Windows Performance Toolkit (WPT)

This is a follow-up to my earlier article Bluetooth Audio Quality & aptX on Windows 10, based on a comment by reader eluxe. Windows makes it unnecessarily hard to identify the audio codec used by the Bluetooth A2DP profile, but there is a way. This post shows how to check if your connection makes use of aptX, LDAC, or some other more advanced codec, or if it falls back to SBC.

Let use take a look at some graphs I created with Windows Performance Analyzer (WPA), showing a typical corporate laptop boot Windows 7. Detailed information on creating such a trace can be found in my earlier article Analyzing a Slow Boot with Windows Performance Recorder & Analyzer.

In the last five years Xperf has gained popularity as an administrator’s secret weapon for battling all kinds of performance issues. But just when it was on the brink of becoming as mainstream as such a tool can be, Microsoft superseded it by something else: Windows Performance Recorder.