[rrd-users] Re: new log2rrd beta - handles MAX values, etc.
plonka at doit.wisc.edu
Tue Jun 27 21:36:34 MEST 2000
On Tue, Jun 27, 2000 at 12:00:43PM +0200, Rainer Bawidamann wrote:
> In the rrd file every rra ends "now". So when filling the rrd file with
> the values from the log file additional values are entered for the other
> rras. I.e. the rrd file contains
> 5 min samples from now-50h to now
> 30 min samples from now-350h to now
> 2 hour samples from now-1550h to now
> 1 day samples from now-19118h to now
> So there are
> - 5 min samples for 50h -> 600 samples
> - 30 min samples for 350h -> 700
> - 2 hour smaples for 1550h -> 775
> - 1 day samples for 19118h -> 796 (+14h) -> 797
OK, thanks for the explanation - I get it.
I've changed my call too RRDs::create to this:
RRDs::create ("$file", "-b", $START, "-s", 300,
When "UseRRDTool Yes" is specified, why does MRTG create the RRD with
Won't that RRA contain the same values as the initial AVERAGE RRA, and
therfore be redundant?:
> >> And what about reading a mrtg config file to look for
> >> the log files and the datasourcetype? ;-)
> > You mean look for the "gauge", "absolute", etc. options... hmm...
> And to get the names of (all) the log files ...
> > I might be willing to add this - if it could be done reasonably and
> > quickly.
> I think it wouldn't take much time (for me). I would take the parser out
> of mrtg and add some calls to log2rrd. Maybe I'll do it because it's
> good for 14all ;-)
OK. If you're enthusiastic to do that it's fine with me. Would you
rather write it as a stand-alone wrapper script which invokes log2rrd
or integrate it right into log2rrd? If you want to do the former, I'd
like to make sure I have all the command-line options in log2rrd that
you need. If you want to do the latter, we could synchronize a
hand-off of log2rrd (cuz I'm beta testing log2rrd-1.012) and/or keep in
touch to integrate the patches in prep for submitting a coherent
version for the RRDTOOL "contrib".
A couple other log2rrd issues:
* Are there ".log" files out there where the two `data sources' are of
two different types (e.g. one counter and the other gauge)? If so, I
should modify the log2rrd command line options so that you can
specify that. (Right now you can just say one type, e.g.
"-t COUNTER", "-t GAUGE", etc.)
* I think I should also modify log2rrd to change the heartbeat to 600
after the data is inserted as well. (Previously it was leaving it at
86400.) Any thoughts?
plonka at doit.wisc.edu http://net.doit.wisc.edu/~plonka ARS:N9HZF Madison, WI
More information about the rrd-users