[rrd-users] Re: distributed rrd files

[Alex van den Bogaerdt]

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.

I'm not sure how this would have to be setup.  Perhaps each box would
need a RRD server to process requests locally (thereby avoiding the
long file locking).  The resulting data can be sent over to the client
for further processing.  Consolidation would have to be done on the
client side, unless the server is told in which resolution the data
needs to be.  As this can only be calculated after all available
resolutions are known to the client, this would IMHO be hard to do.

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?

cheers,
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