On Thu, Aug 07, 2003 at 04:00:45PM -0700, nate wrote: > rrdtool create filename.rrd --step 300 DS:idle:GAUGE:600:0:100 > RRA:LAST:0.5:1:200000 RRA:MIN:0.5:1:200000 RRA:MAX:0.5:1:200000 > RRA:AVERAGE:0.5:1:200000 > > I am interested in storing every data point collected for the > 200000 cycles, would just making an archive with LAST be sufficient:
Interpolation will kick in, unless your updates *always* happen on a time equalling n*300. > rrdtool create filename.rrd --step 300 DS:some_name:GAUGE:600:0:100 > RRA:LAST:0.5:1:200000 > > or do I also need archives for MIN MAX and AVERAGE as well? Will > RRD not be able to calculate averages if I only store the raw data > points? If you're going to graph with a resolution of more than 300 seconds per pixel, RRDtool will do some calculations. LAST(1,3,2,5,4) == 4 MIN(1,3,2,5,4) == 1 MAX(1,3,2,5,4) == 5 AVG(1,3,2,5,4) == 3 which answer do you want to get if RRDtool consolidates 5 samples into one at graph time? (rrdtool graph ... --start end-250h ...) HTH Alex -- 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
