[rrd-users] highest 95 percentile

[Morten Guldager]

I just received an anonymous mail response to the above which boils down to
the following two lines:

CDEF:C_95pct_MAX=D_1,POP,V_Input_95,V_Output_95,MAX
VDEF:V_95pct_MAX=C_95pct_MAX,MAXIMUM

which when merged into my previous code seems to do the trick.

Thanks!

-- 
/Morten %-)


On Mon, Jul 28, 2014 at 12:18 PM, Morten Guldager <morten.guldager at gmail.com
> wrote:

> I have two network interfaces graphed, they should be 95 pct billed as
> one.
>
> Algorithm should be:
> - sum all inputs as one and all outputs as another "graph"
> - calc the 95pct for each "graph"
> - finally take the highest of those two.
>
> I need to make a HRULE showing the highest 95 percentile, input or output.
>
> I have tried: (a bit silly names around, they are machine generated)
>
> DEF:D_1=interface-12.rrd:InOctets:AVERAGE
> DEF:D_2=interface-11.rrd:InOctets:AVERAGE
> CDEF:C_Input=0,D_1,+,D_2,+,8,*
> VDEF:V_Input_AVERAGE=C_Input,AVERAGE
> VDEF:V_Input_MAXIMUM=C_Input,MAXIMUM
> LINE2:C_Input#00FF00:Input
> GPRINT:V_Input_AVERAGE:AVERAGE %6.2lf%s
> GPRINT:V_Input_MAXIMUM:MAXIMUM %6.2lf%s\\l
>
> DEF:D_3=interface-12.rrd:OutOctets:AVERAGE
> DEF:D_4=interface-11.rrd:OutOctets:AVERAGE
> CDEF:C_Output=0,D_3,+,D_4,+,8,*
> VDEF:V_Output_AVERAGE=C_Output,AVERAGE
> VDEF:V_Output_MAXIMUM=C_Output,MAXIMUM
> LINE2:C_Output#0000FF:Output
> GPRINT:V_Output_AVERAGE:AVERAGE %6.2lf%s
> GPRINT:V_Output_MAXIMUM:MAXIMUM %6.2lf%s\\l
>
> VDEF:V_Input95=C_Input,95,PERCENT
> VDEF:V_Output95=C_Output,95,PERCENT
> VDEF:V_total95=V_Input95,V_Output95,MAX     #   <-- this one fails!
> HRULE:V_Input95#009900:Input 95PCT
> HRULE:V_Output95#000099:Output 95PCT
> HRULE:V_total95#FF0000:total 95PCT
>
> It fails with: variable 'V_Input95' not DEF nor CDEF in VDEF 'V_total95'
>
> I cannot use a VDEF on VDEF's it seems... Suggestions?
>
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