On Tue, Apr 13, 2010 at 09:20:23AM +0100, Simon Hobson wrote: > Stefan M. Brandl wrote: > >Hi there, > >I want to create a rrd-database starting at Friday Feb. 26 2010 and have > >a step of one week. > >If I do > > > >rrdtool create test.rrd --start 1267056000 --step 604800 > >DS:test:GAUGE:604800:0:U RRA:AVERAGE:0.5:1:100 > > > >the resulting rrd starts at Thursday Feb. 25. > >Regardless how I set the start-date, it is always set to Thursday. > >What am I doing wrong here? >
First of all, the above example is wrong. --start should be 1267142400. > Timezone ? > Seems not to be the problem. If I set the start-date 3600 seconds higher or 3600 seconds lower, the result is always the same. Startdate is always set to 1267056000 (look in the resulting rrd-dump). > Your email says +2 (European summer time ?), so midnight by your > clock is 22:00 UTC. RRCTool only uses UTC. > > In any case, the start time in an RRD file is largely irrelevant. Why? I want a 1 week interval with data inserted every friday. > Once you've done a single update, then that will set the minimum time > for a future update, and the start time of each consolidated data set > will be determined by the step time, number of PDPs per CDP, and the > number of CDPs to keep. > Yes, this should be correct, but I always ad the data at a friday. If I dump the database, it look like I have stored the data 24h earlier, this is not nice. Stefan _______________________________________________ rrd-users mailing list [email protected] https://lists.oetiker.ch/cgi-bin/listinfo/rrd-users
