No sampling data on Windows

When profiling on Windows, it can happen that the resulting profile does not contain any sampling data, which Superluminal will warn you about when opening the capture. This is typically caused by an issue with the system timer interrupt on your system, which is used by Event Tracing for Windows (ETW) to gather sampling data.

The most common cause for this is that other profilers like Intel® VTune™, Intel® GPA or AMD μProf take over the system timer interrupt in certain cases, which will cause ETW’s sampling engine to stop working. If you’ve used one of these profilers in the current session, just reboot your system to free the system interrupt.

If this doesn’t solve it for you, or if you have any questions or remarks concerning this issue, please contact us.