[rrd-users] How to find maximum

[Przemyslaw Karwasiecki]

Hello all,

I have a simple problem:

My rrd file contains data about network latency, and packet loss.
Latency varies form 0 to ~1000ms, packet loss is between 0-100%.

I want to use autoscaling feature of rrd graph to adjust maximum
value on Y axis, so graph is more readable. But at the same moment,
I need to normalize packet loss to scale it accordingly.
(So 100% packet loss will be top value on Y axis)

It wouldn't be a problem with cdef, but what I am missing here 
is the way how to find what is maximum value of Y axis after
autoscaling.

On the other hand I know that I can use MAX value in GPRINT,
but how to use it in RPN formula in CDEF?

Any suggestions?

Thanks,

Przemek

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