Hi,recently i had to check my PC for problems and i also used the DPC Latency checker, which is a very nice tool, but unfortunately only useful as a very vague indicator for problems.Fortunately i found this nice blog: http://blogs.msdn.com/peterwie/archive/200...g-dpc-time.aspx ...which is describing the usage of the Windows Performance Toolkit.Unfortunately i was only able to find WPT 4.1.1, which isn't supposed to work with Windows 7...The WPT version 4.6 was the version i needed and it seems to be only availabe with the Windows 7 SDK... fortunately (somebody who i don't know) has uploaded the WPT 4.6 to Mediafire.com:for Win7 64bit: http://www.mediafire.com/?nn0ryumzmnifor Win7 32bit: http://www.mediafire.com/?cxmyfmfymjzIt's really a fantastic tool which is very useful to isolate sources of problems (real or imaginary problems..).Nils

Hi,recently i had to check my PC for problems and i also used the DPC Latency checker, which is a very nice tool, but unfortunately only useful as a very vague indicator for problems.Fortunately i found this nice blog: http://blogs.msdn.com/peterwie/archive/200...g-dpc-time.aspx ...which is describing the usage of the Windows Performance Toolkit.Unfortunately i was only able to find WPT 4.1.1, which isn't supposed to work with Windows 7...The WPT version 4.6 was the version i needed and it seems to be only availabe with the Windows 7 SDK... fortunately (somebody who i don't know) has uploaded the WPT 4.6 to Mediafire.com:for Win7 64bit: http://www.mediafire.com/?nn0ryumzmnifor Win7 32bit: http://www.mediafire.com/?cxmyfmfymjzIt's really a fantastic tool which is very useful to isolate sources of problems (real or imaginary problems..).Nils

Did it help you solve any problems or improve your system performance?

Did it help you solve any problems or improve your system performance?

Yes it helped me to find the cause for some occasional spikes which DPC Latency checker has shown. That's why i'm posting it here.Now everything is green because i was able to see what was happening and that was completely different than what i would have thought.It's a great analysis tool with which you can get a true picture of what is happening, while DPC checker shows you only that there are problems.Simply start the tool (xperf), do whatever you have done the last time you have seen any spikes, stop the tool after a while and view the diagramms with xperfview.Then you can select an area of interest and display the summary table or you can overlay the graphs.