[hobbit] Strange rrd problem

[Stef Coene]

On Friday 13 July 2007, Thomas Kaehn wrote:
> Hi,
>
> I've set up a hobbit server to monitor a couple of systems.
>
> However the network test graphs from exactly one system are looking
> quite strange:
>
> http://www.westend.com/pop3-1.png
> http://www.westend.com/pop3-2.png		(zoomed in view)
>
> According to this graph pop3 is answering always within zero seconds (I
> can't imagine this). And the response time of pop3s is alternating in
> such specific way that rrd draws triangles.
>
> I've already deleted the rrd files, but the effect remains the same.
>
> The system is running Debian 4.0 (librrd2 version 1.2.15-0.3). Has
> anybody seen such strange effects before? All other systems and even
> other services on the same system are looking reasonable.
Today, I noticed the same problem.  I have 2 hobbit servers: AIX with 
rrdtool-1.2.10-2 and a linux box with 1.2.15-0.3ubuntu1.  The AIX box is ok, 
the linux box shows the same trends.
I only see this in the http graphs.  Not in the ssh graphs.

Maybe a problem with version 1.2.15 ?  


Stef