[rrd-users] Problem: nan, timestamps ans step

[Lennart Koopmann]

Thank you very much Alex! I think i got a good point to start from now! :)

On Mon, 24 Dec 2007, Alex van den Bogaerdt wrote:

> On Mon, Dec 24, 2007 at 12:59:05PM +0100, Lennart Koopmann wrote:
>
>>
>> On Mon, 24 Dec 2007, Alex van den Bogaerdt wrote:
>>
>>> Try again, but now using a full path name in every command,
>>> or a "cd /var/lib/test/graphs" in front of your script.
>>
>> I only use a script for the update of the RRD. The paths are correct, I
>> checked that.
>
> I used cut and paste from your mail, and made a couple of modifications.
> * I removed paths, so that the database it created and updated in my $cwd
> * I set an end value for the graph command, for easy viewing
>
> The errors are to be expected:
> * update at 1198454571 will fail because it describes *before* 1198454571
>  but the database starts *at* 1198454571
> * "And my script executed this commands:" is an illegal command
> * "Now i try to fetch the data:" is an illegal command
>
> The last interval is not yet known, because there was no update at or
> after $((1198455291+step-1)/step*step))
>
> $ cat doit
> rrdtool create test.rrd --start 1198454571 --step 60 DS:procs:GAUGE:600:0:1000 RRA:AVERAGE:0.5:1:100
>
> And my script executed this commands:
>
> rrdtool update test.rrd 1198454571:257
> rrdtool update test.rrd 1198454631:258
> rrdtool update test.rrd 1198454691:256
> rrdtool update test.rrd 1198454751:255
> rrdtool update test.rrd 1198454811:256
> rrdtool update test.rrd 1198454871:259
> rrdtool update test.rrd 1198454931:258
> rrdtool update test.rrd 1198454991:257
> rrdtool update test.rrd 1198455051:257
> rrdtool update test.rrd 1198455111:255
> rrdtool update test.rrd 1198455171:255
> rrdtool update test.rrd 1198455231:256
> rrdtool update test.rrd 1198455291:256
>
> Now i try to fetch the data:
>
> rrdtool fetch test.rrd --start 1198454571 --end 1198455291 AVERAGE
>
> $ ./doit
> ./doit: line 3: And: command not found
> ERROR: illegal attempt to update using time 1198454571 when last update time is 1198454571 (minimum one second step)
> ./doit: line 19: Now: command not found
>                          procs
>
> 1198454580: 2.5800000000e+02
> 1198454640: 2.5770000000e+02
> 1198454700: 2.5585000000e+02
> 1198454760: 2.5515000000e+02
> 1198454820: 2.5645000000e+02
> 1198454880: 2.5885000000e+02
> 1198454940: 2.5785000000e+02
> 1198455000: 2.5700000000e+02
> 1198455060: 2.5670000000e+02
> 1198455120: 2.5500000000e+02
> 1198455180: 2.5515000000e+02
> 1198455240: 2.5600000000e+02
> 1198455300: nan
>
>
> --
> Alex van den Bogaerdt
> http://www.vandenbogaerdt.nl/rrdtool/
>
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