Question

我有一个服务器在请求期间传输数据期间抛出System.OutOfMemoryException。从这条踪迹来看，我的假设是对的吗？

System.OutOfMemoryException: Exception of type 'System.OutOfMemoryException' was thrown.
  at System.Net.Security.NegoState.ProcessAuthentication(LazyAsyncResult lazyResult)
  at System.Net.Security.NegotiateStream.AuthenticateAsServer(NetworkCredential credential, ProtectionLevel requiredProtectionLevel, TokenImpersonationLevel requiredImpersonationLevel)
  at System.ServiceModel.Channels.WindowsStreamSecurityUpgradeProvider.WindowsStreamSecurityUpgradeAcceptor.OnAcceptUpgrade(Stream stream, SecurityMessageProperty& remoteSecurity)
  at System.ServiceModel.Channels.StreamSecurityUpgradeAcceptorBase.AcceptUpgrade(Stream stream)
  at System.ServiceModel.Channels.InitialServerConnectionReader.UpgradeConnection(IConnection connection, StreamUpgradeAcceptor upgradeAcceptor, IDefaultCommunicationTimeouts defaultTimeouts)
  at System.ServiceModel.Channels.ServerSessionPreambleConnectionReader.ServerFramingDuplexSessionChannel.OnOpen(TimeSpan timeout)
  at System.ServiceModel.Channels.CommunicationObject.Open(TimeSpan timeout)
  at System.ServiceModel.Channels.CommunicationObject.Open()
  at System.ServiceModel.Dispatcher.ChannelHandler.OpenAndEnsurePump()
  at System.ServiceModel.Dispatcher.ChannelHandler.OpenAndEnsurePump(Object state)
  at System.ServiceModel.Channels.IOThreadScheduler.CriticalHelper.WorkItem.Invoke2()
  at System.ServiceModel.Channels.IOThreadScheduler.CriticalHelper.WorkItem.OnSecurityContextCallback(Object o)
  at System.Security.SecurityContext.Run(SecurityContext securityContext, ContextCallback callback, Object state)
  at System.ServiceModel.Channels.IOThreadScheduler.CriticalHelper.WorkItem.Invoke()
  at System.ServiceModel.Channels.IOThreadScheduler.CriticalHelper.ProcessCallbacks()
  at System.ServiceModel.Channels.IOThreadScheduler.CriticalHelper.CompletionCallback(Object state)
  at System.ServiceModel.Channels.IOThreadScheduler.CriticalHelper.ScheduledOverlapped.IOCallback(UInt32 errorCode, UInt32 numBytes, NativeOverlapped* nativeOverlapped)
  at System.ServiceModel.Diagnostics.Utility.IOCompletionThunk.UnhandledExceptionFrame(UInt32 error, UInt32 bytesRead, NativeOverlapped* nativeOverlapped)
  at System.Threading._IOCompletionCallback.PerformIOCompletionCallback(UInt32 errorCode, UInt32 numBytes, NativeOverlapped* pOVERLAP)

我有maxArrayLength，而maxStringContentLength在我的配置文件中设置得非常高。是否有可能其中一个非常巨大，并导致通道抛出此错误？这是一个.NET WCF服务，它通过IPC与另一个进程进行本地通信。

Answer 1

鉴于这是一个生产问题，它偶尔发生在不同的地方，我猜你的内存利用率很高。我将获得系统的内存转储并使用WinDbg来查看导致此问题的原因。

您可以使用proc dump或Debug Diag执行此操作（但请确保使用32位或64位，具体取决于您需要的位置）。

如果您之前从未对内存进行过分析（并且真的不容易），那么您可能需要查看this article

请求期间带有WCF的System.OutOfMemoryException

1 个答案: