how to resolve high CPU usage and crash for asp.net application caused by System.Web.Handlers.TransferRequestHandler?

Question

I have an ASP.NET application deployed on a server 4 vCPU, 10GB RAM, SSD HDD. Looking up on NewRelic, I found the root cause to be:

System.Web.Handlers.TransferRequestHandler

I also, did an analysis using DebugDiag and the findings were: The Performance Analysis shows that:

The Top Threads By Avg CPU was:

Thread 3428 - Microsoft.Win32.Win32Native.ReadFile(Microsoft.Win32.SafeHandles.SafeFileHandle, Byte*, Int32, Int32 ByRef, IntPtr)

All functions in these threads (excludes boiler-plate functions)

System.Web.Hosting.UnsafeIISMethods.MgdIndicateCompletion(IntPtr, System.Web.RequestNotificationStatus ByRef)

Microsoft.Win32.Win32Native.ReadFile(Microsoft.Win32.SafeHandles.SafeFileHandle, Byte*, Int32, Int32 ByRef, IntPtr)

All operations All functions in all operations (excludes boiler-plate functions) System.Threading.Monitor.ObjWait(Boolean, Int32, System.Object) System.Threading.WaitHandle.WaitOneNative(System.Runtime.InteropServices.SafeHandle, UInt32, Boolean, Boolean) System.Threading.Thread.SleepInternal(Int32) System.Threading.WaitHandle.WaitMultiple(System.Threading.WaitHandle[], Int32, Boolean, Boolean) System.Web.Hosting.UnsafeIISMethods.MgdIndicateCompletion(IntPtr, System.Web.RequestNotificationStatus ByRef) Microsoft.Win32.Win32Native.ReadFile(Microsoft.Win32.SafeHandles.SafeFileHandle, Byte*, Int32, Int32 ByRef, IntPtr)

Please help and recommend steps for resolution. Thanks

Take a look at: http://stackoverflow.com/questions/13135452/performance-issues-with-transferrequesthandler-and-beginrequest — Aristos, Apr 13 '14 at 18:23
Switching off the SessionState for most pages did the trick. — manishKungwani, Apr 15 '14 at 06:01

score 0 · Accepted Answer · answered Apr 15 '14 at 06:05

0

Mark EnableSessionState="False" on most pages or use a custom SessionState Module.

answered Apr 15 '14 at 06:05

manishKungwani

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If you solve it base on my answer, is better at least write the reason of the problem (from the moment that you self answer your problem) – Aristos Apr 15 '14 at 06:54
Actually I couldn't get the exact reason behind it. I wasn't using session object anywhere, except a couple of pages. Even then the Timeout happened on almost all my pages, I had already looked at those posts, so it wasn't new to me, but I thank you for your effort. In the end, I got it to work, but the generic explanation for the cause is all I have. – manishKungwani Apr 15 '14 at 10:09

how to resolve high CPU usage and crash for asp.net application caused by System.Web.Handlers.TransferRequestHandler?

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