通过可靠的会话，WCF服务运行速度非常慢

Question

服务器托管在WPF应用程序上，并使用net.tcp绑定进行双工通道。我们有客户端（.NET 4.0）向服务器发送一串异步请求。在可靠的会话开启后，服务变得非常慢（大约50-100个呼叫/秒），并且回叫消息不会发送到客户端。

问题发生在两种情况下。

1. 我们发送约。每秒1000条消息到服务器。如果我们发送300-500条消息就行了。

2. 我们向服务器发送一条大小为10-20 MB的邮件。在这种情况下，来自服务器回调的消息将一直等到大消息发送。

以下是服务器和客户端的代码。

服务器绑定：

（另外我们尝试使用标准的net.tcp绑定而不是自定义但没有帮助）

var customBinding= new CustomBinding()
                    {
                        CloseTimeout = new TimeSpan(0, 1, 10),
                        OpenTimeout = new TimeSpan(0, 1, 10),
                        ReceiveTimeout = new TimeSpan(0, 5, 30),
                        SendTimeout = new TimeSpan(0, 2, 0)
                    };
                       customBinding.Elements.Add(new BinaryMessageEncodingBindingElement()
                         {
                             MessageVersion = MessageVersion.Default,
                             ReaderQuotas =
                             {
                                 MaxBytesPerRead = int.MaxValue,
                                 MaxDepth = int.MaxValue,
                                 MaxNameTableCharCount = int.MaxValue,
                                 MaxStringContentLength = int.MaxValue,
                                 MaxArrayLength = int.MaxValue
                             }
                         });
                       customBinding.Elements.Add(new ReliableSessionBindingElement()
                            {
                                AcknowledgementInterval = TimeSpan.FromMilliseconds(1),
                                FlowControlEnabled = true,
                                InactivityTimeout = new TimeSpan(0, 30, 0),
                                MaxPendingChannels = 1000,
                                MaxRetryCount = 10,
                                MaxTransferWindowSize = 4096,
                                Ordered = true,
                                ReliableMessagingVersion = ReliableMessagingVersion.Default
                            });
        var tcpTransport = new TcpTransportBindingElement()
                       {
                           ChannelInitializationTimeout = TimeSpan.FromSeconds(30),
                           ConnectionBufferSize =8192,
                           ListenBacklog = 10000000,
                           MaxBufferPoolSize = int.MaxValue,
                           MaxBufferSize = int.MaxValue,
                           MaxOutputDelay= TimeSpan.FromMilliseconds(1000),
                           MaxPendingAccepts = int.MaxValue,
                           MaxPendingConnections = 40000,
                           MaxReceivedMessageSize = int.MaxValue,
                           PortSharingEnabled = true,
                           TransferMode = TransferMode.Buffered,
                       };
                       tcpTransport.ConnectionPoolSettings.GroupName = "OnlineList";
                       tcpTransport.ConnectionPoolSettings.IdleTimeout = TimeSpan.FromMinutes(5);
                       tcpTransport.ConnectionPoolSettings.LeaseTimeout = TimeSpan.FromMinutes(5);
                       tcpTransport.ConnectionPoolSettings.MaxOutboundConnectionsPerEndpoint = 40000;
                       customBinding.Elements.Add(tcpTransport);

客户端配置：

BaseTimeout = 7000;
        int.MaxValue = 2147483647;
        ///Common
                CloseTimeout = new TimeSpan(0, 0, BaseTimeout),
                OpenTimeout = new TimeSpan(0, 0, BaseTimeout),
                ReceiveTimeout = new TimeSpan(0, 0, BaseTimeout*4),
               SendTimeout = new TimeSpan(0, 0, BaseTimeout),
                ///Security
                Security = { Mode = SecurityMode.None },
                ///Session
                ReliableSession =
                {
                    Enabled = true,
                    InactivityTimeout = new TimeSpan(1, 10, 0),
                    Ordered = true
                },
                ///Buffer and message
                MaxBufferPoolSize = int.MaxValue,
                MaxBufferSize = int.MaxValue,
                MaxReceivedMessageSize = int.MaxValue,
                ///ReaderQuotas
                ReaderQuotas =
                {
                    MaxBytesPerRead = int.MaxValue,
                    MaxDepth = int.MaxValue,
                    MaxNameTableCharCount = int.MaxValue,
                    MaxStringContentLength = int.MaxValue,
                    MaxArrayLength = int.MaxValue
                },
                //Other
                PortSharingEnabled = true,
                MaxConnections = 1000,
                TransactionFlow = true,
                TransferMode = TransferMode.Buffered,