Re: [munin-users] aggregate graphs (invalid rpn expression in: az1_0, UN, 0, az1_0, IF, , +)

[Tom <to...@li...>]

On 02/25/2011 10:33 AM, Steve Schnepp wrote:
> On Fri, Feb 25, 2011 at 05:09, Tom <to...@li...
> <mailto:to...@li...>> wrote:
>
>     I am trying to achieve a aggregate SUM graph of up/down for if_eth0
>     service
>
>
> As far as I know, aggregates don't currently work with negative graphs,
> sorry..
> http://munin-monitoring.org/ticket/50

Ah ok.

I notice that the actual values in the rrd file are COUNTER types and 
take positive values even for the "down" value, so I am surprised that 
it has a problem there.


-bash-3.2$ rrdtool dump 
/var/lib/munin/hpl.hp.com/cirrusj1605.hpl.com-if_eth0-down-c.rrd
<!-- Round Robin Database Dump --><rrd>	<version> 0003 </version>
	<step> 300 </step> <!-- Seconds -->
	<lastupdate> 1298631906 </lastupdate> <!-- 2011-02-25 03:05:06 PST -->

	<ds>
		<name> 42 </name>
		<type> COUNTER </type>
		<minimal_heartbeat> 600 </minimal_heartbeat>
		<min> NaN </min>
		<max> NaN </max>

		<!-- PDP Status -->
		<last_ds> 15353324520 </last_ds>
		<value> 1.5275840104e+04 </value>
		<unknown_sec> 0 </unknown_sec>
	</ds>

<!-- Round Robin Archives -->	<rra>
		<cf> AVERAGE </cf>
		<pdp_per_row> 1 </pdp_per_row> <!-- 300 seconds -->

		<params>
		<xff> 5.0000000000e-01 </xff>
		</params>
		<cdp_prep>
			<ds>
			<primary_value> 2.4047021753e+03 </primary_value>
			<secondary_value> NaN </secondary_value>
			<value> NaN </value>
			<unknown_datapoints> 0 </unknown_datapoints>
			</ds>
		</cdp_prep>
		<database>
			<!-- 2011-02-23 03:10:00 PST / 1298459400 --> <row><v> 
2.2452146999e+03 </v></row>
			<!-- 2011-02-23 03:15:00 PST / 1298459700 --> <row><v> 
2.2317975192e+03 </v></row>
			<!-- 2011-02-23 03:20:00 PST / 1298460000 --> <row><v> 
2.2088592731e+03 </v></row>
			<!-- 2011-02-23 03:25:00 PST / 1298460300 --> <row><v> 
2.1930848105e+03 </v></row>