On Tue, Dec 30, 2003 at 02:58:48PM +0100, Paul Courbis wrote: > I'm trying to setup an RRD database to kkep a track f "MAX" values of a > counter. My problem is that the values are transformed depending on the > timeslot alignement. That is, if I setup a RRD database receiving a data > every minute, the value is used unchanged if it's store on the beginning > of the minute, while it is transformed (average with previous value) if > it's entered some second laters.
That's the normalization process kicking in. > here's a little shell script that produces 2 curves, one with data > stored on the beginning of a minute, the other 30 second laters. As I > keep "MAX" values, curves should be the same (in my mind at least) but > it's not the case.... Run this script, it'll create a "demo.gif" graph > showing the problem. MAX has to do with RRA. Rates are going to the RRA _after_ normalizing is done. Try your script after changing the following: - change "step" from 60 to 1 - for each RRA, multiply the pdp_per_cdp value by 60 (hint: 1*60 == 60*1 , normalizing 1 second is different from normalizing 60 seconds) > If anyone can explain... I did, countless times. Please find them on the web, archives, google 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
