Re: How are the 95th values generated for Cacti? Are they wrong?

James Bensley <[email protected]>
Newsgroups gmane.network.cacti.user
Message-ID <CAAWx_pVy27pLiazDTckOru2=3OO40heTFUfQAbJGu1UMtyfLBw@mail.gmail.com>
Hi Florian,

Thanks for your reply, I read you post the other day, good spot!

Yeah I found that page, was going to email the list this morning to
say I have solved all my problems now. I can see that the variable
|95:bits:0:max:2| is set by the grapth template.

Many thanks :)
James.

On 2 November 2012 08:45, Florian Roscher <[email protected]> wrote:
> On Wed, 31 Oct 2012 15:51:07 +0000
> James Bensley <[email protected]> wrote:
>
>> I am trying to run rrdtool manually to generate a 95th percentile value
>> from an rrd file via the CLI, but I can't get the same results.
>
>> [..]
>
>> In the screenshot below I am using the Cacti web interface to view a graph
>> based on the same rrd file, for the same date and time period, but it has a
>> different 95th percentile value. It says 95th percentile = 9.6Mbps (this
>
> Cacti is able to calculate different types of percentile.
> Well, it might be better to say: It is able to calculate the
> percentile based on different values.
>
> The type is selected within your graph definition/template.
> See i.e. http://www.cacti.net/downloads/docs/html/variables.html#GRAPH_VARIABLES,
> search for heading 'Nth Percentile'.
>
>
> And as a side note: 'all_max_peak' is calculated wrong as far as I understand
> this. See my mail <[email protected]>, i.e. here:
> http://sourceforge.net/mailarchive/forum.php?thread_name=20121025163016.1c8062d3%40marvin.ham.ws.mcs.de&forum_name=cacti-user
>
>
> Regards
> Florian
>
>
> --
>   Florian Roscher                          private: [email protected]
>                                             Debian: [email protected]
> PGP Key / ID: 1024D/B4071A65
> Fingerprint : F9AB 00C1 3E3A 8125 DD3F  DF1C DF79 A374 B407 1A65

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