[mrtg] Re: Large peaks in graph obscure "real" data

Peter Glanville peter_glanville at cuk.canon.co.uk
Tue Jun 17 16:41:38 MEST 2003

One solution:
Put the target into your config file twice, once with a low Maxbytes &
Absmax (to cut off the high data and show you daytime usage) and once with
a high value to show you the lot.


********************* original mail***********************

I'm monitoring input/output traffic on a Web server.
Normal daily activity peaks at around 600Mbits/s but
each night, the backups create a peak of 5Mbits/s and
reduce the daily activity to a virtual flatline.  I
want to collect all the data but only graph up to
(say) 1Mbits/s.

I've tried setting MaxBytes but then the backup peak
data is ignored and doesn't show at all.  I've also
tried using AbsMax and then I'm back to square-one
with the backup peak obscuring the normal activity and
a dashed red line at my MaxBytes value.

I'd like to effictively "zoom" in on the graph to show
up to 1Mbits/s on the y-axis yet still see the lower
part of the backup peaks even though they actually
continue off the top of the page and exceed this
1MBits/s scale.

Can anybody help me to achieve this effect?


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