Increasing value, show diff

Helmut Schneider · Cacti User Joined: 05 Feb 2007 Posts: 57

Hi,

I have a value which increases steadily (passed/blocked connections on a gateway).

Is there a function which only displays/graphs the delta from the previous value?

Thanks, Helmut

gandalf · Posted: Mon Jan 28, 2008 10:18 am Post subject:

Sure. It's only using standard RRDTool ds-type of COUNTER instead of GAUGE, that's all. Have a read e.g. at the first link of my signature, scroll to the RRDTool chapter
Reinhard

Helmut Schneider · Cacti User Joined: 05 Feb 2007 Posts: 57

BTDT. Probably I forgot to recreate the RRDs. Works now. Thanks.

gandalf · Posted: Tue Jan 29, 2008 11:17 am Post subject:

If changing ds-type of a Data Template after rrd files has been created, you will have to rrdtool tune -d <ds-name>:COUNTER manually
Reinhard

Helmut Schneider · Cacti User Joined: 05 Feb 2007 Posts: 57

Good to know, thanks.

k-y · Joined: 27 Oct 2008 Posts: 1 Location: Redmond, WA

When changing from GAUGE to COUNTER manually, can we keep the existing RRD files or should we delete and recreate?

gandalf · Posted: Fri Nov 14, 2008 4:44 pm Post subject:

There's no NEED to drop them. You may rrdtool tune to change. But obviously the data is wrong. So my recommendation is to drop the old rrd files
Reinhard