[How to get the cause of high CPU usage by DPC / Interrupt]

you have to run the command prompt with admin rights (http://windows.microsoft.com/en-US/windows7/How-do-I-run-an-application-once-with-a-full-administrator-access-token)

Thank you. I have produced two tables (DPC CPU Usage Summary Table and Interrupt CPU Usage Summary Tables), saved as Excel CSV files. But then I read that you mentioned: "now wait a time while the high DPC and Interreupt usage occurs." Do you mean I should wait until the next time my CPU starts working furiously, causing delays, to run the second command to produce the summary tables? I have already run the first one: xperf -on latency and hopefully this is running now! (Pardon me - as mentioned before, I have no knowledge on these kind of issues...).

[How to get the cause of high CPU usage by DPC / Interrupt]

Hi,

I have been searching all over the place to find a layman's solution to stop this annoying system interrupt problem. Your solution seems the right approach and therefore I have (a) downloaded Web installer, selected Win32 Development Tools and installed them; (B) Ran wpt_x86.msi; © however, on running xperf –on latency, I got following error: "xperf: error: NT Kernel Logger: Access is denied. <0x5>". I don't know how to proceed. I admit, I am only a normal PC user without any specific expertise in hardware/ software/ programs and I would appreciate if you would please elaborate how to get over the obstacles.

Thank you for your time and help.

VDev

How to get the cause of high CPU usage by DPC (Deferred Procedure Call) and interrupts?