Hi
In the thread "Rdd graphic spikes" over on -discuss it came to light
(I'd never looked) that OpenNMS only supports the GAUGE and COUNTER
datasource types in the RRD/JRobin backend.
This is given in the source code for 1.7.5 in
source/opennms-services/src/main/java/org/opennms/netmgt/collectd/PersistOperationBuilder.java line 64:
/**
* RRDTool defined Data Source Types NOTE: "DERIVE" and "ABSOLUTE" not
* currently supported.
*/
static final String DST_GAUGE = "GAUGE";
static final String DST_COUNTER = "COUNTER";
public static final int MAX_DS_NAME_LENGTH = 19;
Can I ask why it is that only those two DS types are supported?
It doesn't seem like it would require much of a patch (I'll try to knock
one together) to support it, but there must be some rationale behind the
comment...
Thanks!
Graeme
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