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Channel: Zenoss Community: Message List - Guage RRD Behavior
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Re: Guage RRD Behavior

Steve: Looks like a normalization issue. RRD picks the timestamps of the intervals for you using your supplied stepsize but uses its timestamps. This means that if samples are every 10 seconds and...

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Re: Guage RRD Behavior

Steve: "You can cause the normalisation to be a null operator by ensuring that you update on every step boundary - not a second early or late - and do no consolidation. " "Don't expect values.  Expect...

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Re: Guage RRD Behavior

http://www.vandenbogaerdt.nl/rrdtool/process.php Ok normalization is explained in the link above. Too bad there was no mention of this at all in the oiteker docs. GAUGE is set up for actual rates such...

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Re: Guage RRD Behavior

Steve: Sorry I don't have a better answer for you.

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Re: Guage RRD Behavior

Nope. Normalization is the answer I was looking for. The solution is fudge the check 1->2 is always 1.6, 2->1 is always 1.3 so we just weigh the value against 1.5 instead of ==1 or ==2. The take...

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Re: Guage RRD Behavior

Steve: Thats pretty much the case.

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Re: Guage RRD Behavior

From : http://oss.oetiker.ch/rrdtool/tut/rrdtutorial.en.html [quote]One important feature of RRDtool has not been explained yet: it is virtually impossible to collect data and feed it into RRDtool on...

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Re: Guage RRD Behavior

I think in this case, (depending on other factors certainly), I might consider not using zenperfsnmp to gather the data - i.e. for a binary value with 2 or 3 possible states, and/or you don't need to...

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Re: Guage RRD Behavior

Nillie: Yes, normalization. Steve: Maybe write a daemon that uses the twisted framework to perform the snmp tasks and update statuses/create events rather than storing the data.

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Re: Guage RRD Behavior

And how do you know the interface status before you receive one of these traps ? On my networks I have interfaces with more than 400 days of uptime and I suspect I'll have to wait some more before I...

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