Hi Alex On Thu, 27 May 2004 13:57:09 +0200 Alex van den Bogaerdt wrote:
> On Thu, May 27, 2004 at 11:08:24AM +0100, John Murdoch wrote: > > > This does seem logical... but my other, more granular data is in a 15 min > > (--step 900) RRD, so updating at noon-only is impossible if I stay with the > > same RRD. :( I am guessing this is the cause of why MIN/MAX points are > > represented as continuous lines for the whole day. Should I construct a > > seperate RRD to hold the noon-based data? (see below for my DS/RRD layout) > > I have a database with a one-second granularity. I sometimes update > this database twice a day. No problem. Just make sure heartbeat > allows it. Yes, I checked this, but it would mean having to find a way to calculate the average and re-insert it. No matter - the horizontal lines are actually clearer on larger timescales. :) > > Hmmm... this is puzzling me (using RRDtool 1.0.47). I've tried plotting the > > two different AVERAGES, but rrdtool graph seems to just pick the most > > relevant to the timescale and plots that twice. Here's my RRD layout (every > > 15 mins for 3 years): > > "DS:users:GAUGE:1700:0:U", "RRA:AVERAGE:0.5:1:105120", > > "RRA:AVERAGE:0.75:96:1095", "RRA:MIN:0.75:96:1095", "RRA:MAX:0.75:96:1095" > > OK, when you try to fetch the RRAs from the same RRD it will currently fail. > > Rephrase: > <AFAIK> > You _can_ graph data from different RRAs on the same graph. In order to > aquire the data you need to fetch them from different RRDs. > </AFAIK> > > But make sure you test this before you rely on what I say. Didn't get round to testing this. Mainly beacuse I found out how to get alternative AVERAGE RRAs to display by utilising the '--step' option for rrdgraph... it was quite far down the documentation (I reckon it isn't a widely used thing in 'graph' compared to 'update'). Thanks for your help, John -- Unsubscribe mailto:[EMAIL PROTECTED] Help mailto:[EMAIL PROTECTED] Archive http://www.ee.ethz.ch/~slist/rrd-users WebAdmin http://www.ee.ethz.ch/~slist/lsg2.cgi
