Alex van den Bogaerdt wrote: > Bjorn Nordbo wrote: > > RRA:AVERAGE:0.5:1:8064 > > RRA:AVERAGE:0.5:6:700 > > > > Ie. 28 days of high resolution (5 min) samples and 14 days om > > lower resolution (30 min) samples. I presume there's no good > > reason to keep the second RRA around(?), and thus I would like > > to remove it. > > You can create graphs that plot 30 minutes per pixel. These would > use the second RRA so it's not wasted. I'd grow the RRA size by > 100 rows in order to be able to use them for graphs in a one-hour > resolution as well (800 rows, consolidated to 400 rows of 1 hour > at graph time).
Ok, in fact I dodn't post the entire RRA definition: rrdtool create /tmp/temp.rrd \ DS:ds0:COUNTER:1200:0:12500000 \ DS:ds1:COUNTER:1200:0:12500000 \ RRA:AVERAGE:0.5:1:8064 \ RRA:AVERAGE:0.5:24:775 \ RRA:AVERAGE:0.5::288:1095 \ RRA:MAX:0.5:24:775 \ RRA:MAX:0.5:576:547 The idea was to: - store four weeks of 5 minute samples - store two months of 2 hour samples - store three years of 1 day samples - store max values for every 2 hours 2 months back - store max values for every 2 days 3 years back I mainly use the data for presenting MRTG-lookalike pages. The high resolution samples are used for zooming in on old events and for monitoring trends. Is this definition a bad idea? Should I add RRA's to match the most commonly used presentation intervals? Do you have any idea on how much impact this has on graphing time? > > Is there a good way of doing this (resize to zero doesn't do > > the trick), except dumping the output to XML, modify it and > > restore it to anothe RRD archive? > > If you like you can write an application that does the proper > magic. Every now and then this (kind of) question pops up but > I think the dump and restore exercise is good enough for the > occasional change needed. I think I'll write something. Updating 10000 RRD's manually isn't exactly the way I want to spend the rest of 2001. :-) Thanks for your help! -- Bjørn Nordbø - Network Development - Nextra Norway -- 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
