> > Hi, > > > > we use rrd to get an overview of our server farm. Every data point > > that is monitored (disk usage, cpu, mem, temp., iops, bandwidth and so > > on) gets written to rrd (and then gets visualized via drraw). > > > > Every now and then we get some timeout from the monitoring system > > (read: a missing data point), but i’m unable to implement this in RRD. > > > > Minimal compiling sample: > > > > ---------------------------------------------------------------------- > > --------- > > rm test.rrd > > rrdtool create test.rrd --step 300 --start 1477432800 > > DS:testds:GAUGE:300:U:U RRA:LAST:0:1:10 rrdtool update test.rrd > > 1477433100:12 rrdtool update test.rrd 1477433400:13 rrdtool update > > test.rrd 1477433700:15 > > # rrdtool update test.rrd 1477434000:NaN # here is a missed measuring > > point > > rrdtool update test.rrd 1477434300:8 > > rrdtool update test.rrd 1477434600:12 > > ---------------------------------------------------------------------- > > --------- > > > > As you can see, the data point for the timestamp 1477434000 will not > > be written to rrd, but the following data point is available, again. > > You are not writing points, you are writing rates which are measured during > some interval. > The rate "8" is for time 1477433700..1477434300. This is however not allowed > because of your heartbeat setting and gets lost. > > What happens if you do update at time 1477434000, using value U ? > >
Hi, thanks for the quick Reply! If i insert the missing value for timestamp 1477434000 with U, everything is OK. But this is not really the desired (my desired) behaviour. I'd expect a missing point or rate for one interval to be stored as one missing interval. Not two. Or am I misunderstood the whole thing? Best regards, Friedhelm CEWE Stiftung & Co. KGaA mit Sitz in Oldenburg; Registergericht Oldenburg HR B 208214; Persönlich haftende geschäftsführende und vertretungsberechtigte Gesellschafterin: Neumüller CEWE COLOR Stiftung, Sitz: Oldenburg; Stiftungsverzeichnis der rechtsfähigen Stiftungen des bürgerlichen Rechts im Bezirk der Regierungsvertretung Oldenburg Nummer 15(034). Stiftungsvorstand: Dr. Rolf Hollander (Vorsitzender), Patrick Berkhouwer, Dr. Reiner Fageth, Dr. Christian Friege, Carsten Heitkamp, Dr. Olaf Holzkämper, Thomas Mehls, Frank Zweigle Aufsichtsrat: Otto Korte (Vorsitzender) UST ID-Nr. DE815453806; St.-Nr. 64/200/38999; GLN 40 04468 00000 4 _______________________________________________ rrd-users mailing list rrd-users@lists.oetiker.ch https://lists.oetiker.ch/cgi-bin/listinfo/rrd-users
