[hobbit] number of datasources in RRD's created by NCV

[Trent Melcher]

On Fri, 2007-10-26 at 10:18 +0200, Dennis Ortsen wrote:
> Hi all,
> 
> I've added a custom test to a host that sends (performance)
> information about the mysql daemon that's running on it.
> 
> The data on the status page of that mysql test looks like this:
> 
> threads : 53
> queries per sec : 386
> slow queries : 0
> 
> All values are absolute (GAUGE) so I added this NCV tag in hobbitserver.cfg:
> 
> NCV_mysql="threads:GAUGE,queriespersec:GAUGE,slowqueries:GAUGE"
> 
> I also added "mysql=ncv" to the TEST2RRD list in hobbitserver.cfg I
> kicked the hobbit daemons so the hobbitserver.cfg file would be read
> again. The RRD file is created on the hobbit server after the client
> has sent its data. When I check with `rrdtool dump mysql.rrd` I only
> see the first two datasources (threads and queriespersec). The
> third/last datasource isn't created/updated in the RRD file, although
> you'd expect that according to the NCV_mysql tag in hobbitserver.cfg.
> 
> Is there a limitation in the maximum number of datasources the NCV
> graphing can handle?

No limitation that I know of.....

Did you happen to add the slowqueries value after the mysql.rrd was
alreay created with the first 2?  If so you may need to delete the rrd
file and let it recreate it.

Trent

> 
> I'm running hobbit 4.2.0 on both client and server BTW.
> 
> Thanks in advance,
> 
> Br.
> 
> Dennis
> 
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