[rrd-users] Re: horizontal line

Pavel Ruzicka pavouk at pavouk.org
Mon May 22 14:14:29 MEST 2006


> > I want to create bandwidth graph with additional horizontal line, which
> > presents Max possible speed. RRD files are from MRTG.
> > I tried this in my PERL script, but without success:
> > ($maxbytes is previously computed value from more RRD files.)
> > ------------
> > push @args, "CDEF:maxbw=${maxbytes},8,*";
> > push @args, "LINE1:maxbw#000000:Max speed  ${maxbytes}\\l";
> Try HRULE.

Thanks, this works for me:
push @args, "HRULE:${maxbits}#FF0000:Max speed  ${maxbitsleg}\\l";

> Alternatively, use an existing ds-name and discard it right away,
> using POP.

I tried it, but it doesn't works for me:
push @args, "CDEF:maxbw=fin,POP,$maxbytes,*,8,/";
push @args, "LINE1:maxbw#000000:Max speed  ${maxbytes}\\l";

I get this error: RPN stack underflow.

I don't know what now, because HRULE is marked like (deprecated).

Best regards,

Pavel Ruzicka

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