I don't think it has anything to do with how long it was down - purely on data collected and some standard deviation calcs. Yes, you'll find more info than you care to in the rrd docs and/or by googling rrd upper lower deviation, etc. As noted it's a feature of rrd, so ntop devs rely on the rrd docs vs. duplicating their efforts. Perhaps a footnote or embedded link to the rrd info on this feature would be a good idea!
G -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Tony Nelson Sent: Tuesday, September 07, 2010 3:48 PM To: [email protected] Subject: Re: [Ntop] Upper Value on Network Load Graphs I've used ntop, exactly as I've had it in the past.. Is this possibly because I had the ntop server shut down for quite a long time and just started it back up? I'd be happy to google it if I knew what exactly I was looking for... I did spend about a half an hour reading through ntop docs.. I'll google RRD stuff now too. Thanks Tony On Sep 7, 2010, at 4:41 PM, Gary Gatten wrote: > Google this. It's a standard deviation thing - check rrd docs for more info, > it's not specific to ntop. > > G > > > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of Tony Nelson > Sent: Tuesday, September 07, 2010 3:25 PM > To: [email protected] > Subject: [Ntop] Upper Value on Network Load Graphs > > Hi All, > > I recently started monitoring part of my network again and I'm seeing a graph > I can't explain. Basically the "upper" line is significantly higher than any > throughput I'm seeing. > > I think I may have a node on my network that is misbehaving, but I'm not sure > how to figure out what to look at next. > > The graphs that I'm seeing can be found here: > > http://borneo.starpoint.com/~tnelson/ntop.html > > When I look at the Network Load Statistics Matrix, the Average Throughput of > the top nodes doesn't come close to matching the "upper" bandwidth. > > Can anyone suggest what I should look for next in my network? > > Thanks in advance > Tony Nelson > > > > > > > <font size="1"> > <div style='border:none;border-bottom:double windowtext 2.25pt;padding:0in > 0in 1.0pt 0in'> > </div> > "This email is intended to be reviewed by only the intended recipient > and may contain information that is privileged and/or confidential. > If you are not the intended recipient, you are hereby notified that > any review, use, dissemination, disclosure or copying of this email > and its attachments, if any, is strictly prohibited. If you have > received this email in error, please immediately notify the sender by > return email and delete this email from your system." > </font> > > _______________________________________________ > Ntop mailing list > [email protected] > http://listgateway.unipi.it/mailman/listinfo/ntop > <font size="1"> <div style='border:none;border-bottom:double windowtext 2.25pt;padding:0in 0in 1.0pt 0in'> </div> "This email is intended to be reviewed by only the intended recipient and may contain information that is privileged and/or confidential. If you are not the intended recipient, you are hereby notified that any review, use, dissemination, disclosure or copying of this email and its attachments, if any, is strictly prohibited. If you have received this email in error, please immediately notify the sender by return email and delete this email from your system." </font> _______________________________________________ Ntop mailing list [email protected] http://listgateway.unipi.it/mailman/listinfo/ntop
