I'm just setting up logging for the new UPS at work, and looking at teh SNMP MIB I see that it has entries for "The maximum utility line voltage in 0.1 VAC for last 1 minute." and "The minimum utility line voltage in 0.1 VAC for last 1 minute." as well as plain input voltage. I'm not really interested in logging voltage in small detail, but I would be interested in having max and min.
So if I were collecting data once a minute, and only graphing at 5 minute resolution, is there an easy way to get the min and max values into the RRD ? The only way I can think of is to set step to 1 (with suitably long heartbeat), and do 3 (or 4 ?) updates in close succession. Ie, do updates for t:act, t+1:min, and t+2:max (where act is current voltage reported, and min/max are the "min/max over last minute" reported by the UPS) to set the actual value for the last 58s, then the min and max for 1s each. -- Simon Hobson Visit http://www.magpiesnestpublishing.co.uk/ for books by acclaimed author Gladys Hobson. Novels - poetry - short stories - ideal as Christmas stocking fillers. Some available as e-books. _______________________________________________ rrd-users mailing list [email protected] https://lists.oetiker.ch/cgi-bin/listinfo/rrd-users
