On 15 March 2010 21:26, Kathy McLeod <kmcl...@us.ibm.com> wrote:
>> There is a flag that can improve performance if the internal
>> indexing matches the SNMP ordering, but it's still probably
>> not the most efficient of the helpers.
>
> Where is the flag and when do I set it?
netsnmp_iterator_info *iinfo = ....;
iinfo->flags |= NETSNMP_ITERATOR_FLAG_SORTED;
>> My best advice is to use a different helper!
>
> For a (larger) table of data that is in the kernel or a database or
> somewhere else external, which helper do you recommend?
Personally, I tend to use the 'table_tdata' helper by preference.
(i.e. mib2c.table_data.conf) - probably in conjunction with the
cache helper.
This can be used to hold a full copy of the table internally
within the agent, and serve incoming requests from that.
Alternatively, it can hold a list of the valid rows in the table
using dummy (empty or semi-empty) data structures,
and pull the actual data from the underlying database/kernel/etc.
There was a fuller description of these fairly recently on
the mailing lists. Try searching the archives.
> My guess is the
> mfd using the cache-handler but not entirely sure.
You could use the MfD framework in this way, yes.
Personally, that wouldn't be my preferred choice,
but it would certainly be possible.
(See Robert - I can play nice!)
Dave
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