Dan, > Sounds like this is in dire need of a FAQ! :)
yes, unfortunately eveyone seems to come from a diffferent angle ... but once you got it down, it would be great if you could write up what you understood ... > so why does rrd dump and rrd fetch show different results? > I'll check the "--resolution" option before continuing that question. rrdtool dump shows the whole rrd file rrdtool fetch picks one RRA and shows you the data from that RRA cheers tobi > and I could swear I "fixed" this problem with a simple modification to the RRA > definition. > I'm almost positive it had something to do with "ABS", but that was 5 years > ago. > > > > From: Tobias Oetiker <[EMAIL PROTECTED]> > > To: Dan Gahlinger <[EMAIL PROTECTED]> > > CC: [EMAIL PROTECTED], [email protected] > > Subject: Re: [rrd-users] newbie rrd question - probably a very old issue > > Date: Sat, 1 Sep 2007 20:49:26 +0200 (CEST) > > > > Dan, > > > > note that rrdfetch is NOT consolidating anything, it shows you what > > is stored in the rrd ... if you want to see what is actually > > stored, use rrdtool dump ... > > > > you may also want to read through the mailinglist archives, since > > we get someone like you every few months how needs many days of > > patient explaining until he understand why rrdtool is designed the > > way it is designed and why it works the way it works, and why this > > is the right thing todo ... (it has been like this for the last 8 > > years actually and tousands have used and understood the logic) ... > > you will get there ... > > > > cheers > > tobi > > > > > > > > > > that's not exactly what I want. > > > > > > to be honest, I'd be happy if rrd did one simple thing (or two depending > > on > > > your point of view). > > > > > > I'd recommend the "min" and "max" of the average function be done a bit > > > differently. > > > for an average graph, the "maximum" (shown at the bottom) should always be > > > kept, > > > and the "minimum" should always be kept > > > > > > also the points for those on the graph should always be kept, even if it > > means > > > the verticals in the graph are stretched a bit. > > > > > > the graph doesnt have to show ever portion of the scale either. by this I > > mean > > > if there are no values between 10 and 40, you dont need to show the > > portions > > > from 11-39 essentially > > > as long as the maximum, minimum and average are represented properly > > > > > > it should be simple enough to keep track of the minimum and maximum over > > time. > > > my logic: > > > if you have a spike of 100 one day and that is you maximum, then a week or > > a > > > month or a year later, if that is still your maximum, then it is always > > your > > > maximum, and the spike should be shown > > > today it should be the max, tomorrow it should be the max, and until a > > higher > > > value occurs, it should always be the max, same with minimum, if we got a > > > zero, that will always be the minimum. and the overall average should be > > the > > > average between those two values. > > > > > > otherwise the data is incorrect and quickly becomes meaningless. > > > yesterday it spiked to 90, but today it shows the max is only 30, so did > > it > > > spike? not according to the graph it didnt. > > > > > > and I still dont understand why the command line (rrdfetch) is > > consolidating, > > > it has no graphing limitations > > > > > > I don't know a better way to do it. > > > Dan. > > > > From: Jason Fesler <[EMAIL PROTECTED]> > > > > To: Dan Gahlinger <[EMAIL PROTECTED]> > > > > CC: [EMAIL PROTECTED], [email protected] > > > > Subject: Re: [rrd-users] newbie rrd question - probably a very old issue > > > > Date: Sat, 1 Sep 2007 10:09:32 -0700 (PDT) > > > > > > > > Based on a side conversation with Dan, this is what I'm understanding: > > > > > > > > RRD will graph exactly one consolidated point in time, if there are more > > > > points than pixels on the X axis. Dan wants *all* value points > > represented, > > > > not consolidated. RRD has no option to do that. > > > > > > > > I'm thinking that *maybe* it can be faked, with some stacked graphs or > > > > something, *if* MIN and MAX were also included in the rrd file; do a > > fill > > > > between min and max. > > > > > > > > But it isn't going to happen with a single graph statement, and I'm > > having > > > > problems figuring out how to sanely show min/average/max if desired. :-) > > > > > > > > > > _________________________________________________________________ > > > Show Your Messenger Buddies How You Really Feel > > > http://www.freemessengeremoticons.ca/?icid=EMENCA122 > > > > > > > > > > -- > > Tobi Oetiker, OETIKER+PARTNER AG, Aarweg 15 CH-4600 Olten > > http://it.oetiker.ch [EMAIL PROTECTED] ++41 62 213 9902 > > _________________________________________________________________ > Kick back and relax with hot games and cool activities at the Messenger Caf?? > http://www.cafemessenger.com?ocid=TXT_TAGHM_SeptHMtagline1 > > -- Tobi Oetiker, OETIKER+PARTNER AG, Aarweg 15 CH-4600 Olten http://it.oetiker.ch [EMAIL PROTECTED] ++41 62 213 9902 _______________________________________________ rrd-users mailing list [email protected] https://lists.oetiker.ch/cgi-bin/listinfo/rrd-users
