[mrtg] Re: Setting Y axis scale to a fixed value

[rajendra at subisu.net.np]

Hi all,
I have just entered this discussion looking at the following comments.

Mark Said: >> I'd be perfectly happy if the graphs only went as far as the
red line.

I had also explored this problem before. Setting the absmax value will
result the graph cross the maxbytes up to absmax value. However if the
values (spikes) goes beyond absmax it will set to zero, but not trauncated
at the absmax. If I am not wrong Mark wants something that when the read
values are above the maxbytes (or absmax) it should be truncated at the
line  defined by maxbytes but not zero.

I did not find any good solution for this. But there would be alternative
if you set the option "logscale" or "secondmean" (logscale takes the
preference over secondmean) to the given target. But I find the graph
produced by this option is not easy to interpret. You can give a try...
and later can be reverted if does not suit you.

However, I seek something truncated as said by Mark to the normal scale
graph and not the logscale.

May be someone has the solution.
Looking forward...

Thanks!
Rajendra Adhikari.
Subisu Cablenet Pvt. Ltd.



> Hi Mark,
>
> On Tuesday 16 May 2006 10:08, Scott_Rochford at dell.com wrote:
>> It sounds to me like it does exactly what you want?
>> Perhaps some graphs will help. Unfortunately the line was not very
> busy
>> when I made them but there is a nice peak which causes the trouble I'm
>
>> having.
>> I'd be perfectly happy if the graphs only went as far as the red line.
>
>> Whatever is above there can simply be truncated.
>
> In that case perhaps AbsMax is the setting you need to use.  I'm not
> sure why you're getting values on your chart above MaxBytes; has it
> always been set to 8k?
>
> You will need to either reset or modify your historical data to remove
> the higher values if you don't want them to appear on the chart any
> more... or you could just wait for them to age and fall off the chart.
>
> Regards,
>
> Scott.
>
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