Today Pablo Chacin wrote: > Greetings all > > I'm new to rrdtools. I'm actually still evaluating it as as tool for > storing monitoring metrics. > After reading the documentation and several discussions in this list and > also in other forums > I'm still confused about a couple of things. > 1. How are subsecond timestamt reported? In several places it is > mentioned the existence of these timestamps, but can't find any example > of how to specify it in the update command, except when using "N" as > timestamp.
rrdtool update 1351545246.3897:394.33 > 2. Supposing subsecond timestamps are supported by rrdtools, are they > also supported by rrdcached? I think the version on github does support it ... the released version not. > > 3. Finally, is there any patch to add SUM function for totalizing a > metric over a period. This is a very important requirement as we need to > count the total number of certain events for minute, hour and day. I'm > aware of the approach of using the average and multiplying by the > reporting period, but this will lead to a approximated value. everything in rrdtool is a 'rate' so even if there was such a function the math would still be the same ... can yo elaborate in what way you expect the result of the calculation to be an aproximation? > Even when > I understand the concerns about it not working properly in all > situations, I think is a very common requirement. Simply can't believe > nobody has done this ever, unless I'm completely wrong about the need of > such function. cheers tobi > many thanks in advance > > > -- Tobi Oetiker, OETIKER+PARTNER AG, Aarweg 15 CH-4600 Olten, Switzerland http://it.oetiker.ch t...@oetiker.ch ++41 62 775 9902 / sb: -9900 _______________________________________________ rrd-users mailing list rrd-users@lists.oetiker.ch https://lists.oetiker.ch/cgi-bin/listinfo/rrd-users