Re: 2 SNMP Values

> -----Original Message-----
> From: [email protected] [mailto:cricket-
> [email protected]] On Behalf Of Sean Whitney
> Sent: Wednesday, July 30, 2008 1:04 PM
> To: Cricket List
> Subject: [cricket-users] 2 SNMP Values
> 
> I have 2 values that I need to graph.
> 
> Total Memory and Free Memory are both available as SNMP values.
>
> But I really don't want "Free Memory"  I want "Used Memory" which is
> Total Memory - Free Memory.
> 
> Is there a way to do this programmatically within the cricket
> structure, or do I need to write a separate collection script to
> return Total Memory and Used Memory

W\Outy of curiosity, what kind of system is it?  Both Windows and Linux
reports memory in SNMP as used not free:

OID StorageDescr      1.3.6.1.2.1.25.2.3.1.3
OID StorageAllocUnits 1.3.6.1.2.1.25.2.3.1.4
OID StorageSize       1.3.6.1.2.1.25.2.3.1.5
OID StorageUsed       1.3.6.1.2.1.25.2.3.1.6

In any case, you can try something like:

# ds0
datasource totalram
  ds-source     = snmp://%snmp%/<OID>.%inst%
  rrd-ds-type   = GAUGE

# ds1
datasource freeram
  ds-source     = snmp://%snmp%/<OID>.%inst%
  rrd-ds-type   = GAUGE

# ds2
datasource usedram
  rrd-ds-type   = COMPUTE
  rrd-cdef      = ds0,ds1,-

--
Stephen Carville <[email protected]>
Systems Engineer
Land America
1.626.667.1450 X1326
#####################################################################
That which does not kill us often hurts us a lot.


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