[rrd-users] Re: rrd fetch command - unexpected output

Serge Maandag serge.maandag at staff.zeelandnet.nl
Fri Feb 4 10:43:05 MET 2005

> 1) [root at neogeo bin]# ./rrdtool fetch default.rrd AVERAGE | wc -l
>     292
> I suppose this is 24 HRS worth of records. But where does the extra 4
> records comes in? I thought at most it would be 288 + 1

use "less" instead of "wc -l" and lok at the output. There's probably
a header and stuff.

> Also, I tried doing an update:
> [root at neogeo bin]# ./rrdtool update default.rrd N:1234:4388
> [root at neogeo bin]# ./rrdtool fetch default.rrd AVERAGE
> but I cannot find the 2 values inside the RRD. I tried 

Rrdtool interpolates, so you'll need to update multiple consecutive 
values before you see values in your rrd database.


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