[Orca-users] Re: Updating Orca graphs at longer intervals

[Blair Zajac]

If you run Orca continuously but not using the -o command line
option, then it'll run much faster since it doesn't have to load
a large amount of information from each run.

Also, are you compressing the percol-* files?  If so, Orca needs
to spawn gzcat to read the file.

Which version of Orca you are using?

Regards,
Blair

pearcec at commnav.com wrote:
> 
> How can we get this process to run faster?  It is way to slow for the
> 5 machines to take 3+ minutes.  I will be happy to try and generate
> some code to speed up the process.
> 
> Christian
> 
> --- In orca-users at y..., Blair Zajac <blair at a...> wrote:
> > Loading data from the percol-* files and loading them into the RRD
> > files is the most time consuming part.  Orca creates a number of
> > anonymous subroutines to load the data and then feed it into the
> > RRD files.
> >
> > Regarding the lazy option, Orca will only generate the image (GIF or
> > PNG) files if there is new data to plot, so I don't see the need for
> > the RRD lazy option.
> >
> > Having a demand driven image cache would be cool.
> >
> > Regards,
> > Blair
> >
> > pearcec at c... wrote:
> > >
> > > I am running into a similiar problem.  I have five machines I am
> > > pushing orcallator date from.   I am running with the -o and -r
> > > switch.  It is still taking
> > >
> > > Current running time is 3:04 minutes.
> > >
> > > real    3m4.583s
> > > user    2m51.490s
> > > sys     0m4.160s
> > >
> > > between runs.  When I tell it to run the graphing and the html
> > > generation (ie no -r), the impact is minimal.  It seems the data
> > > gathering and rrd insertion is time consuming.  Is there a rookie
> > > mistake I could be making.
> > >
> > > As far as making graph generation more efficient, it doesn't look
> like
> > > you orca makes use of the "lazy" switch that RRDtool provides.  I
> > > haven't had a lot of time with the code but it might be easy to
> hack
> > > it into Orca/ImageFile::_update_graph_options.
> > >
> > >   if ($opt_use_lazy) {
> > >     push(@options, '-z');
> > >   }
> > >
> > > Then add this to orca.
> > >   elsif ($arg eq '-o') {
> > >     $opt_use_lazy = 1;
> > >
> > > the Orca/Constats.pm's file needs updating too.  If you guys think
> > > this is a good idea, I could hack it together and generate some
> > > patches.  I am more concerned with the inputing of data into RRD.
> I
> > > feel it isn't very fast.  Maybe I should move over to the
> developers
> > > list.
> > >
> > > The other options, though I am sure you guys don't want to do
> this, is
> > > to write a CGI script that will generate the the graphs
> dynamically.
> > > (IE only when needed) Then store it in a cache for later hits.  I
> > > might be able to help with this, the company I work for may allow
> me
> > > to build it and release it to orca, but it has to help use
> accomplish
> > > what we are trying to do.  Right now I am convice the data
> updating is
> > > the problem.
> > >
> > > --
> > > Christian Pearce
> > > http://pearcec.fast.net/
> > >
> > > --- In orca-users at y..., Blair Zajac <blair at a...> wrote:
> > > > Hello David,
> > > >
> > > > Currently there is no way to do what you're looking for except
> by
> > > > the method you use with -o -r and then -o command line options.
> > > >
> > > > It wouldn't be too hard, and I would appreciate the patches, to
> take
> > > > some of the code that implements the find_times parameter, such
> as
> > > the
> > > > time parsing, and use it to regenerate the images after a
> specific
> > > > time.  If you choose to take on this mission :), I'll send you
> the
> > > > latest Orca beta version to work with.  I think naming the new
> > > > parameter "generate_plot_times" would be a good fit with some
> new
> > > > parameters in the next Orca release.
> > > >
> > > > Regards,
> > > > Blair
> > >
> > >                    Yahoo! Groups Sponsor
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> > >
> Service.
> 
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