The Performance Co-Pilot (PCP) is an open source toolkit designed for monitoring and managing system-level performance. These services are distributed and scalable to accommodate the most complex system configurations and performance problems.

PCP supports many different platforms, including (but not limited to) Linux, MacOSX, FreeBSD, IRIX, Solaris and Windows (Win32). From a high-level PCP can be considered to contain two classes of software utility:

- PCP Collectors. These are the parts of PCP that collect and extract performance data from various sources, e.g. the kernel or a database. These are available from http://pcp.io/ .

- PCP Monitors. These are the parts of PCP that display data collected from hosts (or archives) that have the PCP Collector installed. Many monitor tools are available as part of PCP. Other monitoring tools are available separately, such as pmchart, in layered packages that build on the core PCP functionality.