3 rrdinfo - extract header information from an RRD
7 B<rrdtool> B<info> I<filename.rrd>
11 The B<info> function prints the header information from an RRD in
12 a parsing friendly format.
14 Check L<rrdcreate> if you are uncertain about the meaning of the
19 This is the output generated by running B<info> on a simple RRD which
20 contains two data sources and one RRA. Note that the number after the
21 I<last_update> keyword is in seconds since 1970. The string B<NaN>
22 stands for I<*UNKNOWN*> data. In the example it means that this RRD
23 has neither minimum nor maximum values defined for either of its
26 filename = "random.rrd"
29 last_update = 955892996
31 ds[a].minimal_heartbeat = 600
34 ds[a].last_ds = "UNKN"
35 ds[a].value = 2.1824421548e+04
38 ds[b].minimal_heartbeat = 600
41 ds[b].last_ds = "UNKN"
42 ds[b].value = 3.9620838224e+03
45 rra[0].pdp_per_row = 1
46 rra[0].cdp_prep[0].value = nan
47 rra[0].cdp_prep[0].unknown_datapoints = 0
48 rra[0].cdp_prep[1].value = nan
49 rra[0].cdp_prep[1].unknown_datapoints = 0
55 The name of the B<RRD> you want to examine.
61 Tobias Oetiker E<lt>oetiker@ee.ethz.chE<gt>