As PIX analyzes the target program, it generates two kinds of data files:
When the experiment is finished collecting data (stopping according to values you set in the experiment), open and display the PIXRun or image file data using PIX's File menu or by dragging the file onto the PIX main window. In many cases, PIX will open the PIXRun file automatically when the experiment ends.
PIX is not meant for capturing the actual times for API calls; to get actual API timings, use an instrumented profiling tool.
An instrumenting profiler is a useful tool for measuring the amount of CPU time it takes to execute an API call. PIX should not be used as an instrumentation profiler. This is because Direct3D calls are batched up and sent to a command buffer. This makes profiling more difficult. If you want to collect instrumented profiling data, use a tool such as VTune.