[rrd-users] Re: Using stack vs lines - opinions?

Alex van den Bogaerdt alex at ergens.op.HET.NET
Tue May 28 15:50:35 MEST 2002

'Donald Mahler' wrote:

> Using rrdtool,  I am currently graphing  between 5-15 lines on the same
> graph, showing for example server  cpu consumption across all servers in a
> specific business unit.    it seems to work great (now that I am setting
> colors that differentiate nicely :-)

This means you can easely see how they relate and you can pick the
highest value at any given time.

> Question: I was wondering if people had any guidelines or opinions
> regarding the use of lines vs stack.  When do you use lines vs when do you
> use stacks.

IMHO stack is best used when you want to have a look at the grand
total *and* each of its components.  If you'd use stack, all but one
lines would start with an offset on the Y-axis.  It is therefore hard
to see how much the individual value is.  Without stacking them, it
isn't easy to see how each value relates to the total.

> The stack option certainly seems more interesting looking, but I am not
> sure how well it looks when the "lines" need to intersect a lot.  Is it
> best used when the data tends to "stack" cleanly?


Maybe you are confusing stack with area ?

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