Hi, I use RRD::Simple to add new DS in an RRD.
I create the RRD with one DS: <ds> <name> tick </name> <type> GAUGE </type> <minimal_heartbeat>600</minimal_heartbeat> <min>0.0000000000e+00</min> <max>NaN</max> <!-- PDP Status --> <last_ds>1</last_ds> <value>1.0000000000e+00</value> <unknown_sec> 0 </unknown_sec> </ds> and very standards RRA: 'RRA:AVERAGE:0.5:1:600', 'RRA:AVERAGE:0.5:6:600', 'RRA:AVERAGE:0.5:24:600', 'RRA:AVERAGE:0.5:288:732' At each step, I enter the value 1 for DS "tick". As time goes, I add new DSs. -------- At 17:40 I add a new DS called "1": <ds> <name> 1 </name> <type> GAUGE </type> <minimal_heartbeat>600</minimal_heartbeat> <min>0.0000000000e+00</min> <max>NaN</max> <!-- PDP Status --> <last_ds>U</last_ds> <value>NaN</value> <unknown_sec> 1 </unknown_sec> </ds> and I enter the value 1 for DS "1"; in the first RRA, I get: <!-- 2012-11-22 17:40:00 ICT / 1353580800 --> <row><v>1.0000000000e+00</v> <v>9.9666666667e-01</v></row> -------- At 19:25 I add a new DS called "2": <ds> <name> 2 </name> <type> GAUGE </type> <minimal_heartbeat>600</minimal_heartbeat> <min>0.0000000000e+00</min> <max>NaN</max> <!-- PDP Status --> <last_ds>U</last_ds> <value>NaN</value> <unknown_sec> 1 </unknown_sec> </ds> and I enter the value 1 for DS "1" and DS "2"; in the first RRA, I get: <!-- 2012-11-22 19:25:00 ICT / 1353587100 --> <row><v>1.0000000000e+00</v> <v>1.0000000000e+00</v> <v>9.9666666667e-01</v></row> ------- So far so good.There is no other data entry. But when I look at the second RRA, I get: <!-- 2012-11-22 19:30:00 ICT / 1353587400 --> <row><v>1.0000000000e+00</v> <v>NaN</v> <v>1.9933333333e-01</v></row> While I would be expecting something along the line of: <!-- 2012-11-22 19:30:00 ICT / 1353587400 --> <row><v>1.0000000000e+00</v> <v>1.6666666666e-01</v> <v>1.6666666666e-01</v></row> as there have been only one entry of value 1 in DS "1" and DS "2" in the past 6 steps. It could be an artefact of RRD::Simple that seems not to be working so well. Help appreciated, Best regards, Olivier _______________________________________________ rrd-users mailing list rrd-users@lists.oetiker.ch https://lists.oetiker.ch/cgi-bin/listinfo/rrd-users