(PECL rrd >= 0.9.0)
RRDCreator::addDataSource — Adds data source definition into created RRD database.
A RRD can accept input from several data sources (DS), e.g incomming and outgoing traffic. This method adds data source by description of source. You need call this method for each data source.
Definition of data source - DS. This has same format as DS definition in rrd create command. See man page of rrd create for more details.
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