On Tue, Apr 24, 2012 at 08:35:59AM +0100, Dave Shield wrote:
>     [ First - *please* don't mail me privately, without copying
>      any responses to the mailing list.  I don't have the time
>      or inclination to offer private, unpaid, SNMP consultancy.
>      Keep discussions to the list, where others can both learn
>      and offer advice.  Thanks.   ]
 
Noted. Shall I post your response to the list for the next person to
see? I'll be happy to do so but just want to make sure that is OK
with you. I'll include the above so the new next newbie will know that too.
  
> Take a step back (TM),  and think for a moment about what problem
 
Ooh, another (TM). I'll file that away: it's good!
 
> All that the agent is doing is retrieving this value from the
> underlying subsystem,....
> The source of the data would be the underlying subsystem, and it's
> _this_ that is responsible for maintaining it, updating counters, etc.
 
Yup, makes sense. I was trying to keep my extension of the agent
"pure" and have another process feed it data via snmpset, but what
I should have done was to see how the system processes are queried
(cpu usage, etc). I still have to understand how the agent knows
periodically to check them, but using the TASB(TM) principle, it's
obvious that data access by snmpget via MODE_GET simply tells the
agent to get the required information from the subsystem instead of
its local data cache, and return it.  Duh.
 
So, let me know about posting your detailed reply to the list, and
then I'll post this too in case it would be useful to someone.
 
Thanks again!

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