OS/2 Warp Version 4 applications can be instrumented for trace by adding calls to the TraceCreateEntry function to collect user-specified data. When running the program, the system collects specified data and stores the data in a trace file. Use the trace format (TRACEFMT) command discussed Analyzing Performance and Debugging Problems Using Trace to view and analyze the data stored in the trace file.
Using trace points is one of the best ways to collect serviceability information on a customer system. It allows service personnel and developers to follow the course of events that lead to the failure.