Monitoring thread performance

[Salem]

I'm trying to profile a system with a number of threads.

If I look at the process/threads using process explorer (from sysinternals), I can see a thread context switch rate, and a total number of context switches.

Finding the switch rate through WMI seems easy enough.
But the total number of context switches - mmm, tricky.

Several hours with the Thread API on MSDN didn't help, except to suggest some deprecated API, and that didn't go into enough detail to help either.

I figured the information was easy enough to collect, and there must be some way to get at it since PE does.

Thanks for any insight,

[VirtualAce]

This is a site dedicated to hidden API functions and/or functions that are not in the SDK docs.

http://undocumented.ntinternals.net/

Hope it helps.

[Alex31]

This is a site dedicated to hidden API functions and/or functions that are not in the SDK docs.

http://undocumented.ntinternals.net/

Hope it helps.

There is nothing undocumented.
It's a (sadly well-known...) poor site.
Just read Wine or ReactOS source, and you'll get 10 x more apis.

[VirtualAce]

I've used that site to call functions that were not in the SDK docs and they worked fine. Granted I would not rely on them since they are not officially supported and could change at any time.

[BobS0327]

Possibly use the PDH library to create a performance counter for acquiring the number of system/context switches or thread/context switches??????

EDIT: Maybe this link can be of some help to you. Especially, the source code example.