[mrtg] Re: Changing Graph size.

[Perry, Duane]

I was seeing the reverse of your problem.  Very small traffic flows were
autoscaled to look large and if you were scanning the graphs to see anything
strange you were constantly distracted by big chunks of color that turned
out to be small when you checked the scale.  I started setting MaxBytes to
the minimum scale I wanted to see (10Mb for example), setting the AbsMax to
the actual top speed of the link and using "Unscaled[_]: y".  I cannot see
any solution to displaying large blasts of traffic without shrinking the
small stuff.  You could set the AbsMax to something lower than the link
speed but anything above that would display as zero.  You would not see the
spike from your backup but you would also hide any denial of service attacks
or boxes spewing garbage and clogging the network.  By default mrtg graphs
are 100 x 400 but you can set the size up to 600 so maybe setting the
vertical to 600 (XSize[_]: 600) would give you what you want.

Duane Perry

-----Original Message-----
From: Robert Walters [mailto:Robert.Walters at LodgeWorks.com]
Sent: Thursday, February 15, 2001 2:15 PM
To: 'MRTG MailingList'
Subject: [mrtg] Changing Graph size.



	I am running MRTG 2.9.7, and adding one device at a time to the
monitoring.  I have ran across a problem with the graph auto scaling.  For
example, normal LAN traffic is recorded throughout the day, everything looks
great.  The NIC is a 3C985 GB NIC, and at night the Tape backup runs, also
on a GB NIC.  The backup speed really higher than the normal LAN traffic, so
when the graph auto scales to show the peak of the backup, the normal
traffic disappears into a flat line at the bottom of the graph.  Does
anybody know of a way to make the graph taller to allow me to still see
normal traffic?  Or maybe have a regular graph, (basically showing backup
traffic,) and a graph that is limited in its peak values to 'zoom in' to the
normal traffic? Any ideas would be greatly appreciated.

Thanks,

RPW

 
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