[rrd-users] Inputting older data a la the tutorial

[Alex van den Bogaerdt]

On Sat, Mar 29, 2008 at 01:07:02PM -0400, R Dicaire wrote:
> Hi folks. I'm following the rrdtool tutorial and trying to create an
> rrd that will accept data from older points in time, ie; from ~30 days

It will accept data in other time intervals just fine, as long as
heartbeat is not exceeded.

It will normalize data to fit 86400 seconds.

Accept data: heartbeat
Normalize:   step size
Consolidate: number of steps per entry

> The updates (each update being in increments of 86400 sec):
> 
> rrdtool update chat.rrd 1204180409:833 1204266846:1321 1204353273:1092
> 1204439856:1578 1204526290:1324 1204612705:1277 1204695453:1497

1204695453-1204612705=82748
1204612705-1204526290=86415
1204526290-1204439856=86434
1204439856-1204353273=86583
1204353273-1204266846=86427

Not a single one of those which I checked is 86400 seconds apart
from the other.

Furthermore, only one of them is not more than 86400 seconds.

> 1204243200: nan
> 1204329600: nan
> 1204416000: nan
> 1204502400: nan
> 1204588800: nan
> 1204675200: 1.4970000000e+03
> 1204761600: nan

And only one of the stored rates is known.  This is not a coincidence.

You check the rest.
-- 
Alex van den Bogaerdt
http://www.vandenbogaerdt.nl/rrdtool/