Hi everyone, I am learning rrdtool.
I try with that step parameter value is 5: rrdtool create test.rrd -b 1397188169 -s 5 DS:mem:GAUGE:1000:0:2000 RRA:AVERAGE:0.5:1:5 rrdtool updatev test.rrd 1397188170:1 I got this output: [1397188170]RRA[AVERAGE][1]DS[mem] = NaN You see, the time of first pdp is 1397188170, though I set the step value is 5, it is not 5 seconds after the begin time, but only second after the begin time. then I also try，with only different step parameter value which is set to 4, and anything else the same as above. rrdtool create test2.rrd -b 1397188169 -s 4 DS:mem:GAUGE:1000:0:2000 RRA:AVERAGE:0.5:1:5 rrdtool updatev test2.rrd 1397188170:1 just get "return_value = 0" then rrdtool updatev test2.rrd 1397188171:1 just get "return_value = 0" then rrdtool updatev test2.rrd 1397188172:1 finally get "[1397188172]RRA[AVERAGE][1]DS[mem] = 1.0000000000e+000" In this second test, the time of first pdp is 1397188172. Still, though I set step value is 4, it is still not 4 seconds after the begin time, but 3 seconds after the begin time I try many other step value, I just can't find any rules about how to determine the time of first pdp. I got crazy! Thanks in advance! -- View this message in context: http://rrd-mailinglists.937164.n2.nabble.com/How-to-compute-first-pdp-time-tp7581934.html Sent from the RRDtool Users Mailinglist mailing list archive at Nabble.com. _______________________________________________ rrd-users mailing list [email protected] https://lists.oetiker.ch/cgi-bin/listinfo/rrd-users
