[Orca-users] Re: "interval" in orcallator.cfg

[Blair Zajac]

If your data gathering tool uses a 10 minute interval, then ideally
the `interval' in your Orca configuration file should also be 10
minutes.

I don't know all of the issues surrounding using a smaller `interval'
value than the interval in which the measurements are made, but I
don't recommend doing it.  There may be issues where RRD will calculate
the wrong consolidated values, etc.  This would be a good question
for the RRDtool mailing list.

While the main Orca code doesn't intrinsically use a 5 minute
`interval', all of the default plot time ranges and number of
measurements needed for the time span are based on a 5 minute
`interval'.  Look in lib/Orca/Constants.pm to see these values.  Orca
scales the the number of measurements in the time span (e.g. daily time
span) to the `interval' value to keep the total time span length the
same.

Regards,
Blair

Steve Gilbert wrote:
> 
> I know this has probably been asked 100 times already, so let me
> apologize in advance for that, but I couldn't dig a satisfactory
> answer out of the archives.  Anyway, the comments in orcallator.cfg
> have this to say:
> 
> # interval
> #   The interval here must match the interval used by orcallator to
> #   record data.  Do not change this, as it has an effect on the
> #   generated RRD data files.
> 
> ...but what if my "orcallator" that I have created myself uses a
> 10 minute interval instead of 5 minutes?  Seems like the RRD files
> should handle that fine unless I'm misunderstanding something.  It's
> cool to sync Orca with it's respective "orcallator," right?  Is there
> anything intrinsic to Orca about a 5 minute interval?
> 
> Steve Gilbert
> gilbert at cs.utk.edu
> 
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