[rrd-developers] DS idea

[Alex van den Bogaerdt]

----- Original Message ----- 
From: "Tobias Oetiker" <tobi at oetiker.ch>
To: "Alex van den Bogaerdt" <alex at vandenbogaerdt.nl>
Cc: <rrd-developers at lists.oetiker.ch>
Sent: Monday, October 11, 2010 7:43 AM
Subject: Re: [rrd-developers] DS idea


> Hi Alex,
>
> Today Alex van den Bogaerdt wrote:
>
> [...]
>
>> I did nothing more than change step from 300 into 1, and multiplying each
>> steps by 300. Nothing special, nothing complex, just different.
>
> the following scenario:
>
> a single RRD with 2 Data Sources two RRAs one with AVERAGE the
> other with MAX stored at 300 second intervals.
>
> Datasource A is a COUNTER you poll every ~300 seconds.
>
> Datasource B is a GAUGE where you want to store the actual value
> read to the RRD every 300 seconds (without re-sampling).
>
> To avoid jitter you want to use the actual poll time when feeding
> the data to the RRD.
>
> the example you just posted does not address this as far as I can
> see.

That is because in that example, I want MAX, not LAST.