceModel.Dispatcher.DataContractSerializerOperationFormatter.SerializeParameterPart(XmlDictionaryWriter writer, DataContractSerializerOperationFormatter+PartInfo part, object graph)
System.Runtime.Serialization.XmlObjectSerializer.WriteObject(XmlDictionaryWriter writer, object graph)
System.Runtime.Serialization.XmlObjectSerializer.WriteObjectHandleExceptions(XmlWriterDelegator writer, object graph, DataContractResolver dataContractResolver)
System.Runtime.Serialization.NetDataContractSerializer.InternalWriteObject(XmlWriterDelegator writer, object graph)
System.Runtime.Serialization.NetDataContractSerializer.InternalWriteObjectContent(XmlWriterDelegator writer, object graph, DataContract contract, Hashtable surrogateDataContracts)
System.Runtime.Serialization.ClassDataContract.WriteXmlValue(XmlWriterDelegator xmlWriter, object obj, XmlObjectSerializerWriteContext context)
(Unmanaged code)
System.Runtime.Serialization.XmlObjectSerializerWriteContext.InternalSerializeReference(XmlWriterDelegator xmlWriter, object obj, bool isDeclaredType, bool writeXsiType, int declaredTypeID, RuntimeTypeHandle declaredTypeHandle)
System.Runtime.Serialization.XmlObjectSerializerWriteContext.InternalSerialize(XmlWriterDelegator xmlWriter, object obj, bool isDeclaredType, bool writeXsiType, int declaredTypeID, RuntimeTypeHandle declaredTypeHandle)
System.Runtime.Serialization.ClassDataContract.WriteXmlValue(XmlWriterDelegator xmlWriter, object obj, XmlObjectSerializerWriteContext context)
System.Runtime.Serialization.XmlObjectSerializerWriteContext.WriteISerializable(XmlWriterDelegator xmlWriter, ISerializable obj)
System.Runtime.Serialization.XmlObjectSerializerWriteContext.WriteSerializationInfo(XmlWriterDelegator xmlWriter, Type objType, SerializationInfo serInfo)
System.Runtime.Serialization.XmlObjectSerializerWriteContext.InternalSerializeReference(XmlWriterDelegator xmlWriter, object obj, bool isDeclaredType, bool writeXsiType, int declaredTypeID, RuntimeTypeHandle declaredTypeHandle)
System.Runtime.Serialization.XmlObjectSerializerWriteContext.InternalSerialize(XmlWriterDelegator xmlWriter, object obj, bool isDeclaredType, bool writeXsiType, int declaredTypeID, RuntimeTypeHandle declaredTypeHandle)
System.Runtime.Serialization.XmlObjectSerializerWriteContext.SerializeWithXsiType(XmlWriterDelegator xmlWriter, object obj, RuntimeTypeHandle objectTypeHandle, Type objectType, int declaredTypeID, RuntimeTypeHandle declaredTypeHandle, Type declaredType)
System.Runtime.Serialization.XmlObjectSerializerWriteContext.SerializeAndVerifyType(DataContract dataContract, XmlWriterDelegator xmlWriter, object obj, bool verifyKnownType, RuntimeTypeHandle declaredTypeHandle, Type declaredType)
System.Runtime.Serialization.CollectionDataContract.WriteXmlValue(XmlWriterDelegator xmlWriter, object obj, XmlObjectSerializerWriteContext context)
(Unmanaged code)
System.Runtime.Serialization.XmlObjectSerializerWriteContext.InternalSerialize(XmlWriterDelegator xmlWriter, object obj, bool isDeclaredType, bool writeXsiType, int declaredTypeID, RuntimeTypeHandle declaredTypeHandle)
System.Runtime.Serialization.ClassDataContract.WriteXmlValue(XmlWriterDelegator xmlWriter, object obj, XmlObjectSerializerWriteContext context)
(Unmanaged code)
System.Runtime.Serialization.XmlObjectSerializerWriteContext.InternalSerializeReference(XmlWriterDelegator xmlWriter, object obj, bool isDeclaredType, bool writeXsiType, int declaredTypeID, RuntimeTypeHandle declaredTypeHandle)
System.Runtime.Serialization.XmlObjectSerializerWriteContext.InternalSerialize(XmlWriterDelegator xmlWriter, object obj, bool isDeclaredType, bool writeXsiType, int declaredTypeID, RuntimeTypeHandle declaredTypeHandle)
System.Runtime.Serialization.ClassDataContract.WriteXmlValue(XmlWriterDelegator xmlWriter, object obj, XmlObjectSerializerWriteContext context)
(Unmanaged code)
