Hi,

if someone likes logarithmic scaling of of data and has
a filter expression for that channel that leaves no data
in an other protocol (e.g.: proto tcp and dst port 22)
he will get nfsen stuck after several operations with that.

In case of logarithmic scaling nfsen should check before
submitting data to rrdgraph whether there are data different
from zero and otherwise generate an N/A image.

Best regards, Jens Hektor

--
Dipl.-Phys. Jens Hektor, Netzbetrieb
RWTH Aachen University, Center for Computing and Communication
Room 2.07, Wendlingweg 10, 52074 Aachen (Germany)
Phone: +49 241 80 29206 - Fax: +49 241 80 22100
http://www.rz.rwth-aachen.de - [EMAIL PROTECTED]

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