This guide describes how to program Performance Co-Pilot (PCP), a software package of advanced performance management applications for the SGI family of graphical workstations and servers. PCP provides a systems-level suite of tools that cooperate to deliver distributed, integrated performance monitoring and performance management services spanning the hardware platform, the operating system, service layers, user applications, and distributed application architectures.
This guide contains the following chapters:
Chapter 1, “Programming Performance Co-Pilot”, contains a thumbnail sketch of how to program the various PCP components.
Chapter 2, “Writing a PMDA”, describes how to write Performance Metrics Domain Agents (PMDAs) for PCP.
Chapter 3, “PMAPI--The Performance Metrics API”, describes the interface that allows you to design custom performance monitoring tools.
Chapter 4, “Trace PMDA”, provides an introduction to the design of the trace Performance Metrics Domain Agent (PMDA).
Appendix A, “Acronyms”, provides a comprehensive list of the acronyms used in this guide, in the PCP man pages, and in the release notes.
The guide describes the programming interfaces to Performance Co-Pilot (PCP) for the following intended audience:
Performance analysts or system administrators who want to extend or customize performance monitoring tools available with PCP
Developers who need to integrate their applications into the PCP framework
This book is written for those who are competent with the C programming language, the UNIX operating system, and the target domain from which the desired performance metrics are to be extracted. Familiarity with the PCP tool suite is assumed.
The Performance Co-Pilot User's and Administrator's Guide, which is a companion document to the Performance Co-Pilot Programmer's Guide, is intended for system administrators and performance analysts who are directly using and administering PCP applications.
Additional resources include man pages, release notes, and SGI Web sites.
The IRIX man pages provide concise reference information on the use of IRIX commands, subroutines, and system resources. There is usually a man page for each PCP command or subroutine. To see a list of all the PCP man pages, enter the following command:
man -k performance |
To see a particular man page, supply its name to the man command, for example:
man pcp |
The man pages are divided into the following seven sections:
| (1) | General commands |
| (2) | System calls and error numbers |
| (3) | Library subroutines |
| (4) | File formats |
| (5) | Miscellaneous |
| (6) | Demos and games |
| (7) | Special files |
When referring to man pages, this guide follows a standard UNIX convention: the section number in parentheses follows the item. For example, pmda(3) refers to the man page in section 3 for the pmda command.
Release notes provide specific information about the current product release, available online through the relnotes command. Exceptions to the printed and online documentation are found in the release notes. The grelnotes command provides a graphical interface to the release notes of all products installed on your system. For additional information, see the relnotes(1) and grelnotes(1) man pages.
The following Web sites are accessible to everyone with general Internet access:
| URL | Description |
| http://www.sgi.com | The SGI general Web site, with search capability |
| http://www.sgi.com/software | Links to Performance Co-Pilot product information |
| http://oss.sgi.com/projects/pcp | Some parts of the PCP infrastructure that have also been released as open source |
To obtain SGI documentation, go to the SGI Technical Publications Library at:
http://techpubs.sgi.com. |
The following conventions are used throughout this document:
| Convention | Meaning | |
| command | This fixed-space font denotes literal items such as commands, files, routines, path names, signals, messages, and programming language structures. | |
| variable | Italic typeface denotes variable entries and words or concepts being defined. | |
| user input | This bold, fixed-space font denotes literal items that the user enters in interactive sessions. Output is shown in nonbold, fixed-space font. | |
| [ ] | Brackets enclose optional portions of a command or directive line. | |
| ... | Ellipses indicate that a preceding element can be repeated. | |
| ALL CAPS | All capital letters denote environment variables, operator names, directives, defined constants, and macros in C programs. | |
| () | Parentheses that follow function names surround function arguments or are empty if the function has no arguments; parentheses that follow IRIX commands surround man page section numbers. |
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