Hi, Can anyone help explain this? I have an RRD for my network traffic. I get the counter value from SNMP, and plot using the graph function I posted earlier today. Note: this is not to do with moving averages, it's a plotting problem.
I'm finding that when I reboot, the graphs I get are fouled up. An example of what the graph looks like before and after reboot is here: http://www.wells.org.uk/rrdtools/before.png http://www.wells.org.uk/rrdtools/after.png I'm assuming that when the counter goes back to zero (after the reboot), the fact that it's a counter implies to rrdtool update that something has overflowed. Unfortunately, my graph doesn't recover! :-( Any ideas? Here is the command I used to create the rrd in the first place: #/bin/sh rrdtool create rl0.rrd \ DS:input:COUNTER:3600:U:U \ DS:output:COUNTER:3600:U:U \ RRA:AVERAGE:0.5:1:600 \ RRA:AVERAGE:0.5:6:700 \ RRA:AVERAGE:0.5:24:775 \ RRA:AVERAGE:0.5:288:797 \ RRA:MAX:0.5:1:600 \ RRA:MAX:0.5:6:700 \ RRA:MAX:0.5:24:775 \ RRA:MAX:0.5:288:797 And here is the update command: /usr/local/bin/rrdtool update rl0.rrd N:$rl0in:$rl0out ...where $rl0in and $rl0out are obtained from these SNMP MIBs: interfaces.ifTable.ifEntry.ifInOctets.3 interfaces.ifTable.ifEntry.ifOutOctets.3 Both are integers, and I poll them every few minutes. If I reset the RRDs (and throw away all old data), everything works again. I have found these behaviour happens every time I reboot, and is consistently the same. Thomas, help! :-) Thanks Michael -- Unsubscribe mailto:[EMAIL PROTECTED] Help mailto:[EMAIL PROTECTED] Archive http://www.ee.ethz.ch/~slist/rrd-users WebAdmin http://www.ee.ethz.ch/~slist/lsg2.cgi
