On Mon, Sep 19, 2011 at 8:18 PM, Tobias Oetiker <span dir="ltr"><<a href="mailto:tobi@oetiker.ch" target="_blank">tobi@oetiker.ch</a>></span> wrote:<br><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
> Can someone explain what is happening in this example? I would like to<br><div><div>
> compute a trend along with my data.<br>
><br>
> $ rrdtool create temp.rrd --step 1 DS:temp:GAUGE:30:0:U<br>
> DS:trend:COMPUTE:temp,10,TRENDNAN RRA:AVERAGE:0.5:1:10<br>
> $ rrdtool update temp.rrd N:3<br>
> ERROR: temp.rrd: malformed trend arguments<br>
<br>
</div></div><br>this might be stretching the COMPUTE data source type a bit ...<br>
normally TREND(NAN) is used in CDEF arements of rrd graph. any<br>
particular reason you wand to compute this ahead of presentation?<font color="#888888"><br>
</font></blockquote></div><br>Tobi, I was just experimenting with this feature. Right now I'm using
RRDTool as a backend database for a web service. I'm not going to be using the RRD graphing features. I know I can go back and generate
this data outside of RRD, I just figured I would try to get RRD to do as
much of the work as possible. What are your thoughts?<br>
<br>
- Casey<br>