[rrd-users] RRD Not Storing Historical Gauge Data

[A Darren Dunham]

On Tue, Nov 04, 2008 at 10:09:47AM -0500, William R. Lorenz wrote:
> Hi All,
> 
> I'm trying to create a GAUGE-like RRD, fill it with historical data, and 
> then graph the results.  Unfortunately, my graph simply returns NaNs, with 
> `rrdtool dump <file>` returning the same -- no useful data.  My hope is 
> that someone will spot an obvious flaw and may be able to help with this.
> 
>    rrdtool create host_1.rrd \
>      --start 1225580613 -s 60 \
>      DS:min:GAUGE:120:U:U \
>      DS:avg:GAUGE:120:U:U \
>      DS:max:GAUGE:120:U:U \
>      DS:dev:GAUGE:120:U:U \
>      DS:avl:GAUGE:120:U:U \

So you've set your heartbeat to 120 seconds.

>    rrdtool update host_1.rrd 1225580613:161.429:163.724:167.428:2.055:100
>    rrdtool update host_1.rrd 1225581006:159.928:161.264:163.551:1.513:100
>    rrdtool update host_1.rrd 1225581366:160.575:163.766:165.816:1.926:100
>    rrdtool update host_1.rrd 1225582026:159.407:161.301:163.695:1.926:100
>    rrdtool update host_1.rrd 1225582686:159.901:161.596:164.051:1.879:100
>    rrdtool update host_1.rrd 1225583106:159.436:161.427:164.972:2.233:100

But it appears all of your updates are more than 120 seconds apart. 

-- 
Darren