moose wrote: >the problem is that the value is unreal! > >why > > "DEF:in=$rdb:IN:AVERAGE " > >shows the value which I need >and > "GPRINT:in:AVERAGE:Speed IN\\: \%6.2lf kbyte", > >shows something unreal > >http://rrd-mailinglists.937164.n2.nabble.com/file/n6402194/graphic-daily_1.png
What value do you expect ? Looking at that graph, I'd expect something in the order of 60-something k. In situations like this, it is well worth making yourself a set of test data - ie a fixed set up update instructions which put known data into a freshly created RRD file. That way, you can calculate exactly what should come out, and you can repeat the test as often as you like without the data (and expected results) changing every time. I would strongly suggest doing this since you seem to be struggling to grasp some of the basics of how RRD works - it will really help you. An example of how you could do this is : #!/bin/bash rm testfile.rrd rrdtool create testfile.rrd --start 1306317900 --step 300 \ DS:test:COUNTER:600:0:U \ RRA:AVERAGE:0.5:1:10 \ RRA:AVERAGE:0.5:5:2 rrdtool update testfile.rrd 1306317000:U rrdtool update testfile.rrd 1306317300:300 rrdtool update testfile.rrd 1306317600:600 rrdtool update testfile.rrd 1306317900:900 rrdtool update testfile.rrd 1306318200:1200 rrdtool update testfile.rrd 1306318500:1500 rrdtool update testfile.rrd 1306318800:1500 rrdtool update testfile.rrd 1306319100:1200 rrdtool update testfile.rrd 1306319400:900 rrdtool update testfile.rrd 1306319700:600 rrdtool update testfile.rrd 1306320000:300 rrdtool update testfile.rrd 1306320300:U That will create data that starts at 1306317000 where it steps up to a **rate** of 1/s, ramps up to a **rate** of 5/s, and then ramps down again. If you plot from 1306317000 to 1306320000 in a graph, then you should see this, and should see an average of 3. If you plot the 1500s (5 * 300s) resolution data, then you should just see two blocks of 3. Note - it is important to understand that the update at time 1306317300 sets the rate for the 300s leading up to that time. So the rate is 1 from 1306317000 to 1306317300, and **NOT** from 1306317300 to 1306317600. Obviously, you can fiddle with the data to your heart's content until you understand what's going on and have the right outputs. -- Simon Hobson Visit http://www.magpiesnestpublishing.co.uk/ for books by acclaimed author Gladys Hobson. Novels - poetry - short stories - ideal as Christmas stocking fillers. Some available as e-books. _______________________________________________ rrd-users mailing list rrd-users@lists.oetiker.ch https://lists.oetiker.ch/cgi-bin/listinfo/rrd-users
