rrd data and graphing

Hello All,

Can someone give me some pointers on

developing my own rrd scripts and graphing.

I've read Hobbit Help pages, looks fairly

straight forward. I can write the script, but

what output should the data be in?

I'm going to write a couple scripts, can

someone give me how the data should look,

and perhaps how the hobbitgraph.cfg should look?

A) I'm going to write a script to track iostat disk busy and wait states for both nfs and disks, and

graph them.

iostat -xn

                extended device statistics

r/s    w/s   kr/s   kw/s wait actv wsvc_t asvc_t  %w  %b device

4.3    2.9  138.3   33.6  0.0  0.1    1.1   19.8   0   2 c1t0d0

4.0    2.9  139.8   33.4  0.0  0.1    1.1   21.1   0   2 c1t1d0

0.0    0.0    0.0    0.0  0.0  0.0    0.0    0.8   0   0 c0t0d0

0.0    0.0    0.0    0.0  0.0  0.0    0.0   20.3   0   0

server2:/home/admin

0.0    0.0    0.0    0.0  0.0  0.0    0.0    6.6   0   0

server2:/home/ms

0.0    0.2    0.4    0.6  0.0  0.0    0.0    3.0   0   0

server1:/home/james

So, for each system, I'd like to graph %w &%b, and I may setup alerts for %w.

How should I sent the data to rrd, the script output format?

B) I'd also like to use the mpstat command. I want to plot the usr,sy,wt,idl

of all processors and graph all processors on a single graph.

CPU minf mjf xcal intr ithr csw icsw migr smtx srw syscl usr sys wt idl

0 132 2 195 57 41 509 17 64 16 0 1260 2 2 1 95

1 172 2 310 378 266 516 16 64 18 0 1619 2 2 1 96

I can write the Hobbit/BB scripts, if someone can recommend the output

format and the hobbitgraph.cfg suggestion, it would be helpful.

If anyone wants a copy of the script(s) afterward, I'm more than happy to

provide.

Thanks..James