interesting patterns in graphs

[Jon Boede]

Our ping times occasionally turn up graphs like the attached... It seems 
to me that this is an artifact of how rrd averages multiple into time 
"buckets" but I am not quite sure of that... anybody have an opinion as 
to what causes it?



If the image doesn't come through as an attachment, I've put it up on 
http://www.email.net/jon/hobbitping.png

Curiously,
Jon
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