Before using VTune, should I close System process and user process....

[mayankaecgmail_com]

I am using VTune to profle an application. When I have closed User processes and System Processes in Windows Task Manager what analysis showing in VTune is different from when I have closed only user process. So, I want to ask that should I close both System Processes and User Processes or only User processes.Please reply me as soon as possible...

Thanks In advance

Mayank prabhakar

[Peter_W_Intel]

As I replied to you in other thread, other user processes and system processes will consume CPU time...so if you can close some high CPU usage processes (unused) - that will be fine.

Another suggestion is to use VTune Amplifier XE command line instead of GUI, sometime reduce overhead caused by the tool.

Thanks, Peter

[Peter_W_Intel]

Another reminder is to invoke amplxe-gui or amplxe-cl as administrator - so highly accurate CPU time fordata collector will be used, that is for user-mode data collection (hotspots analysis, concurrency analysis, locksandwaits analysis). -Peter