RE: making "longer" graphs produces 'blocky' results

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Subject: RE: making "longer" graphs produces 'blocky' results
From: David Packham (dpackham@netcom.utah.edu)
Date: Mon Oct 02 2000 - 18:18:03 CDT 

How do you make those cool graphs on your page?  Can ya give us a sample
of your makefile?

Dave Packham


-----Original Message-----
From: Dave Plonka [mailto:plonka@doit.wisc.edu]
Sent: Monday, October 02, 2000 5:03 PM
To: flowscan@net.doit.wisc.edu
Cc: Andrew Fort
Subject: Re: making "longer" graphs produces 'blocky' results

On Mon, Oct 02, 2000 at 03:30:08PM +1000, Andrew Fort wrote:
> Warning, I'm a RRDtool beginner, but couldn't find anything directly
in the
> documentation about this.. It may be a common problem for FlowScan
users, so
> here goes:
>
> - I've modified Dave's example Makefile to produce a graph for 2
weeks,
> instead of 2 days.  The .png produced appears quite "blocky".  The
exact
> modification made is
>
> I've added a directive
>
> past_fortnight = $$($(perl) -e 'print time - $(week)*2*60*60')

If all you wish to do is change the time range or output file type, you
may not need to customize the most recent "graphs.mf" which I posted to
the list:

 
http://net.doit.wisc.edu/~plonka/list/flowscan/archive/att-0329/01-graph
s.mf.in.gz

There is already a make variable called "hours" which you can use as in
the example below.  First figure out how many hours you want:

   $ bc # two weeks
   2*7*24
   336
   $

Then pass that to make(1) on the command line:

   $ make -f graphs.mf filetype=png hours=336 io_services_bits.png

<snip>
> I'm guessing this isn't the right way to do this, or I need to include
> something else, or modify the RRD creation process to include more
accuracy
> for aggregate results like this?? If not, what's the correct way so I
get
> the lovely results for daily, bi-daily, weekly, fortnightly, monthly
and
> yearly, like I see on some FlowScan+RRDtool traffic pages..

I didn't see anything wrong with your method, so I don't know how you
got "blocky" results.  I'd just do something like this:

   #! /bin/ksh

   # { CONFIGURATION SECTION:
   mkdir=/usr/bin/mkdir
   make=/usr/xpg4/bin/make
   mv=/usr/xpg4/bin/mv
   # }

   for days in 1 7 30 365
   do
      ${mkdir?} -p ${days?}
      for graph in io_services_bits.png # list of targets here
      do
      if ${make?} -f graphs.mf \
         filetype=png hours="$(expr 24 \* ${days?})" ${graph?}
      then
         mv ${graph?} ${days?}/${graph?}
      fi
      done
   done

   exit

Dave

--
plonka@doit.wisc.edu  http://net.doit.wisc.edu/~plonka  ARS:N9HZF
Madison, WI

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