System.Runtime.Serialization.XmlObjectSerializerWriteContext.InternalSerialize(XmlWriterDelegator xmlWriter, object obj, bool isDeclaredType, bool writeXsiType, int declaredTypeID, RuntimeTypeHandle declaredTypeHandle)
System.Runtime.Serialization.ClassDataContract.WriteXmlValue(XmlWriterDelegator xmlWriter, object obj, XmlObjectSerializerWriteContext context)
System.Runtime.Serialization.XmlObjectSerializerWriteContext.WriteISerializable(XmlWriterDelegator xmlWriter, ISerializable obj)
System.Runtime.Serialization.XmlObjectSerializerWriteContext.WriteSerializationInfo(XmlWriterDelegator xmlWriter, Type objType, SerializationInfo serInfo)
System.Runtime.Serialization.XmlObjectSerializerWriteContext.InternalSerializeReference(XmlWriterDelegator xmlWriter, object obj, bool isDeclaredType, bool writeXsiType, int declaredTypeID, RuntimeTypeHandle declaredTypeHandle)
System.Runtime.Serialization.XmlObjectSerializerWriteContext.InternalSerialize(XmlWriterDelegator xmlWriter, object obj, bool isDeclaredType, bool writeXsiType, int declaredTypeID, RuntimeTypeHandle declaredTypeHandle)
System.Runtime.Serialization.XmlObjectSerializerWriteContext.SerializeWithXsiType(XmlWriterDelegator xmlWriter, object obj, RuntimeTypeHandle objectTypeHandle, Type objectType, int declaredTypeID, RuntimeTypeHandle declaredTypeHandle, Type declaredType)
System.Runtime.Serialization.XmlObjectSerializerWriteContext.SerializeAndVerifyType(DataContract dataContract, XmlWriterDelegator xmlWriter, object obj, bool verifyKnownType, RuntimeTypeHandle declaredTypeHandle, Type declaredType)
System.Runtime.Serialization.CollectionDataContract.WriteXmlValue(XmlWriterDelegator xmlWriter, object obj, XmlObjectSerializerWriteContext context)
(Unmanaged code)
System.Runtime.Serialization.XmlObjectSerializerWriteContext.InternalSerialize(XmlWriterDelegator xmlWriter, object obj, bool isDeclaredType, bool writeXsiType, int declaredTypeID, RuntimeTypeHandle declaredTypeHandle)
System.Runtime.Serialization.ClassDataContract.WriteXmlValue(XmlWriterDelegator xmlWriter, object obj, XmlObjectSerializerWriteContext context)
(Unmanaged code)
System.Runtime.Serialization.XmlObjectSerializerWriteContext.InternalSerializeReference(XmlWriterDelegator xmlWriter, object obj, bool isDeclaredType, bool writeXsiType, int declaredTypeID, RuntimeTypeHandle declaredTypeHandle)
System.Runtime.Serialization.XmlObjectSerializerWriteContext.InternalSerialize(XmlWriterDelegator xmlWriter, object obj, bool isDeclaredType, bool writeXsiType, int declaredTypeID, RuntimeTypeHandle declaredTypeHandle)
System.Runtime.Serialization.XmlObjectSerializerWriteContext.SerializeWithXsiType(XmlWriterDelegator xmlWriter, object obj, RuntimeTypeHandle objectTypeHandle, Type objectType, int declaredTypeID, RuntimeTypeHandle declaredTypeHandle, Type declaredType)
System.Runtime.Serialization.XmlObjectSerializerWriteContext.SerializeAndVerifyType(DataContract dataContract, XmlWriterDelegator xmlWriter, object obj, bool verifyKnownType, RuntimeTypeHandle declaredTypeHandle, Type declaredType)
System.Runtime.Serialization.ClassDataContract.WriteXmlValue(XmlWriterDelegator xmlWriter, object obj, XmlObjectSerializerWriteContext context)
(Unmanaged code)
System.Runtime.Serialization.XmlObjectSerializerWriteContext.InternalSerializeReference(XmlWriterDelegator xmlWriter, object obj, bool isDeclaredType, bool writeXsiType, int declaredTypeID, RuntimeTypeHandle declaredTypeHandle)
System.Runtime.Serialization.XmlObjectSerializerWriteContextComplex.OnHandleReference(XmlWriterDelegator xmlWriter, object obj, bool canContainCyclicReference)
System.Runtime.Serialization.ObjectToIdCache.GetId(object obj, ref bool newId)
System.Runtime.Serialization.ObjectToIdCache.Rehash)
System.Runtime.Serialization.ObjectToIdCache.FindElement(object obj, out bool isEmpty, out bool isWrapped)
为什么BinaryMessageEncoder正在呼叫XmlObjectSerializer？
它首先序列化为XML，然后是二进制，或者我的服务以某种方式配置为序列化为XML，这是正常的WCF行为吗？
我也将服务公开为HTTP，但我已经仔细检查过客户端确实使用了net.tcp。
我做了一些挖掘，但未能找到任何问题。我也不能在玩具示例中重现它。没有byte []属性或类似的东西。