[rrd-users] Re: distributed rrd files

[BAARDA, Don]

G'day,

> -----Original Message-----
> From:	Alex van den Bogaerdt [SMTP:alex at slot.hollandcasino.nl]
> Sent:	Thursday, May 31, 2001 9:56 AM
> To:	philip at datafoundry.net
> Cc:	rrd-users at list.ee.ethz.ch
> Subject:	[rrd-users] Re: distributed rrd files
> 
> 
> Philip Molter wrote:
> 
> > Let's say I have a setup like this:
> > 
> >   Box 1: RRD files 1-5
> >   Box 2: RRD files 6-10
> >   Box 3: Web server
> > 
> > Let's say I go to Box 3 and request a graph that combines data from RRD
> > file 3 and RRD file 7.
> 
> Have you considered the impact this would have on speed?  Even if we
> forget about locking problems, it takes ages (compared to local access)
> to fetch the data.  Even on very fast networks you suffer from setting
> up a connection.
	[...]
> How important is this feature to you?  Can't you create a setup where
> data that needs to be combined is always on the same box?
	[...]

	I have to agree here. SNMP was designed to efficiently get the data
from what you are monitoring, to where you want to store/process it. If you
want to process the data on one machine, use SNMP to get the data to that
machine. 

	The only reason to collect, compress, and forward the data via
another machine would be if your network topology required it. In this case,
you'd still probably want the RRD's you are processing on the one machine.
There are a variety of ways to achieve this, from collecting, compressing
and forwarding the raw snmp data, through constructing and forwarding the
RRD database itself.

	ABO

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