Another post from someone probably not understanding consolidation functions ! I thought I did until I switched my trend to show MAX instead of average.
I measure the power used and trend kwh. At midnight, my read script resets and just feeds into rrrd an ever increasing number (accumulated kwh) throughout the day so as to produce a saw tooth pattern. Works great, however when I trend the MAX, I "assumed" I would see the maximum value for the 24 hr period. I think this was the script I used to create the rrd rrdtool create /var/rrd/kw.rrd --start 1167177600 --step 600 DS:P1:GAUGE:1300:0:100 RRA:AVERAGE:0.5:1:1440 RRA:AVERAGE:0.5:4:2160 RRA:AVERAGE:0.5:12:8760 RRA:MIN:0.5:288:1825 RRA:MAX:0.5:288:1825 The trend can be viewed at www.rjconway.homeip.net <http://www.rjconway.homeip.net/> select [Power] radio button for kwh and redraw, you will see the saw tooth, now select [max] . It seems to be giving one max value per two days value changing at midday not midnight. My controls only work in IE, (I broke firefox) Rob australia
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