If I instrument the code I get results.
If I sample I get: PRF0025: No data was collected.
Everything is defaults, except I set the clock sample interval to minimum
value.
It's a trivial MFC console app (see below). I used it, because I could not
get a very structurally complex example of an unmanged application to work!
The environment i need to evaluate has mixed managed, unmanged, and mixed
applications.

Running on a DELL M90 with the 180 day evaluation of VSTS.

#include "stdafx.h"
void Sub1(int i) {
    for (int j = i; j < 20000; j++) {
        double y = sqrt((double) j);
    }
}

int _tmain(int argc, _TCHAR* argv[]) {
    for (int i = 0; i < 10000; i++) {
        Sub1(i);
    }
    return 0;
}