[Orca-users] Re: Orcallator CPU Questions

[Blair Zajac]

Adam Levin wrote:
> 
> On Fri, 16 Aug 2002, Blair Zajac wrote:
> > Adam Levin wrote:
> > > The first thing you should do is look at the five minute numbers in the
> > > orca data files themselves.  They may show occasional peaks where the
> > > graphs don't, simply because of the way RRD handles the data.
> >
> > This data should be consistent.  Have you seen differently?
> 
> I recall some fairly short-interval peak loads on my servers where the
> numbers in the data file weren't completely represented by the graphs.  I
> assumed this was because it's not possible to show every data point in the
> space of the graphs.  It's especially noticable on the longer term graphs,
> like the monthly graphs.

Right.  On the longer term graphs, Orca tells RRD tool to do consolidation
of the 5 minute data points into 30 minute (for the weekly plots), 2 hours
(for monthly plots) and 1 day averages (for quarterly and yearly plots).  It
is this consolidated data that is plotted.

Best,
Blair

-- 
Blair Zajac <blair at orcaware.com>
Web and OS performance plots - http://www.orcaware.com/orca/