These two statistical profilers predate
perf. They are both subsets of the functionality of
perf, but they are still quite popular. I will mention them only briefly.
OProfile is a kernel profiler that started out in 2002. Originally, it had its own kernel sampling code, but recent versions use the
perf_events infrastructure for that purpose. There is more information about it at http://oprofile.sourceforge.net. OProfile consists of a kernel-space component and a user space daemon and analysis commands.
OProfile needs these two kernel options to be enabled:
CONFIG_PROFILINGin General setup | Profiling support
CONFIG_OPROFILEin General setup | OProfile system profiling
If you are using the Yocto Project, the user-space ...