[rrd-users] Strange behavior when using CDEF to divide twovalues

Wesley PA4WDH pa4wdh at yahoo.com
Fri Feb 22 19:00:35 CET 2013


Hi Alex,

I just saw your message on the rrdtool-developers mailing lists. Things make sense now, but even with that information it took me a while to notice COUNT is indeed an operation listed in the rrdgraph_rpn manual :-)

Thanks for your support.

Best regards,
Wesley

--- On Fri, 2/22/13, Wesley PA4WDH <pa4wdh at yahoo.com> wrote:

> From: Wesley PA4WDH <pa4wdh at yahoo.com>
> Subject: Re: [rrd-users] Strange behavior when using CDEF to divide twovalues
> To: rrd-users at lists.oetiker.ch, "Alex van den Bogaerdt" <alex at vandenbogaerdt.nl>
> Date: Friday, February 22, 2013, 4:59 PM
> Hi Alex,
> 
> I don't really know what's going on, but ...
> ... changing the DS name from COUNT to NUMBER did not change
> anything.
> ... changing the VNAME from COUNT to NUMBER did produce the
> right result.
> ... changing the VNAME to NUMBER but keep the DS name
> "COUNT" produces the same result (now available at http://ernstagn.home.xs4all.nl/rrd ).
> 
> So the problem is in the VNAME, is COUNT some kind of
> reserved word ?
> 
> Best regards,
> Wesley
> 
> --- On Thu, 2/21/13, Alex van den Bogaerdt <alex at vandenbogaerdt.nl>
> wrote:
> 
> > From: Alex van den Bogaerdt <alex at vandenbogaerdt.nl>
> > Subject: Re: [rrd-users] Strange behavior when using
> CDEF to divide twovalues
> > To: rrd-users at lists.oetiker.ch
> > Date: Thursday, February 21, 2013, 10:13 PM
> > Lol...
> > 
> > I figured it out. Hard to spot, but embarrassing
> > nevertheless.
> > Try changing the name "COUNT" into something else, such
> as
> > "NUMBER".
> > 
> > We continue the discussion (maybe on
> rrdtool-developers
> > even) when you 
> > confirm that this solves the problem.
> > 
> > cheers,
> > Alex
> > 
> > ----- Original Message ----- 
> > From: "Wesley PA4WDH" <pa4wdh at yahoo.com>
> > To: <rrd-users at lists.oetiker.ch>;
> > "Alex van den Bogaerdt" 
> > <alex at vandenbogaerdt.nl>
> > Sent: Tuesday, February 19, 2013 9:29 PM
> > Subject: Re: [rrd-users] Strange behavior when using
> CDEF to
> > divide 
> > twovalues
> > 
> > 
> > > Hi Alex,
> > >
> > > --- On Tue, 2/19/13, Alex van den Bogaerdt <alex at vandenbogaerdt.nl>
> > wrote:
> > >> Then graph from mon 06:00 to 10:00. 4 hours,
> should
> > be 48
> > >> times 300 seconds.
> > >> Set the image width to 480 pixels.
> > >> I expect to see images that jump from rate to
> rate
> > every 10
> > >> pixels.
> > >> Provide the output of an rrdtool dump, but
> please
> > only the
> > >> relevant parts
> > >> (again: 06:00 to 10:00)
> > >> Add some output to your graphs. min, avg and
> max.
> > >
> > > Everything done except the min avg and max output,
> i've
> > never done that so 
> > > i need some more time to figure that out.
> > > However, the rest is now located here: http://ernstagn.home.xs4all.nl/rrd
> > > Beware that the script creates/removes some files,
> be
> > careful if you run 
> > > it in a directory that already contains other
> stuff.
> > >
> > >> Let's tackle this problem :)
> > >
> > > \o/
> > >
> > > Best regards,
> > > Wesley
> > > 
> > 
> > _______________________________________________
> > rrd-users mailing list
> > rrd-users at lists.oetiker.ch
> > https://lists.oetiker.ch/cgi-bin/listinfo/rrd-users
> > 
> 
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