Mysterious Sawtooth Graphs

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
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