oprofile

OProfile is a system-wide profiler for Linux systems, capable of profiling all running code at low overhead. OProfile is released under the GNU GPL. It consists of a kernel module and a daemon for collecting sample data, and several post-profiling tools for turning data into information. OProfile leverages the CPU hardware performance counters to enable profiling of a wide variety of interesting statistics, which can also be used for basic time-spent profiling. All code is profiled: hardware and software interrupt handlers, kernel modules, the kernel, shared libraries, and applications (the only exception being the oprofile interrupt handler itself). OProfile is currently in alpha status; however it has proven stable over a large number of differing configurations. As always, there is no warranty. This is the package containing the userspace tools.