On 7/17/06, William Yardley <[EMAIL PROTECTED]> wrote: > Sorry for not noticing that one. This message doesn't explain how to > aggregate data from different files to a single line, however. > > For instance, let's say I'm graphing average and max power consumption > (for 5 minute periods) from a bunch of power strips. How would I go > about creating a graph with the sum of all power strips?
If using the RRD files that are created via MRTG then use as follows Load up the rra files DEF:rra1a=/usr/local/rrdtool/file1.rrd:ds0:AVERAGE \ DEF:rra1b=/usr/local/rrdtool/file1.rrd:ds1:AVERAGE \ DEF:rra2a=/usr/local/rrdtool/file2.rrd:ds0:AVERAGE \ DEF:rra2b=/usr/local/rrdtool/file2.rrd:ds1:AVERAGE \ Add them together in your case CDEF:rra1s:rra1a,rra2a,+ \ CDEF:rra2s:rra2a,rra2a,+ \ Then print the CDEF values. If you have a pretty nicely organized MRTG install it'll probably be much easier to use routers2.cgi and the user defined graph. I use this to create a sum of 4,000+ interfaces (but it does take quite some time to build). Paul -- Unsubscribe mailto:[EMAIL PROTECTED] Help mailto:[EMAIL PROTECTED] Archive http://lists.ee.ethz.ch/rrd-users WebAdmin http://lists.ee.ethz.ch/lsg2.cgi
