Re: Max number of Entries...

[Gerrit Thomson <334647@swin.edu.au>]

afaik there is no real limit until you run out of disk space and memory.
An rdn can be very long, so I have found, so the possible values of unique
rdns is very large.

Personally I would make some allowance for browsing type tools and distribute
the objects somewhat. With a 6 digit id such as your test case I would
consider at least one or even two level of distribution splitting on the tail
end of the id so that
uid=123456,ou=test,c=nl
becomes
uid=123456,ou=56,ou=test,c=nl
or
uid=123456,ou=34,ou=56,ou=test,c=nl.

This kind of distribution of items shoudl have no effect on access time to
individual items since they would undoubtably be indexed by uid. Browsing
tools woudl be usable where the maximum item count with the two layer split
become 100 items per ou.

Cheers,
    Gerrit Thomson.

Philip Carley wrote:

> Hello Everyone,
>
> Could anyone tell me if there is a general rule of thumb calculating the
> maximum number of entries in let's say the top level of the organisation.
> For example: so far I have 100,000 entries placed all in the same location
> of the tree (o=test, c=NL)
>
> uid=123456, o=test, c=NL
> uid=123457, o=test, c=NL
> uid=123458, o=test, c=NL
> uid=123459, o=test, c=NL
> etc.etc.etc (x100,000)
>
> I'm hoping to go to 250,000 users, what's the most I can go within o=test,
> c=NL ????????????????
>
> I am running a Compaq DS20, 1GB RAM Unix 4.0D, OpenLDAP 1.2.11
>
> Thanks in advance....
>
> Regards,
>
> Philip Carley.