To try find out asp.net performance leak/locks or why my .net app is slow on multiple requests :) ?

1.take memory dump and load it in windbg with "sos" as described  here.
Then you can load sos commands .cmdtree c:\debuggers\cmdtree.txt
3.Evaluate clr stacks for all threads by  ~* e !clrstack  
or by selecting Stacs/All managed Stacks from Sos Commands menu window.
as result you will see  call stack lists,similar stacks like for memory dump.
4.Look for System.Threading.Monitor.Enter or System.Threading.Monitor.Exit in page load stacks , that might indicate that static object is using 
that might cause slow performance for multiple requests.

5.to monitor sysncBlock use !syncblk commad
it will show who owns the lock and how many people waiting for it in "MonitorHeld" column.

"Info" column will  - contains thread number [thr] that locking, use  this commands:  
~[thr]s 
!clrstack 
to display locking stack and which give you a chance to  locate which procedure holding it. 

also debugging and preview of dump files will be available in Visual studio 2010.

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