Hello, thanks for the hints!
> yes, that is the 'old' solution ... and it does work. but since > rrdtool is not even looking at coverage at the future end of the > range this does not matter any more ... that refers to actual versions of rrdtool!? unfortunately i`m locked to 1.2.23 , as i don`t have a clue how to get a more recent version for that platform. maybe i can update to 1.2.30 by switching to more recent openWRT build. (which is embedded linux for routers). Would that help,too? Anyway, regarding the modulo trick - i`m not sure if i got that right You mean like this ? export now=$(( `date +"%s"` - $((`date +"%s"` % 21600)) )) rrdtool .... --start end-1y --end $now .... (i`m using busybox date, where date +"%s" means seconds since epoch.) regards Roland -------------------------------------------------- From: "Tobias Oetiker" <[email protected]> Sent: Tuesday, September 28, 2010 11:12 PM To: "Alex van den Bogaerdt" <[email protected]> Cc: <[email protected]> Subject: Re: [rrd-users] weird behaviour of rrd graph > Today Alex van den Bogaerdt wrote: > >> > also note that recent rrdtool versions have become more 'stable' in >> > their choices ... by only looking to the past and not to the >> > present since all RRAs by definition cover the present to the best >> > of their abilities ... >> >> >> I'm not sure, but isn't this the same difference? >> >> now-1y will still sometimes be exactly on one RRA boundary, but usually >> not. >> Just as now does. >> >> I suggest Roland tries to compute current_time - (current_time modulo >> 21600) >> and use that instead of "now" to see if that makes a difference. I'm not >> going to bet on it, but it would sure be my first try. >> >> 2nd and 3rd try would be 262800 and 2628000 where I wrote 21600. > > yes, that is the 'old' solution ... and it does work. but since > rrdtool is not even looking at coverage at the future end of the > range this does not matter any more ... > > cheers > tobi > >> >> >> > > -- > Tobi Oetiker, OETIKER+PARTNER AG, Aarweg 15 CH-4600 Olten, Switzerland > http://it.oetiker.ch [email protected] ++41 62 775 9902 / sb: -9900 > > _______________________________________________ > rrd-users mailing list > [email protected] > https://lists.oetiker.ch/cgi-bin/listinfo/rrd-users _______________________________________________ rrd-users mailing list [email protected] https://lists.oetiker.ch/cgi-bin/listinfo/rrd-users
