Hi all rrdTool users, I am using rrdTool to monitor a system that resets all its parameters to 0 whenever it crashes. The system has high traffic volume so the chance of variable overflow is high.
I am using the data type COUNTER to track the system parameters, but I am running into this problem: When the system restarts after a crash, all the new parameter readings will be smaller than the previous ones in the rrdtool database. So rrdtool will be tricked to think that a COUNTER overflow had occurred. The new values will be incorrectly displayed in the graph as many magnitudes greater. How do I get around this problem? Do I have to: 1) create new rrd database whenever the system crashes so the data in the DB remains fresh? (But I don't want to loose all the historic data.) 2) or use the data Type DERIVE to take into account for a negative rate (i.e. a reading drop), but DERIVE (and ABSOLUTE for that matter) does not have overflow protection that I desire. What would be the best approach to solve this problem? Much thanks in advance. Dave -- 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
