[rrd-users] Re: Disk Usage per SNMP?

[Hugo van der Kooij]

On Mon, 7 Apr 2003, Alex van den Bogaerdt wrote:

> On Sun, Apr 06, 2003 at 10:01:44PM +0200, Hugo van der Kooij wrote:
> 
> absolute: rate = (current_value)/(this_time - last_time)
> gauge:    rate = current_rate

Got it covered. The data is now present and works fine.

> > In the long run I would like to use a three color approach. (green for < 
> > 80%; orange for 80-95%; red for > 95%)
> 
> Sure.  But for now concentrate on the basis.

Now the object is to make a CDEF string to return the following formula:

if ( 0.8 < (used/size) <= 0.95 ) {
	used+units
} else {
	0
)

I settled for:

        CDEF:normal=used,size,/,$BUSY,LT,used,units,*,0,IF      \
        CDEF:temp=used,size,/,$BUSY,GT,used,0,IF                        \
        CDEF:busy=used,size,/,$FULL,LT,temp,units,*,0,IF                \
        CDEF:full=used,size,/,$FULL,GT,used,units,*,0,IF                \

Where:
BUSY=0.8
FULL=0.95

Thanks for pointing out the oversight. (Can't be a guru in everything ;-)

Hugo.

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