The RRD files are created automatically with the following RRAs:
+ RRA:AVERAGE:0.0:1:1500
RRA:AVERAGE:0.2:6:1500
RRA:AVERAGE:0.1:180:1680
RRA:AVERAGE:0.1:2160:1520
+ RRA:MIN:0.0:1:1500
RRA:MIN:0.2:6:1500
RRA:MIN:0.1:180:1680
RRA:MIN:0.1:2160:1520
+ RRA:MAX:0.0:1:1500
RRA:MAX:0.2:6:1500
RRA:MAX:0.1:180:1680
RRA:MAX:0.1:2160:1520
-Since collectd uses a 10 second I<step> the RRAs contain the following
-timespans:
+By default collectd uses a 10 second I<step>. Thus the RRAs contain the
+following timespans. If you've changed the I<step> at compile time you will
+have calculate resolution and timespan yourself.
- Resolution | Data points | Timespan
- -----------+-------------+----------
- 60 seconds | 1500 | 25 hours
- 30 minutes | 1680 | 35 days
- 6 hours | 1520 | 380 days
+ PDP per CDP | Resolution | Data points | Timespan
+ ------------+------------+-------------+----------
+ 1 | 10 seconds ! 1500 ! 4 hours
+ 6 | 1 minute | 1500 | 25 hours
+ 180 | 30 minutes | 1680 | 35 days
+ 2160 | 6 hours | 1520 | 380 days
The DS'es depend on the module creating the RRD files: