RRD 函数

Table of Contents

• 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_version — Gets information about underlying rrdtool library
• rrd_xport — Exports the information about RRD database
• rrdc_disconnect — Close any outstanding connection to rrd caching daemon