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Chapter 5. Performance Co-Pilot (PCP)
5.1. PCP Overview and Resources
Red Hat Enterprise Linux 7 provides support for Performance Co-Pilot (PCP), a suite of tools, services, and libraries for monitoring, visualizing, storing, and analyzing system-level performance measurements. Its light-weight distributed architecture makes it particularly well-suited for centralized analysis of complex systems. Performance metrics can be added using the Python, Perl, C++, and C interfaces. Analysis tools can use the client APIs (Python, C++, C) directly, and rich web applications can explore all available performance data using a JSON interface.
PCP allows:
- the monitoring and management of real-time data
- the logging and retrieval of historical data
You can use historical data to analyze patterns with issues by comparing live results with archived data.
The Performance Metric Collection Daemon (
pmcd
) is responsible for collecting performance data on the host system, and various client tools, such as pminfo
or pmstat
, can be used to retrieve, display, archive, and process this data on the same host or over the network. The pcp package provides the command-line tools and underlying functionality. The graphical tool requires the pcp-gui package.
For a list of system services and tools that are distributed with PCP, see Table A.1, “System Services Distributed with Performance Co-Pilot in Red Hat Enterprise Linux 7” and Table A.2, “Tools Distributed with Performance Co-Pilot in Red Hat Enterprise Linux 7”.
Resources
- The manual page named PCPIntro serves as an introduction to Performance Co-Pilot. It provides a list of available tools as well as a description of available configuration options and a list of related manual pages. By default, comprehensive documentation is installed in the
/usr/share/doc/pcp-doc/
directory, notably the Performance Co-Pilot User's and Administrator's Guide and Performance Co-Pilot Programmer's Guide. - For information on PCP, see the Index of Performance Co-Pilot (PCP) articles, solutions, tutorials and white papers on the Red Hat Customer Portal.
- If you need to determine what PCP tool has the functionality of an older tool you are already familiar with, see the Side-by-side comparison of PCP tools with legacy tools Red Hat Knowledgebase article.
- See the official PCP documentation for an in-depth description of the Performance Co-Pilot and its usage. If you want to start using PCP on Red Hat Enterprise Linux quickly, see the PCP Quick Reference Guide. The official PCP website also contains a list of frequently asked questions.