[smokeping-users] Smoke cut-off problem back in 2.4.0?

Tobias Oetiker tobi at oetiker.ch
Thu Jun 12 15:30:23 CEST 2008

Hi Ged,

> However, short of painstakingly examining the high-resolution graphs
> minute-by-minute I do not see how Smokeping will alert me to transient
> short duration events.  These may be symptoms of some unknown problem
> which appeared while I was away on holiday: It's 8am on Monday morning
> and there's a great big heap of paper in my 'IN' tray.  An ugly crowd
> of disgruntled computer users is gathering at the door to the IT dep't
> offices, and I'd like to take a quick look at what's been going on in
> the LAN for the past month before I unlock it - so that I don't appear
> to be quite so clueless as is in fact the case.

> Networks can be a bit like combat - long periods of nothing happening
> punctuated by moments of sheer terror.  The 'nothing happening' bits
> establish reference points but little else, and can be characterized
> with little storage (or screen) capacity.  The punctuations are more
> interesting, and will require more resources.  At the moment these
> punctuations tend to be masked.  In your words:

for this I setup the smokeping alarm facility so that it sends me
mail when it drops packets, sees a sharp rise in rtt or some such

a second bit you can do, is add a MAX rra, this will preserve any
spike ...


> > Date: Sat, 26 Apr 2008 14:49:38 +0200 (CEST)
> > From: Tobias Oetiker <tobi at oetiker.ch>
> > To: G.W. Haywood <ged at jubileegroup.co.uk>
> > In-Reply-To: <Pine.LNX.4.58.0804261259001.18067 at mail3.jubileegroup.co.uk>
> > Cc: smokeping-users at lists.oetiker.ch
> > Subject: Re: [smokeping-users] Graph scale problem
> >
> > [snip] the net result is, that the spike becomes lower as it gets
> > distributed across time [snip]
> That's the bit that bothers me.
> I think I've banged on this drum enough now. :)
> --
> 73,
> Ged.

Tobi Oetiker, OETIKER+PARTNER AG, Aarweg 15 CH-4600 Olten
http://it.oetiker.ch tobi at oetiker.ch ++41 62 213 9902

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