[rrd-users] Squared graphs

[grick at autistici.org]

Hi people,

    i have a weird problem with rrdtool graphs. Sometimes ( and when i say sometimes i mean for ten minutes/day )
	my monthly graph of the traffic looks like an "histogram".

	This is an image of the "squared" graph:

		http://img168.imageshack.us/img168/6571/80monthlygl2.png

	And this is an image of the graph as it has to be:

		http://img413.imageshack.us/img413/4172/80monthlyfu0.png

	I'm creating this graphs with perl using the RRDs module. This is
	the creation string:

		http://rafb.net/p/cTCGgr76.html

	And this is the output of 'rrdtool info 80.rrd':

		http://rafb.net/p/1x5pKD39.html

	I use rrdtool/librrd 1.2.15-03 on Debian Etch. 

	Yesterday on #rrdtool channel octo suggests may be a problem with
	the rrdtool automatic selection of the best fit RRA. 

	To test if this idea is correct i have forced the correct RRA with the
	'--step' switch, but because of the random nature of the problem,
	all i can do is wait to see if it appears again.

	Thanks in advance for your help,

	Giuseppe R.

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