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