Boot Profiler is a group of utilities that capture timing information at predefined profiling points from the beginning of the boot loader, through kernel loading, initialization, and startup. Profiling points can be defined in subsequent scripts.

Boot Profile timing information is taken from the monotonic microsecond counter in the CPU.

Boot Profiler includes these utilities:

These utilities are located on the host at:

The io-nvbootprofiler is the daemon that collects the boot timestamps from the bootloaders. It allows the software, that is running on QNX, to add more profile points. The io-nvbootprofiler daemon is loaded during the early stages of QNX boot, in the default IFS.

Once the system is running, use bootprofiler_get_results to see the captured profiling points. The syntax is:

The bootprofiler_get_results utility produces output similar to the following example:

The columns in the Boot Profiler report are as follows:

The example output reports the following information:

To create an additional profiling point, add the bootprofiler command to a script. The syntax is:

bootprofiler tells io-nvbootprofiler to capture a new profiling point and associate it with the specified profiling point name.