Is it possible to check how much cpu time context switching is taking on windows, or better yet, an .net process?
Windows – How to measure context switching overhead on windows
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Related Solutions
I've had success with Sysinternals Process Explorer. With this, you can search to find what process(es) have a file open, and you can use it to close the handle(s) if you want. Of course, it is safer to close the whole process. Exercise caution and judgement.
To find a specific file, use the menu option Find->Find Handle or DLL... Type in part of the path to the file. The list of processes will appear below.
If you prefer command line, Sysinternals suite includes command line tool Handle, that lists open handles.
Examples
c:\Program Files\SysinternalsSuite>handle.exe |findstr /i "e:\"(finds all files opened from drivee:\"c:\Program Files\SysinternalsSuite>handle.exe |findstr /i "file-or-path-in-question"
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Best Answer
Performance Monitor can be used to see the % processor time and # of context switches. The context switch counts are available in either:
Context switch overhead is low but if you see a much higher number at the same time as % processor time spikes then you can start troubleshooting what is occurring at that time. Other counters can help with narrowing down what the problem might be - for example Processor Queue Length.
Ref: TechNet Monitoring Context Switches
As well from another article on Context Switches: