Hi all, I'd like Cacti 0.8.3 and RRDtool 1.0.39 to store and graph ***exactly*** the value that it gets as its input.
I am using a GAUGE data type and the LAST consolidation function. This is what the Cacti log is showing (thus, these are the values I'd like to see in the graphs): 09/22/2003 9:40 AM - CMD: /opt/rrdtool/bin/rrdtool update /var/www/html/cacti/rra/RTTSum-rtr_1.rrd --template RTTSum N:4726 09/22/2003 9:45 AM - CMD: /opt/rrdtool/bin/rrdtool update /var/www/html/cacti/rra/RTTSum-rtr_1.rrd --template RTTSum N:4102 09/22/2003 9:50 AM - CMD: /opt/rrdtool/bin/rrdtool update /var/www/html/cacti/rra/RTTSum-rtr_1.rrd --template RTTSum N:4891 09/22/2003 9:55 AM - CMD: /opt/rrdtool/bin/rrdtool update /var/www/html/cacti/rra/RTTSum-rtr_1.rrd --template RTTSum N:3855 09/22/2003 10:00 AM - CMD: /opt/rrdtool/bin/rrdtool update /var/www/html/cacti/rra/RTTSum-rtr_1.rrd --template RTTSum N:4724 And these are the values that are stored in the round robin database (output of the "rrdtool fetch" command): 1064216400: 4.7134000000e+03 1064216700: 4.1144800000e+03 1064217000: 4.8725900000e+03 1064217300: 3.8722666667e+03 1064217600: 4.7066200000e+03 1064217900: nan As you can see there is a slight difference between what Cacti reports and what rrdtool stores/graphs (in fact, each value differs towards its preceding value). I quote Alex van den Bogaerdt's RRDtool tutorial at http://people.ee.ethz.ch/~oetiker/webtools/rrdtool/tutorial/rrdtutorial.html: "We can tell RRDtool to store the values we measure directly as they are (this is not entirely true but close enough)." Does this mean that RRDTool does not/cannot store values in its raw form, even if using GAUGE data types? Is it correct that RRDTool is doing some time compensation even for GAUGE data types (which to my latest understanding are not related to time?) Might any other averaging mechanism fool me here? Thanks, David PS: I have raised this issue in the Cacti forum before and am now switching over here. -- 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
