RRDtool

• Introduction
• Installing/Configuring
  • Requirements
  • Installation
  • Runtime Configuration
  • Resource Types
• Predefined Constants
• Examples
  • Procedural PECL/rrd example
  • OOP PECL/rrd example
• RRD Functions
  • rrd_create — Creates rrd database file
  • rrd_error — Gets latest error message.
  • rrd_fetch — Fetch the data for graph as array.
  • rrd_first — Gets the timestamp of the first sample from rrd file.
  • rrd_graph — Creates image from a data.
  • rrd_info — Gets information about rrd file
  • rrd_last — Gets unix timestamp of the last sample.
  • rrd_lastupdate — Gets information about last updated data.
  • rrd_restore — Restores the RRD file from XML dump.
  • rrd_tune — Tunes some RRD database file header options.
  • rrd_update — Updates the RRD database.
  • rrd_xport — Exports the information about RRD database.
• RRDCreator — The RRDCreator class
  • RRDCreator::addArchive — Adds RRA - archive of data values for each data source.
  • RRDCreator::addDataSource — Adds data source definition for RRD database.
  • RRDCreator::__construct — Creates new RRDCreator instance
  • RRDCreator::save — Saves the RRD database to a file
• RRDGraph — The RRDGraph class
  • RRDGraph::__construct — Creates new RRDGraph instance
  • RRDGraph::save — Saves the result of query into image
  • RRDGraph::saveVerbose — Saves the RRD database query into image and returns the verbose information about generated graph.
  • RRDGraph::setOptions — Sets the options for rrd graph export
• RRDUpdater — The RRDUpdater class
  • RRDUpdater::__construct — Creates new RRDUpdater instance
  • RRDUpdater::update — Update the RRD database file