trace Slow UAC with xperf

 Install the Windows Performance Toolkit (http://social.technet.microsoft.com/wiki/contents/articles/4847.install-the-windows-performance-toolkit-wpt.aspx), open the command prompt with admin rights.


Now copy those commands in an empty .CMD file and run the CMD (as admin) before you try to open a UAC prompt again:

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xperf -on BASE+LATENCY+DISPATCHER+FILE_IO+FILENAME -stackwalk profile+CSwitch+ReadyThread+ProcessCreate+FileCreate+FileCleanup+FileClose+FileRead+FileWrite -buffersize 2048 -MaxFile 1024 -FileMode Circular -f Kernel.etl
xperf -start UserLogger -on Microsoft-Windows-RPC:::'stack'+Microsoft-Windows-LUA:::'stack' -BufferSize 2048 -f User.etl

timeout -1

xperf -stop
xperf -stop UserLogger

xperf -merge User.etl kernel.etl SlowUAC.etl

del user.etl
del kernel.etl
/////////////////


If you have captured the UAC slowness, press a key to stop tracing.

Compress the SlowUAC.etl as 7z/RAR (to reduce the size), upload it (Onedrive, Dropbox) and paste a link here.