[Xymon] RRD Files Growing Large

[Dave "doughnut" Fogarty]

That seems pretty bug to me.  Mine are all under a meg.

When you run 'rrdtool info somebigfile.rrd' does it have a lot of different
data-sources ("ds")?  Mine tend to directly correlate.

Here's some output from looking at a couple average rrd files for me.

$ ls -l la.rrd vmstat.rrd
-rw-r--r-- 1 xymon xymon  19640 Jan 29 14:09 la.rrd
-rw-r--r-- 1 xymon xymon 323384 Jan 29 14:24 vmstat.rrd
$ rrdtool info vmstat.rrd | less
$ rrdtool info la.rrd | less
$ rrdtool info la.rrd | fgrep 'index = '
ds[la].index = 0
$ rrdtool info vmstat.rrd | fgrep 'index = '
ds[cpu_r].index = 0
ds[cpu_b].index = 1
ds[cpu_w].index = 2
ds[mem_swpd].index = 3
ds[mem_free].index = 4
ds[mem_buff].index = 5
ds[mem_cach].index = 6
ds[mem_si].index = 7
ds[mem_so].index = 8
ds[dsk_bi].index = 9
ds[dsk_bo].index = 10
ds[cpu_int].index = 11
ds[cpu_csw].index = 12
ds[cpu_usr].index = 13
ds[cpu_sys].index = 14
ds[cpu_idl].index = 15
ds[cpu_wait].index = 16
$ rrdtool dump la.rrd | wc
    2399   18567  195686
$ rrdtool dump vmstat.rrd | wc
    2991   19271 1030655