Re: {bb} bb frequency

["PAUL WILLIAMSON" <pwilliamson@mandtbank.com>]

Any requirements can be met if enough hardware is thrown 
at the problem.

Seriously, if you have a one minute test interval requirement, your 
server needs should be about 5x greater than what you would 
need for a 5 minute interval.  With BB it would be relatively easy.
Just get a box for a display, a box for pager, and lots of network 
test servers.  A one minute interval shouldn't be hard to obtain.

Paul

>>> Steve.Sayler@noaa.gov 08/23/06 7:53 AM >>>
Thanks for your concern, The default bb time cycle, testing once every
5
minutes, falls outside the range for my organization's status
monitoring
requirements, which recommends a 1 minute testing interval.

The re-creation of web page output is not an issue, like testing is,
since an email notificaton would occur upon failure indication. But if
the 1-minute testing testing overhead is detrimental to bb's
performance, perhaps we can re-think the requirements.

thanks,
steve

----- Original Message -----
From: Philip Clark <bblist@cannae.uklinux.net>
Date: Tuesday, August 22, 2006 2:55 pm
Subject: Re: {bb} bb frequency

> On Mon, 2006-08-21 at 23:32, steve sayler wrote:
> 
> > I'm trying to determine how to change the frequency of tests from
5
> > minutes  to 1 minute.
> >
> > I've searched the archives to find an answer and the closest I can
> > come is http://support.bb4.com/archive/200101/msg01484.html 
> >
> >  "What I think some may be looking for are the BBSLEEP values in
> >   runbb.sh. These control how often to perform the local tests
> >   (bb-local.sh), the network tests (bb-network.sh) and generate
> >   the web pages (bb-display.sh). You can also set the default
> >   interval for external tests there, too."
> >
> >
> > I've changed 300 to 60 in both:
> >   BBSLEEP values in runbb.sh
> >   BBDEFSLEEP in $BBHOME/etc/bbdef.sh
> >
> > but I can't find any variables in bb-local.sh, bb-network.sh, or
> > bb-display.sh to tweak, is there something I'm missing?
> 
> Nope.
> 
> > Or does runbb.sh control everything?
> 
> Yep. But, do you really want to monitor everything and recreate the
> web pages once a minute? There can be unintended consequences to
> this. To quote Sean, this can:
> 
>  * Increase the load on the BBNET/BBDISPLAY machines by a factor 
> of 5
>  * Could page you *every minute* for a problem
>  * Could be too short for the BBNET process to complete all the
>    tests on your network (especially if you're testing 100 devices,
>    if only 3 were down, you'd start getting "bbrun longer than 
> bbsleep"    messages (3 down @ 20 second delay each = 60 seconds).
> 
> Often, it is possible to achieve the kind of responsiveness that you
> need without resorting to this. If you let the list know why the 
> defaultcycle time is not suitable for you, someone might be able to 
> providean alternative solution.
> 
> Cheers, Phil.
> 
> 
> 
> -- 
> Speer's 1st Law of Proofreading: The visibility of an error is
> inversely proportional to the number of times you have looked
> at it.
> 
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