Hi, I've been using RRDTool for about a day now, and I think it's great. However I have a question. I have noticed that in some sample RRD-creating scripts I've seen online (including the one in the tutorial), some people use more than one RRA in a single RRD.
Example from: http://people.ee.ethz.ch/~oetiker/webtools/rrdtool/tutorial/rrdtutorial.html rrdtool create test.rrd \ --start 920804400 \ DS:speed:COUNTER:600:U:U \ RRA:AVERAGE:0.5:1:24 \ RRA:AVERAGE:0.5:6:10 What is the advantage of having multiple archives (with different sample intervals) if you are only graphing one of these? For example, if I am graphing network i/o on a system and taking samples every 5 minutes, why would I also want to create another RRA which takes samples once per hour? I realize that would make a useful graph as well, but I don't see how to "get it out" of the RRA when you graph it, since it's under the same Data Source; so as far as I can tell the only way to determine hourly results based on the above RRD would be to extrapolate your 5-minute samples. But I'm sure I must be missing something! Thanks. -- 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
