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You may need png=1 if your GD library was compiled without GIF support (many are, due to Compu$erve's greedy lawyers). This might solve the problem.
Not sure what you mean by different metrics...
If you have unscaled=yes, this sets the overall default. However, interfaces have a different default (unscaled = no) and you need to override this -- UnScaled[_]=dwmy
In unscaled mode, you will always see the MaxBytes line. In scaled mode, the graph rescales to match the max data line.
_________________ Steve Shipway UNIX Systems, ITSS, University of Auckland, NZ Woe unto them that rise up early in the morning... -- Isaiah 5:11
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