Mysterious Sawtooth Graphs

[mv652 at softhome.net]

Just to add to the other confirmations... 


We've noticed this behaviour too (also using fping) after moving to 4.3.0.0 
beta2 (clean install). 

We don't have very many hosts at the moment, but most of our hosts are 
multi-homed.
The monitoring server has a separate network link for each VLAN/network, so 
no routing is involved for each connection test. 


We thought the problem may be one or two faulty nic's on the monitoring 
server, but we get the 'sawtooth' behaviour with some systems but not others 
within the same VLAN/network. 


So far we haven't found a solution though. 

Regards,
Mario 

thorsten.erdmann at daimler.com writes: 

> Hi 
> 
> I use Hobbit to monitor about 700 systems. I get some mysterious looking 
> graphs with the CONN test and also the bbgen test itself.
> It looks like two overlayed sawtooth curves. Any idea why the graphs look 
> so weird? I cannot believe these are the real response times. 
> 
> Here are two demo pics: 
> 
> http://www.trektech.de/test/hobbitgraph_conn.png
> http://www.trektech.de/test/hobbitgraph_bbtest.png 
> 
> BTW.: is there a way to speed up the connect test. It needs about 35sec 
> which is not critical but not very fast. 
> 
> Thorsten Erdmann
> ITI/EP68
> Mercedes Benz Werk Hamburg
> Tel.: +49-40-7920-2593
> mobil: +49-160-8614383
> Lotus-Fax:+49-711-1779043874
> mail: thorsten.erdmann at daimler.com 
> 
> 
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