On Wed, Oct 15, 2003 at 02:54:59PM -0400, Blake Crosby wrote: > I'm havng difficulty understanding the relationship between heartbeat and > step.
Don't look for a close relationship; there isn't. > I have 4 values that I would like to place in the rrd database every 30 min > (11 and 44 minutes past each hour). However I would like the graph to be as > smooth as possible (especially when only 24-36 hours worth of data is > displayed). > > I'm assuming id set up the step to be 300 seconds (5 minutes) and the > heartbeat to be 1800 seconds (30 minutes). This way rrdtool will average the > values between the 30 minute updates. Why? If you're going to set step to 300 and update every 6*300 seconds, all you achieve is that you'll be updating 6 intervals in one command. There's no smoothing going on. You're right about the heartbeat, although I'd set it to something larger than 1800 (say 2000 or so). > When I create the rrdatabase then do a dump, each row is a multiple of 5 > minutes (regardless of what time the --start value is). Since I am updating > the database at 11 and 44 minutes past each hour are those values going to > get lost? Plenty of information available on the normalizing process so I won't repeat that. Please google for it. HTH Alex -- http://www.googlism.com/index.htm?ism=alex+van+den+bogaerdt&type=1 -- 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
