[rrd-users] Re: GPRINT the difference between Max and Min

[John Barber]

Thanks for the feedback Alex,
I did get it to work, I think anyway, I need to wait a while to see the
results, but so far it seems to work.

I did it using option 1but adding another VDEF by setting it to equal the
CDEF.


-- option 1
CDEF:totaldev1=item0,POP,totalmax,totalmin,-    --a CDEF has to have at
least 1 DEF or CDEF so I added 1 and used  POP to get rid of it
*VDEF:totaldev2=totaldev1,MAXIMUM
*LINE2:total#FF0000
GPRINT:totaldev:%6.2lf%s\c>                            --can't GPRINT a CDEF



Not sure if that's the best way to do it, but it seems to have worked.






On 5/22/06, Alex van den Bogaerdt <alex at ergens.op.het.net> wrote:
>
> On Mon, May 22, 2006 at 02:05:05PM -0400, John Barber wrote:
>
> > VDEF:totalmax=total,MAXIMUM                         --I'm not sure if
> you
> > can use MAXIMUM with a CDEF or not
>
> I think you can.
>
> > -- option 1
> > CDEF:totaldev=item0,POP,totalmax,totalmin,-    --a CDEF has to have at
> least
> > 1 DEF or CDEF so I added 1 and used  POP to get rid of it
>
> Works.
>
> > GPRINT:totaldev:%6.2lf%s\c>                            --can't GPRINT a
> CDEF
>
> Yes you can.  Use the original format, with 'AVERAGE' (or 'MAX', or
> 'MIN').
>
> > --  option 2
> > VDEF:totaldev=totalmax,totalmin,-                     -- Can't use VDEFs
> in
> > a VDEF RPN?
>
> No, not at this time.  Sorry, development hasn't progressed yet.
>
>
> --
> Alex van den Bogaerdt
> http://www.vandenbogaerdt.nl/rrdtool/
>
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